CN204665248U - A kind of fire coal boiler fume classification treatment system - Google Patents
A kind of fire coal boiler fume classification treatment system Download PDFInfo
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Abstract
本实用新型公开了一种燃煤锅炉烟气分级处理系统，燃煤锅炉烟气分级处理系统连接在燃煤锅炉和烟囱之间。燃煤锅炉烟气处理系统包括热交换器、及烟气余热换热器，所述烟气余热换热器包括高温侧烟气余热换热器、及低温侧烟气净化余热换热器。低温侧烟气净化余热换热器连接有热泵，热泵的管路与高温侧烟气余热换热器的管路经主管路汇合后连接热交换器。燃煤锅炉烟气分级处理系统将锅炉烟气余热高效的分级回收利用。高温侧烟气余热换热器能够吸收烟气热量，降低烟气温度，减少脱硫塔的喷水量；低温侧烟气净化余热换热器能冷凝脱硫塔后烟气中水分，经管束阻挡和凝结水吸收几乎能带走烟气中全部的烟尘，达到烟气超净化和除湿的效果。
The utility model discloses a coal-fired boiler flue gas classification treatment system, which is connected between the coal-fired boiler and the chimney. The coal-fired boiler flue gas treatment system includes a heat exchanger and a flue gas waste heat heat exchanger, and the flue gas waste heat heat exchanger includes a high temperature side flue gas waste heat heat exchanger and a low temperature side flue gas purification waste heat heat exchanger. The flue gas purification waste heat heat exchanger on the low-temperature side is connected to a heat pump, and the pipes of the heat pump and the pipes of the flue gas waste heat heat exchanger on the high-temperature side are merged through the main pipe and then connected to the heat exchanger. The coal-fired boiler flue gas classification treatment system efficiently recovers and utilizes the waste heat of the boiler flue gas in stages. The flue gas heat exchanger on the high temperature side can absorb the heat of the flue gas, reduce the temperature of the flue gas, and reduce the amount of water sprayed by the desulfurization tower; the flue gas purification waste heat heat exchanger on the low temperature side can condense the moisture in the flue gas behind the desulfurization tower, which is blocked by the tube bundle and The absorption of condensed water can take away almost all the smoke and dust in the flue gas, achieving the effect of ultra-purification and dehumidification of the flue gas.
Description
技术领域technical field
本实用新型涉及燃煤烟气处理领域，尤其是一种燃煤锅炉烟气分级处理系统。The utility model relates to the field of coal-fired flue gas treatment, in particular to a coal-fired boiler flue gas classification treatment system.
背景技术Background technique
节能减排是关系经济社会可持续发展的重大战略问题，国家发改委、环境保护部和国家能源局3部委于2014年9月联合发布了《煤电节能减排升级与改造行动计划(2014～2020年)》，要求东部地区新建燃煤机组排放基本达到燃气轮机组污染物排放限值，即基准氧含量6％条件下，烟尘、SO2、NOX排放浓度分别不高于10mg/m3、35mg/m3、50mg/m3，对中部和西部地区也提出了要求。Energy conservation and emission reduction is a major strategic issue related to the sustainable development of the economy and society. In September 2014, the National Development and Reform Commission, the Ministry of Environmental Protection and the National Energy Administration jointly issued the "Coal Power Energy Conservation and Emission Reduction Upgrading and Transformation Action Plan (2014-2020 2009)", which requires that the emission of new coal-fired units in the eastern region should basically meet the pollutant emission limits of gas turbine units, that is, under the condition of a reference oxygen content of 6%, the emission concentrations of soot, SO 2 , and NO X should not be higher than 10mg/m 3 and 35mg respectively /m 3 , 50mg/m 3 , the central and western regions are also required.
据电力规划设计总院预测，到2020年，全国火电装机容量将达12.2亿千瓦，新增装机容量约3亿千瓦。燃煤发电虽已是我国煤资源利用之“最清洁”方式，但因其基数大，其排放的废热、废气仍是制约环境发展的主要因素之一。According to the forecast of the General Institute of Electric Power Planning and Design, by 2020, the installed capacity of thermal power in the country will reach 1.22 billion kilowatts, and the newly added installed capacity will be about 300 million kilowatts. Although coal-fired power generation is already the "cleanest" way to utilize coal resources in my country, its waste heat and waste gas emissions are still one of the main factors restricting environmental development due to its large base.
