CN110354670A - A kind of boiler with tailed flue gas takes off white system and method - Google Patents
A kind of boiler with tailed flue gas takes off white system and method Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
Description
技术领域technical field
本发明涉及炭黑生产过程中锅炉烟气的处理技术，具体涉及炭黑尾气锅炉烟气脱白系统和炭黑尾气锅炉烟气脱白方法。The invention relates to a boiler flue gas treatment technology in the carbon black production process, in particular to a carbon black tail gas boiler flue gas de-whitening system and a carbon black tail gas boiler flue gas de-whitening method.
背景技术Background technique
炭黑生产过程中产生的尾气含有一定的可燃气体(比如CO、H2、CH4、CmHn)，热值偏低，约650Kcal/Nm3。炭黑尾气含水率较高，根据炭黑生产品种的不同而含水不同，约在30％～40％(体积比)左右。炭黑尾气可以用作锅炉燃料，炭黑尾气中的氢气燃烧后生成水，造成炭黑尾气锅炉烟气(简称烟气)的含水量较大，约35％左右(体积比)；此时的烟气通常是饱和湿烟气，烟气中含有大量水蒸气，水蒸气中含有较多的溶解性盐、SOX(SOx表示硫的氧化物，例如SO2、SO3)、凝胶粉尘、微尘等(都是雾霾的主要成分)。如果烟气由烟囱直接排出，进入温度较低的环境空气中，由于环境空气的饱和湿度比较低，在烟气温度降低过程中，烟气中的水蒸气会凝结形成湿烟羽。The tail gas produced in the carbon black production process contains certain combustible gases (such as CO, H 2 , CH 4 , C m H n ), and the calorific value is low, about 650Kcal/Nm 3 . The water content of carbon black tail gas is relatively high, and the water content is different according to the different types of carbon black production, about 30% to 40% (volume ratio). Carbon black tail gas can be used as boiler fuel, and the hydrogen in the carbon black tail gas burns to generate water, causing the water content of carbon black tail gas boiler flue gas (abbreviation flue gas) to be relatively large, about 35% (volume ratio); The flue gas is usually saturated wet flue gas, which contains a large amount of water vapor, and the water vapor contains more soluble salts, SO x (SO x represents sulfur oxides, such as SO 2 , SO 3 ), gel dust , fine dust, etc. (all are the main components of smog). If the flue gas is directly discharged from the chimney and enters the ambient air with a lower temperature, since the saturated humidity of the ambient air is relatively low, the water vapor in the flue gas will condense to form a wet plume during the temperature reduction of the flue gas.
随着国家环保治理力度的加大，对锅炉燃烧后的烟气不但需要进行脱硫、脱硝、粉尘处理，还需要进行烟羽治理，即烟气脱白或烟气消白。烟气消白不但能够消除烟气中的氮氧化物、硫化物、各种烟尘颗粒物、气溶胶、各种结晶盐颗粒物质，减少这些有害物质排放到大气中，污染环境；还会将烟气中的水蒸气收集，进行处理后重新使用；节约了水资源，减少了企业的运行成本。目前烟气消白工艺采用在脱硫塔后设计换热器冷凝烟气，使烟气中水蒸气冷凝，降低烟气的含水量。对烟气中含水量较少的排放烟气此工艺较合适，对于由炭黑尾气产生的含水量很高的烟气来说，采用换热器冷凝降低烟气含水达到消白目的，会加大运行成本和投资成本，而且建设场地的面积较大，对200000Nm3/小时的炭黑尾气锅炉烟气消白，采用换热器冷凝烟气工艺，经计算：换热器的冷却水量可达4000吨/小时，运行电耗可达800Kw·h/h，换热器的面积约12000m2，冷却塔的建设面积也有1200m2，同时烟气冷凝的热能也白白排放，造成巨大的浪费。With the strengthening of national environmental protection control, not only desulfurization, denitrification, and dust treatment are required for the flue gas after boiler combustion, but also plume treatment, that is, flue gas dewhitening or flue gas whitening. Flue gas whitening can not only eliminate nitrogen oxides, sulfides, various soot particles, aerosols, and various crystalline salt particles in the flue gas, reduce the emission of these harmful substances into the atmosphere and pollute the environment; The water vapor in the system is collected and reused after treatment; it saves water resources and reduces the operating cost of the enterprise. At present, the flue gas whitening process adopts the design of a heat exchanger after the desulfurization tower to condense the flue gas, so that the water vapor in the flue gas can be condensed and the water content of the flue gas can be reduced. This process is more suitable for flue gas with low water content in flue gas. For flue gas with high water content produced by carbon black tail gas, using heat exchanger to condense to reduce the water content of flue gas to achieve the purpose of whitening will increase Large operating cost and investment cost, and the area of the construction site is relatively large. For the whitening of the flue gas of the 200,000Nm 3 /hour carbon black tail gas boiler, the heat exchanger is used to condense the flue gas. After calculation: the cooling water of the heat exchanger can reach 4000 tons/hour, the operating power consumption can reach 800Kw·h/h, the area of the heat exchanger is about 12000m 2 , the construction area of the cooling tower is also 1200m 2 , and the heat energy of the flue gas condensation is also discharged in vain, causing huge waste.
发明内容Contents of the invention
针对背景技术中提到的技术问题，本发明提供一种炭黑尾气锅炉烟气脱白系统和方法。Aiming at the technical problems mentioned in the background art, the present invention provides a carbon black tail gas boiler flue gas dewhitening system and method.
本发明提供的一种炭黑尾气锅炉烟气脱白系统，包括引风机、烟气冷却器、脱硫塔、湿电除尘器、直喷冷却塔、烟气升温器、水-空气换热器、循环冷却塔和烟囱，炭黑尾气锅炉的烟气出口连接引风机的进口，引风机的出口连接烟气冷却器的烟气进口，烟气冷却器的烟气出口连接脱硫塔的烟气进口，脱硫塔的烟气出口连接湿电除尘器的烟气进口，湿电除尘器的烟气出口连接直喷冷却塔的烟气进口，直喷冷却塔的烟气出口连接烟气升温器的烟气进口，烟气升温器的烟气出口连接烟囱的进口；烟气冷却器的换热介质出口连接烟气升温器的换热介质进口，烟气升温器的换热介质出口连接烟气冷却器的换热介质进口；直喷冷却塔的出水口连接水-空气换热器的进水口，水-空气换热器的出水口连接循环冷却塔的进水口，循环冷却塔的出水口连接直喷冷却塔的进水口。A carbon black tail gas boiler flue gas dewhitening system provided by the present invention includes an induced draft fan, a flue gas cooler, a desulfurization tower, a wet electrostatic precipitator, a direct injection cooling tower, a flue gas warmer, a water-air heat exchanger, Circulating cooling tower and chimney, the flue gas outlet of the carbon black tail gas boiler is connected to the inlet of the induced draft fan, the outlet of the induced draft fan is connected to the flue gas inlet of the flue gas cooler, the flue gas outlet of the flue gas cooler is connected to the flue gas inlet of the desulfurization tower, The flue gas outlet of the desulfurization tower is connected to the flue gas inlet of the wet electrostatic precipitator, the flue gas outlet of the wet electrostatic precipitator is connected to the flue gas inlet of the direct injection cooling tower, and the flue gas outlet of the direct injection cooling tower is connected to the flue gas of the flue gas warmer The inlet, the flue gas outlet of the flue gas warmer is connected to the inlet of the chimney; the heat exchange medium outlet of the flue gas cooler is connected to the heat exchange medium inlet of the flue gas warmer, and the heat exchange medium outlet of the flue gas warmer is connected to the flue gas cooler Heat exchange medium inlet; the water outlet of the direct injection cooling tower is connected to the water inlet of the water-air heat exchanger, the water outlet of the water-air heat exchanger is connected to the water inlet of the circulating cooling tower, and the water outlet of the circulating cooling tower is connected to the direct injection cooling water inlet of the tower.