实用新型内容Utility model content
为了解决现有技术的不足，本实用新型提出了一种燃煤锅炉烟气分级处理系统。本实用新型能分级有效的提取烟气中的废热，提供给相应的供热系统合理利用；对烟气中的粉尘进行最大限度的净化，达到综合节能和环保的作用。In order to solve the deficiencies of the prior art, the utility model proposes a coal-fired boiler flue gas classification treatment system. The utility model can effectively extract the waste heat in the flue gas in stages and provide it to the corresponding heating system for rational use; it can purify the dust in the flue gas to the greatest extent and achieve the functions of comprehensive energy saving and environmental protection.
本实用新型采用如下技术方案：The utility model adopts the following technical solutions:
一种燃煤锅炉烟气分级处理系统，燃煤锅炉烟气分级处理系统连接在燃煤锅炉和烟囱之间，所述燃煤锅炉烟气处理系统包括热交换器、及烟气余热换热器，所述烟气余热换热器包括高温侧烟气余热换热器、及低温侧烟气净化余热换热器；A coal-fired boiler flue gas classification treatment system, the coal-fired boiler flue gas classification treatment system is connected between the coal-fired boiler and the chimney, the coal-fired boiler flue gas treatment system includes a heat exchanger, and a flue gas waste heat heat exchanger , the flue gas waste heat exchanger includes a high temperature side flue gas waste heat exchanger and a low temperature side flue gas purification waste heat heat exchanger;
所述低温侧烟气净化余热换热器连接有热泵，热泵的管路与高温侧烟气余热换热器的管路经主管路汇合后连接热交换器。The flue gas purification waste heat heat exchanger on the low-temperature side is connected to a heat pump, and the pipes of the heat pump and the pipes of the flue gas waste heat heat exchanger on the high-temperature side are merged through the main pipe and then connected to the heat exchanger.
本实用新型一种燃煤锅炉烟气分级处理系统，还包括空气预热器、及脱硫塔，所述空气预热器连接锅炉尾部的烟道，空气预热器通过排烟通道连接高温侧烟气余热换热器，高温侧烟气余热换热器连接脱硫塔，脱硫塔连接低温侧烟气净化余热换热器，低温侧烟气净化余热换热器安装在脱硫塔和烟囱之间。The utility model relates to a coal-fired boiler flue gas classification treatment system, which also includes an air preheater and a desulfurization tower. The gas waste heat exchanger, the flue gas waste heat heat exchanger on the high temperature side is connected to the desulfurization tower, the desulfurization tower is connected to the low temperature side flue gas purification waste heat heat exchanger, and the low temperature side flue gas purification waste heat heat exchanger is installed between the desulfurization tower and the chimney.
进一步地，所述主管路与热交换器之间连接有用于控制循环水流量的调节阀。Further, a regulating valve for controlling the flow of circulating water is connected between the main pipeline and the heat exchanger.
进一步地，所述热交换器连接锅炉补水管道，锅炉补水管道内的常温水进入热交换器升温后进入锅炉，并降低循环水系统的水温。Further, the heat exchanger is connected to the boiler water supply pipe, and the normal temperature water in the boiler water supply pipe enters the heat exchanger to heat up and then enters the boiler, and lowers the water temperature of the circulating water system.
进一步地，所述主管路通过调节阀连接有热介质管网，热介质管网向外输出高位可利用热源。Further, the main pipeline is connected to a heat medium pipe network through a regulating valve, and the heat medium pipe network outputs a high-level available heat source to the outside.
进一步地，所述高温侧烟气余热换热器、及低温侧烟气净化余热换热器均为氟塑料换热器。Further, the flue gas waste heat heat exchanger on the high temperature side and the flue gas purification waste heat heat exchanger on the low temperature side are both fluoroplastic heat exchangers.
采用如上技术方案取得的有益技术效果为：The beneficial technical effect obtained by adopting the above technical scheme is:
一种燃煤锅炉烟气分级处理系统将锅炉烟气余热高效的分级回收利用，高温侧烟气余热换热器能够吸收烟气热量，降低烟气温度，减少脱硫塔的喷水量，此外高温侧烟气余热换热器还能阻挡烟气中的灰尘，减轻脱硫塔的工作压力；低温侧烟气净化余热换热器能冷凝脱硫塔后烟气中经管束阻挡和凝结水吸收几乎能带走烟气中全部的烟尘，达到烟气超净化和除湿的效果，经过处理后的凝结水可以用于冷却塔喷淋或者脱硫用水，起到了节能环保的作用。A coal-fired boiler flue gas classification treatment system efficiently grades and recycles boiler flue gas waste heat. The side flue gas waste heat heat exchanger can also block the dust in the flue gas and reduce the working pressure of the desulfurization tower; the low temperature side flue gas purification waste heat heat exchanger can condense the flue gas after the desulfurization tower is blocked by the tube bundle and condensed water is absorbed. Remove all the smoke and dust in the flue gas to achieve the effect of ultra-purification and dehumidification of the flue gas. The condensed water after treatment can be used for cooling tower spray or desulfurization water, which plays a role in energy saving and environmental protection.