其中，引风机用于将烟气引入烟气冷却器，在烟气冷却器中，烟气与温度较低的换热介质进行热交换，使得烟气的温度下降。降温的烟气随后进入脱硫塔，在脱硫塔中脱去烟气中的SOX。烟气随后进入湿电除尘器，在湿电除尘器中除去烟气中的颗粒物。之后，烟气进入直喷冷却塔，与直喷冷却塔喷出的低温雾化喷淋水接触，烟气温度继续下降使得烟气中的水蒸气冷凝析出。烟气随后进入烟气升温器，烟气升温器用于提升烟气的温度，并且降低换热介质的温度。最后，烟气进入烟囱，从烟囱排出，此时烟气中的水蒸气含量和颗粒物含量都极少，不会形成湿烟羽，即达到了烟气脱白的目的。在烟气冷却器中，温度较低的换热介质吸收了烟气的热量而升温；在烟气升温器中，温度较高的换热介质放出热量而降温，并使得烟气升温。在直喷冷却塔中，烟气降温并析出水；析出的水和雾化喷淋水一起进入水-空气换热器，水降温而空气升温；随后水进入循环冷却塔进一步降温，烟气中冷凝而析出的水可以从循环冷却塔排出或作为生产用水。Among them, the induced draft fan is used to introduce the flue gas into the flue gas cooler, and in the flue gas cooler, the flue gas exchanges heat with the heat exchange medium with a lower temperature, so that the temperature of the flue gas drops. The cooled flue gas then enters the desulfurization tower, where the SO X in the flue gas is removed. The flue gas then enters a wet electrostatic precipitator where particulate matter is removed from the flue gas. After that, the flue gas enters the direct-injection cooling tower and contacts with the low-temperature atomized spray water from the direct-injection cooling tower. The temperature of the flue gas continues to drop, causing the water vapor in the flue gas to condense and precipitate. The flue gas then enters the flue gas warmer, which is used to raise the temperature of the flue gas and lower the temperature of the heat exchange medium. Finally, the flue gas enters the chimney and is discharged from the chimney. At this time, the content of water vapor and particulate matter in the flue gas is very small, and no wet plume will be formed, that is, the purpose of whitening the flue gas is achieved. In the flue gas cooler, the heat exchange medium with a lower temperature absorbs the heat of the flue gas and heats up; in the flue gas warmer, the heat exchange medium with a higher temperature releases heat to cool down and heat up the flue gas. In the direct injection cooling tower, the flue gas cools down and precipitates water; the precipitated water enters the water-air heat exchanger together with the atomized spray water, and the water cools down while the air heats up; then the water enters the circulating cooling tower for further cooling, and the flue gas The condensed and precipitated water can be discharged from the circulating cooling tower or used as production water.
进一步地，还包括除铁过滤器，循环冷却塔出口与除铁过滤器的进口连接，由循环冷却塔出水口排出的水经过除铁过滤器去除水中的含铁杂质，使水更加洁净。Further, it also includes an iron removal filter, the outlet of the circulating cooling tower is connected to the inlet of the iron removal filter, and the water discharged from the outlet of the circulating cooling tower passes through the iron removal filter to remove iron-containing impurities in the water, making the water cleaner.
本发明提供的一种炭黑尾气锅炉烟气脱白方法，包括以下步骤：A kind of carbon black tail gas boiler flue gas whitening method provided by the invention comprises the following steps:
(1)将烟气引入烟气冷却器中，使烟气与温度较低的换热介质进行热交换，烟气温度下降至120～140℃；(1) The flue gas is introduced into the flue gas cooler to exchange heat between the flue gas and the heat exchange medium with a lower temperature, and the temperature of the flue gas drops to 120-140°C;
(2)将烟气引入脱硫塔中，脱除烟气中的SOx(SOx表示硫的氧化物，例如SO2、SO3)；(2) Introduce the flue gas into the desulfurization tower to remove SO x in the flue gas (SO x means sulfur oxides, such as SO 2 , SO 3 );
(3)将烟气引入湿电除尘器中，除去烟气中颗粒物；(3) The flue gas is introduced into the wet electrostatic precipitator to remove particulate matter in the flue gas;
(4)将烟气引入直喷冷却塔中，使烟气与雾化喷淋水进行热交换，烟气温度下降至45～50℃，烟气中的水蒸气冷凝析出；(4) The flue gas is introduced into the direct-injection cooling tower to exchange heat between the flue gas and the atomized spray water, the temperature of the flue gas drops to 45-50°C, and the water vapor in the flue gas condenses and precipitates;
(5)将烟气引入烟气升温器中，使烟气与温度较高的换热介质进行热交换，烟气温度上升至75～80℃；(5) Introduce the flue gas into the flue gas warmer to exchange heat between the flue gas and the heat exchange medium with a higher temperature, and the temperature of the flue gas rises to 75-80°C;
(6)将烟气引入烟囱，烟气从烟囱排出。(6) The flue gas is introduced into the chimney, and the flue gas is discharged from the chimney.
进一步地，步骤(1)和步骤(5)中的换热介质为水。因水比热较大，吸热放热能力较强，所以选用水为换热介质。0.1MPa下水的沸点约为100℃，0.5MPa下水的沸点约为150℃。Further, the heat exchange medium in step (1) and step (5) is water. Because water has a large specific heat and strong heat absorption and heat release ability, water is selected as the heat exchange medium. The boiling point of water at 0.1MPa is about 100°C, and the boiling point of water at 0.5MPa is about 150°C.
本发明的有益效果：本发明通过逐级降温的方式，使炭黑尾气锅炉烟气既满足脱硫工艺的要求，又使得烟气中的水蒸气大部分冷凝析出，达到烟气脱白的目的；通过合理设置换热介质，使热交换顺利进行，不需要消耗太多新增能量；在烟气脱白过程中，对烟气进行净化处理，有利于保护环境。Beneficial effects of the present invention: the present invention enables the carbon black tail gas boiler flue gas to meet the requirements of the desulfurization process through a step-by-step cooling method, and makes most of the water vapor in the flue gas condense and precipitate, thereby achieving the purpose of flue gas dewhitening; By reasonably setting the heat exchange medium, the heat exchange can be carried out smoothly without consuming too much new energy; in the process of flue gas dewhitening, the flue gas is purified, which is conducive to protecting the environment.
附图说明Description of drawings
图1为本发明的一种炭黑尾气锅炉烟气脱白系统的示意图。Fig. 1 is a schematic diagram of a carbon black tail gas boiler flue gas de-whitening system of the present invention.
图2为直喷冷却塔的结构示意图。Figure 2 is a schematic diagram of the structure of a direct injection cooling tower.
附图标记解释：1.引风机，2.烟气冷却器，3.脱硫塔，4.湿电除尘器，5.直喷冷却塔，6.烟气升温器，7.水-空气换热器，8.循环冷却塔，9.烟囱，10.除铁过滤器。Explanation of reference signs: 1. induced draft fan, 2. flue gas cooler, 3. desulfurization tower, 4. wet electrostatic precipitator, 5. direct injection cooling tower, 6. flue gas warmer, 7. water-air heat exchange Device, 8. Circulating cooling tower, 9. Chimney, 10. Iron removal filter.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明做进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
如图1和2所示，本发明的一种炭黑尾气锅炉烟气脱白系统，用于对炭黑尾气锅炉产生的烟气进行脱白，它包括引风机1、烟气冷却器2、脱硫塔3、湿电除尘器4、直喷冷却塔5、烟气升温器6、水-空气换热器7、循环冷却塔8、烟囱9和除铁过滤器10。As shown in Figures 1 and 2, a kind of carbon black tail gas boiler flue gas dewhitening system of the present invention is used for dewhitening the flue gas that carbon black tail gas boiler produces, and it comprises induced draft fan 1, flue gas cooler 2, Desulfurization tower 3, wet electrostatic precipitator 4, direct injection cooling tower 5, flue gas warmer 6, water-air heat exchanger 7, circulating cooling tower 8, chimney 9 and iron removal filter 10.
引风机1的进口与炭黑尾气锅炉的烟气出口通过管道连接，引风机1的出口与烟气冷却器2的烟气进口通过管道连接。引风机1用于抽吸烟气，加压并输送烟气至烟气冷却器2中。The inlet of the induced draft fan 1 is connected with the flue gas outlet of the carbon black tail gas boiler through a pipeline, and the outlet of the induced draft fan 1 is connected with the flue gas inlet of the flue gas cooler 2 through a pipeline. The induced draft fan 1 is used to extract the flue gas, pressurize and deliver the flue gas to the flue gas cooler 2 .