附图说明Description of drawings
图1为燃煤锅炉烟气分级处理系统示意图。Figure 1 is a schematic diagram of a coal-fired boiler flue gas classification treatment system.
图中：1、锅炉；2、空气预热器；3、高温侧烟气余热换热器；4、调节阀；5、热交换器；6、脱硫塔；7、低温侧烟气净化余热换热器；8、热泵；9、烟囱。In the figure: 1. Boiler; 2. Air preheater; 3. Flue gas waste heat heat exchanger on the high temperature side; 4. Regulating valve; 5. Heat exchanger; 6. Desulfurization tower; 7. Flue gas purification waste heat exchanger on the low temperature side Heater; 8. Heat pump; 9. Chimney.
具体实施方式Detailed ways
结合附图1对本实用新型的具体实施方式做进一步说明：The specific embodiment of the utility model is further described in conjunction with accompanying drawing 1:
一种燃煤锅炉烟气分级处理系统，燃煤锅炉烟气分级处理系统连接在燃煤锅炉和烟囱之间，所述燃煤锅炉烟气处理系统包括热交换器、及烟气余热换热器，所述烟气余热换热器包括高温侧烟气余热换热器、及低温侧烟气净化余热换热器。低温侧烟气净化余热换热器连接有热泵，热泵的管路与高温侧烟气余热换热器的管路经主管路汇合后连接热交换器。A coal-fired boiler flue gas classification treatment system, the coal-fired boiler flue gas classification treatment system is connected between the coal-fired boiler and the chimney, the coal-fired boiler flue gas treatment system includes a heat exchanger, and a flue gas waste heat heat exchanger , the flue gas waste heat exchanger includes a high temperature side flue gas waste heat exchanger and a low temperature side flue gas purification waste heat heat exchanger. The flue gas purification waste heat heat exchanger on the low-temperature side is connected to a heat pump, and the pipes of the heat pump and the pipes of the flue gas waste heat heat exchanger on the high-temperature side are merged through the main pipe and then connected to the heat exchanger.
燃煤锅炉烟气分级处理系统还包括空气预热器、及脱硫塔，所述空气预热器连接锅炉尾部的烟道，空气预热器通过排烟通道连接高温侧烟气余热换热器，高温侧烟气余热换热器连接脱硫塔，脱硫塔连接低温侧烟气净化余热换热器，低温侧烟气净化余热换热器安装在脱硫塔和烟囱之间。The coal-fired boiler flue gas classification treatment system also includes an air preheater and a desulfurization tower. The air preheater is connected to the flue at the tail of the boiler. The flue gas waste heat exchanger on the high temperature side is connected to the desulfurization tower, and the desulfurization tower is connected to the flue gas purification waste heat exchanger on the low temperature side, and the flue gas purification waste heat exchanger on the low temperature side is installed between the desulfurization tower and the chimney.
主管路与热交换器之间连接有用于控制循环水流量的调节阀。热交换器连接锅炉补水管道，锅炉补水管道内的常温水进入热交换器升温后进入锅炉，并降低循环水系统的水温。主管路通过调节阀连接有热介质管网，热介质管网向外输出高位可利用热源。通过调节阀控制水流量。A regulating valve for controlling the flow of circulating water is connected between the main pipeline and the heat exchanger. The heat exchanger is connected to the boiler water supply pipe, and the normal temperature water in the boiler water supply pipe enters the heat exchanger to heat up and then enters the boiler, and reduces the water temperature of the circulating water system. The main pipeline is connected to a heat medium pipe network through a regulating valve, and the heat medium pipe network outputs a high-level available heat source to the outside. Water flow is controlled by a regulating valve.