烟气冷却器2和烟气升温器6均为热交换器，均包含烟气通道和换热介质通道。烟气冷却器2的烟气进口与引风机1的出口通过管道连接，烟气冷却器2的烟气出口与脱硫塔3的烟气进口通过管道连接。烟气冷却器2的换热介质出口与烟气升温器6的换热介质进口通过管道连接，烟气冷却器2的换热介质进口与烟气升温器6的换热介质出口通过管道连接。烟气冷却器2用于冷却烟气，烟气与温度较低的换热介质进行热交换，使烟气降温而换热介质升温。Both the flue gas cooler 2 and the flue gas warmer 6 are heat exchangers, both of which include flue gas channels and heat exchange medium channels. The flue gas inlet of the flue gas cooler 2 is connected to the outlet of the induced draft fan 1 through a pipe, and the flue gas outlet of the flue gas cooler 2 is connected to the flue gas inlet of the desulfurization tower 3 through a pipe. The heat exchange medium outlet of the flue gas cooler 2 is connected to the heat exchange medium inlet of the flue gas warmer 6 through pipes, and the heat exchange medium inlet of the flue gas cooler 2 is connected to the heat exchange medium outlet of the flue gas warmer 6 through pipes. The flue gas cooler 2 is used to cool the flue gas, and the flue gas exchanges heat with the heat exchange medium with a lower temperature, so that the temperature of the flue gas is lowered while the heat exchange medium is heated up.
脱硫塔3的烟气进口与烟气冷却器2的烟气出口通过管道连接，脱硫塔3的烟气出口与湿电除尘器4的烟气进口连接。脱硫塔3为湿法脱硫塔，用于脱去烟气中的SOx，使烟气中的SOx含量达到排放标准。The flue gas inlet of the desulfurization tower 3 is connected to the flue gas outlet of the flue gas cooler 2 through pipes, and the flue gas outlet of the desulfurization tower 3 is connected to the flue gas inlet of the wet electrostatic precipitator 4 . The desulfurization tower 3 is a wet desulfurization tower, which is used to remove SO x in the flue gas, so that the SO x content in the flue gas can reach the emission standard.
湿电除尘器4安装在脱硫塔3顶部，其烟气进口与脱硫塔3的烟气出口连接，其烟气出口与直喷冷却塔5的烟气进口通过管道连接。湿电除尘器4用于除去烟气中的颗粒物，使烟气中颗粒物含量达到5mg/Nm3以下的排放标准。The wet electrostatic precipitator 4 is installed on the top of the desulfurization tower 3, its flue gas inlet is connected to the flue gas outlet of the desulfurization tower 3, and its flue gas outlet is connected to the flue gas inlet of the direct injection cooling tower 5 through pipes. The wet electrostatic precipitator 4 is used to remove the particulate matter in the flue gas, so that the content of the particulate matter in the flue gas can reach the emission standard below 5 mg/Nm 3 .
直喷冷却塔5又称为喷淋冷却塔，内部包含设于顶部的收水器和与直喷冷却塔5的进水口连接的喷嘴。直喷冷却塔5的烟气进口与湿电除尘器4的烟气出口通过管道连接，直喷冷却塔5的烟气出口与烟气升温器6的烟气进口通过管道连接。直喷冷却塔5的雾化喷淋水进口与循环冷却塔8的出水口通过管道连接，直喷冷却塔5的出水口(包括雾化喷淋水和冷凝水)与水-空气换热器7的进水口通过管道连接。在直喷冷却塔5中，水从喷嘴喷出，与从烟气进口进入的烟气进行热交换，使得烟气温度下降至露点以下，从而使得烟气中较大量水蒸气凝结析出。析出水分的烟气经过收水器后，烟气中的水蒸气含量大大降低，排放时不会形成湿烟羽。The direct injection cooling tower 5 is also called a spray cooling tower, and the interior includes a water eliminator arranged on the top and a nozzle connected to the water inlet of the direct injection cooling tower 5 . The flue gas inlet of the direct injection cooling tower 5 is connected with the flue gas outlet of the wet electrostatic precipitator 4 through a pipeline, and the flue gas outlet of the direct injection cooling tower 5 is connected with the flue gas inlet of the flue gas warmer 6 through a pipeline. The atomized spray water inlet of the direct spray cooling tower 5 is connected to the water outlet of the circulating cooling tower 8 through a pipeline, and the water outlet of the direct spray cooling tower 5 (including atomized spray water and condensed water) is connected to the water-air heat exchanger The water inlet of 7 is connected by pipeline. In the direct-injection cooling tower 5, water is sprayed from the nozzles, and exchanges heat with the flue gas entering from the flue gas inlet, so that the temperature of the flue gas drops below the dew point, so that a large amount of water vapor in the flue gas condenses and precipitates. After the moisture-precipitated flue gas passes through the water eliminator, the water vapor content in the flue gas is greatly reduced, and no wet plume will be formed when discharged.
烟气升温器6的烟气进口与直喷冷却塔5的烟气出口通过管道连接，烟气升温器6的烟气出口与烟囱9通过管道连接。在烟气升温器6中，烟气与温度较高的换热介质进行热交换，使烟气升温而换热介质降温。烟气冷却器2和烟气升温器6所使用的换热介质进行循环，不断地与烟气进行热交换，以便节约能量。升温后的烟气进入烟囱9，从烟囱9顶部排出。The flue gas inlet of the flue gas warmer 6 is connected to the flue gas outlet of the direct injection cooling tower 5 through a pipe, and the flue gas outlet of the flue gas warmer 6 is connected to the chimney 9 through a pipe. In the flue gas warmer 6, the flue gas exchanges heat with the higher temperature heat exchange medium, so that the temperature of the flue gas rises and the temperature of the heat exchange medium cools down. The heat exchange medium used by the flue gas cooler 2 and the flue gas warmer 6 circulates and continuously exchanges heat with the flue gas to save energy. The heated flue gas enters the chimney 9 and is discharged from the top of the chimney 9 .
水-空气换热器7的进水口与直喷冷却塔5的出水口通过管道连接，水-空气换热器7的出水口与循环冷却塔8的进水口通过管道连接。在直喷冷却塔5中与烟气热交换的水以及从烟气中析出的水进入水-空气换热器7，与空气进行热交换，使水的温度降低而空气温度升高。水放热，温度降5-10℃；空气吸热，升温5-10℃左右，升温的空气可以用于其他设备的预热。例如，可以将升温的空气用作为炭黑尾气锅炉的预热空气，回收利用该部分热能，提高锅炉的效率(经计算，可提高锅炉效率约在0.5％-1％左右)。The water inlet of the water-air heat exchanger 7 is connected with the water outlet of the direct injection cooling tower 5 through pipelines, and the water outlet of the water-air heat exchanger 7 is connected with the water inlet of the circulating cooling tower 8 through pipelines. The water heat-exchanged with the flue gas in the direct-injection cooling tower 5 and the water separated from the flue gas enter the water-air heat exchanger 7 and exchange heat with the air to lower the temperature of the water and increase the temperature of the air. The water releases heat, and the temperature drops by 5-10°C; the air absorbs heat, and the temperature rises by about 5-10°C, and the heated air can be used for preheating other equipment. For example, the heated air can be used as the preheated air of the carbon black tail gas boiler, and this part of heat energy can be recycled to improve the efficiency of the boiler (by calculation, the efficiency of the boiler can be improved by about 0.5%-1%).
循环冷却塔8的进水口与水-空气换热器7的出水口通过管道连接，循环冷却塔8的出水口分别与直喷冷却塔5的进水口、除铁过滤器10的进水口通过管道连接。在循环冷却塔8中，水被进一步冷却，冷却后的水一部分作为直喷冷却塔5的水源，另一部分流入除铁过滤器10。在除铁过滤器10中，水中的含铁杂质被过滤掉，保证水质达到使用水的要求，以便送至各用水点再次使用。The water inlet of the circulating cooling tower 8 is connected with the water outlet of the water-air heat exchanger 7 through pipelines, and the water outlet of the circulating cooling tower 8 is respectively connected with the water inlet of the direct injection cooling tower 5 and the water inlet of the iron removal filter 10 through pipelines connect. In the circulating cooling tower 8 , the water is further cooled, and part of the cooled water is used as the water source of the direct injection cooling tower 5 , and the other part flows into the iron removal filter 10 . In the iron removal filter 10, the iron-containing impurities in the water are filtered out to ensure that the water quality meets the requirements of water use, so that it can be sent to each water point for reuse.
根据上述的炭黑尾气锅炉烟气脱白系统，提出一种炭黑尾气锅炉烟气脱白方法，该方法包括以下步骤：According to above-mentioned carbon black tail gas boiler flue gas whitening system, propose a kind of carbon black tail gas boiler flue gas whitening method, this method comprises the following steps:
(1)炭黑尾气锅炉产生的烟气温度在180℃左右，将烟气通过引风机1引入烟气冷却器2中，使烟气与80℃左右的换热介质进行热交换，烟气温度下降至120℃左右，换热介质温度上升至120℃左右；(1) The temperature of the flue gas produced by the carbon black tail gas boiler is about 180°C, and the flue gas is introduced into the flue gas cooler 2 through the induced draft fan 1, so that the flue gas can exchange heat with the heat exchange medium at about 80°C, and the flue gas temperature Drop to about 120°C, the temperature of the heat exchange medium rises to about 120°C;
(2)将烟气引入脱硫塔3中，脱除烟气中的SOx，使烟气中的SOx含量达到排放标准；(2) introducing the flue gas into the desulfurization tower 3 to remove SOx in the flue gas so that the SOx content in the flue gas reaches the emission standard;
(3)将烟气引入湿电除尘器4中，除去烟气中颗粒物，使烟气中颗粒物含量达到5mg/Nm3以下的排放标准；(3) flue gas is introduced in the wet electrostatic precipitator 4, removes the particulate matter in the flue gas, makes the particulate matter content in the flue gas reach the discharge standard below 5mg/Nm ;
(4)将烟气引入直喷冷却塔5中，使烟气与30℃左右的喷雾水进行热交换，烟气温度下降至50℃左右，烟气中的大部分水蒸气冷凝析出，水的温度上升至50℃左右；(4) The flue gas is introduced into the direct-injection cooling tower 5, and the flue gas is exchanged with the spray water at about 30°C, the temperature of the flue gas drops to about 50°C, and most of the water vapor in the flue gas is condensed and precipitated. The temperature rises to about 50°C;
(5)将烟气引入烟气升温器6中，使烟气与120℃左右的换热媒介进行热交换，烟气温度上升至80℃左右，换热介质温度下降至80℃左右；(5) The flue gas is introduced into the flue gas warmer 6, so that the flue gas exchanges heat with the heat exchange medium at about 120°C, the temperature of the flue gas rises to about 80°C, and the temperature of the heat exchange medium drops to about 80°C;
(6)将烟气引入烟囱9，烟气从烟囱9排出。(6) The flue gas is introduced into the chimney 9, and the flue gas is discharged from the chimney 9.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645586A (en) * | 2019-10-29 | 2020-01-03 | 江苏省特种设备安全监督检验研究院 | A power plant boiler de-whitening device and its working method |
| CN110935277A (en) * | 2019-12-25 | 2020-03-31 | 河南心连心化学工业集团股份有限公司 | Coal chemical industry solid waste drying tail gas treatment device and treatment method |
| CN111249889A (en) * | 2020-03-13 | 2020-06-09 | 朝阳黑猫伍兴岐炭黑有限责任公司 | A system of carbon black tail gas boiler flue gas desulfurization and drainage treatment |
| CN112901300A (en) * | 2021-03-15 | 2021-06-04 | 西安交通大学 | Novel flue gas whitening system and method |
| CN114935269A (en) * | 2022-06-14 | 2022-08-23 | 衢州佰强新材料科技有限公司 | Carbon black tail gas treatment equipment and process |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050025291A (en) * | 2004-09-23 | 2005-03-14 | 씨이테크 | Method for removing white plume using water-cooling system |
| WO2010139168A1 (en) * | 2009-06-03 | 2010-12-09 | 江苏博际环保工程有限公司 | Digestion circulating fluidized bed flue gas desulfurization method and device |
| CN202270473U (en) * | 2011-10-10 | 2012-06-13 | 杭州三和环保技术工程有限公司 | Carbon black tail gas desulfurization device |
| WO2016058141A1 (en) * | 2014-10-15 | 2016-04-21 | 北京中科净原环保科技有限公司 | Method and device for dedusting and desulphurizing flue gas |
| CN106918050A (en) * | 2017-04-17 | 2017-07-04 | 清华大学 | A kind of residual heat from boiler fume depth retracting device |
| CN108686468A (en) * | 2018-07-16 | 2018-10-23 | 江苏科行环保股份有限公司 | Plume takes off white system and technique |
| CN108837662A (en) * | 2018-08-13 | 2018-11-20 | 金能科技股份有限公司 | A kind of dry kiln gas of carbon black takes off white device and technique |
| CN109260914A (en) * | 2018-11-30 | 2019-01-25 | 山东华创节能环保科技有限公司 | A kind of flue gas using air circulation takes off white system and technique |
| CN109939556A (en) * | 2019-04-22 | 2019-06-28 | 山西华仁通电力科技有限公司 | The flue gas advanced purification system and its method that residual heat utilization-type plume is eliminated |
| CN210410191U (en) * | 2019-08-15 | 2020-04-28 | 太原黑猫炭黑有限责任公司 | Carbon black tail gas boiler flue gas takes off white system |
-
2019
- 2019-08-15 CN CN201910752296.5A patent/CN110354670A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050025291A (en) * | 2004-09-23 | 2005-03-14 | 씨이테크 | Method for removing white plume using water-cooling system |
| WO2010139168A1 (en) * | 2009-06-03 | 2010-12-09 | 江苏博际环保工程有限公司 | Digestion circulating fluidized bed flue gas desulfurization method and device |
| CN202270473U (en) * | 2011-10-10 | 2012-06-13 | 杭州三和环保技术工程有限公司 | Carbon black tail gas desulfurization device |
| WO2016058141A1 (en) * | 2014-10-15 | 2016-04-21 | 北京中科净原环保科技有限公司 | Method and device for dedusting and desulphurizing flue gas |
| CN106918050A (en) * | 2017-04-17 | 2017-07-04 | 清华大学 | A kind of residual heat from boiler fume depth retracting device |
| CN108686468A (en) * | 2018-07-16 | 2018-10-23 | 江苏科行环保股份有限公司 | Plume takes off white system and technique |
| CN108837662A (en) * | 2018-08-13 | 2018-11-20 | 金能科技股份有限公司 | A kind of dry kiln gas of carbon black takes off white device and technique |
| CN109260914A (en) * | 2018-11-30 | 2019-01-25 | 山东华创节能环保科技有限公司 | A kind of flue gas using air circulation takes off white system and technique |
| CN109939556A (en) * | 2019-04-22 | 2019-06-28 | 山西华仁通电力科技有限公司 | The flue gas advanced purification system and its method that residual heat utilization-type plume is eliminated |
| CN210410191U (en) * | 2019-08-15 | 2020-04-28 | 太原黑猫炭黑有限责任公司 | Carbon black tail gas boiler flue gas takes off white system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645586A (en) * | 2019-10-29 | 2020-01-03 | 江苏省特种设备安全监督检验研究院 | A power plant boiler de-whitening device and its working method |
| CN110935277A (en) * | 2019-12-25 | 2020-03-31 | 河南心连心化学工业集团股份有限公司 | Coal chemical industry solid waste drying tail gas treatment device and treatment method |
| CN111249889A (en) * | 2020-03-13 | 2020-06-09 | 朝阳黑猫伍兴岐炭黑有限责任公司 | A system of carbon black tail gas boiler flue gas desulfurization and drainage treatment |
| CN112901300A (en) * | 2021-03-15 | 2021-06-04 | 西安交通大学 | Novel flue gas whitening system and method |
| CN114935269A (en) * | 2022-06-14 | 2022-08-23 | 衢州佰强新材料科技有限公司 | Carbon black tail gas treatment equipment and process |
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