高温侧烟气余热换热器、及低温侧烟气净化余热换热器均为氟塑料换热器。特殊氟塑料换热器其独特的耐酸蚀、耐温和不结垢性能，使之为现有技术中能用于烟气余热回收中最经济性方案。The flue gas waste heat heat exchanger on the high temperature side and the flue gas purification waste heat heat exchanger on the low temperature side are all fluoroplastic heat exchangers. The unique performance of acid corrosion resistance, temperature resistance and non-scaling of the special fluoroplastic heat exchanger makes it the most economical solution that can be used in flue gas waste heat recovery in the prior art.
如图1所示，锅炉1尾部烟道排出的烟气经过空气预热器2降温后，经过烟道进入高温侧烟气余热换热器3，与换热器循环水第一次热量交换，温度降低，进入脱硫塔6脱硫降温，然后经过低温侧烟气净化余热换热器7进行第二次余热回收，并冷凝烟气中的水分，经管束阻挡和凝结水吸收几乎能带走烟气中全部的烟尘，然后清洁后的烟气经过烟囱9排往大气。As shown in Figure 1, the flue gas discharged from the flue at the tail of the boiler 1 is cooled by the air preheater 2, then enters the flue gas waste heat heat exchanger 3 on the high temperature side through the flue, and exchanges heat with the circulating water of the heat exchanger for the first time. The temperature drops, enters the desulfurization tower 6 to desulfurize and cool down, and then passes through the low-temperature side flue gas purification waste heat heat exchanger 7 for the second waste heat recovery, and condenses the moisture in the flue gas, which can almost take away the flue gas after being blocked by the tube bundle and condensed water absorption All the flue dust in the air, then the cleaned flue gas is discharged to the atmosphere through the chimney 9.
低温侧烟气净化余热换热器7中的循环水吸收烟气中的热量后升温，作为热源水进入热泵8降温后再次进入低温侧烟气净化余热换热器7循环，热泵8的热水吸收热量后与来自高温侧烟气余热换热器3的循环水二合一，通过调节阀4控制进入需加热介质管网或者进入热交换器5加热锅炉补水。The circulating water in the flue gas purification waste heat heat exchanger 7 on the low-temperature side absorbs the heat in the flue gas and heats up. As the heat source water, it enters the heat pump 8 to cool down and then enters the low-temperature side flue gas purification waste heat heat exchanger 7 for circulation. The hot water from the heat pump 8 After absorbing the heat, it is combined with the circulating water from the flue gas heat exchanger 3 on the high temperature side, and is controlled by the regulating valve 4 to enter the pipe network of the medium to be heated or enter the heat exchanger 5 to heat the boiler to make up water.
当然，以上说明仅仅为本实用新型的较佳实施例，本实用新型并不限于列举上述实施例，应当说明的是，任何熟悉本领域的技术人员在本说明书的指导下，所做出的所有等同替代、明显变形形式，均落在本说明书的实质范围之内，理应受到本实用新型的保护。Of course, the above descriptions are only preferred embodiments of the present invention, and the present invention is not limited to the above-mentioned embodiments. It should be noted that any person skilled in the art can make all the Equivalent substitutions and obvious deformation forms all fall within the essential scope of this specification and should be protected by the utility model.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287640A (en) * | 2016-08-25 | 2017-01-04 | 关文吉 | The Wet smoke heat-exchange system of a kind of boiler of power plant and heat-exchange method |
| CN106382645A (en) * | 2016-08-25 | 2017-02-08 | 关文吉 | Dry flue gas heat exchange system and heat exchange method of boiler of power station |
| CN107676841A (en) * | 2017-10-24 | 2018-02-09 | 北京龙电宏泰环保科技有限公司 | A kind of flue gas waste heat recovery system and method for being used to heat different pressures hot net water |
| CN108479287A (en) * | 2018-04-23 | 2018-09-04 | 江苏双良新能源装备有限公司 | A kind of device and method for eliminating fire coal boiler fume plume |
| CN109579038A (en) * | 2018-11-27 | 2019-04-05 | 常州大学 | Natural gas flue gas dehumidifying residual heat reutilizing system |
| CN114278959A (en) * | 2021-12-28 | 2022-04-05 | 天津华赛尔传热设备有限公司 | A waste heat recovery system for gas boiler and gas boiler |
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2015
- 2015-05-28 CN CN201520352828.3U patent/CN204665248U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287640A (en) * | 2016-08-25 | 2017-01-04 | 关文吉 | The Wet smoke heat-exchange system of a kind of boiler of power plant and heat-exchange method |
| CN106382645A (en) * | 2016-08-25 | 2017-02-08 | 关文吉 | Dry flue gas heat exchange system and heat exchange method of boiler of power station |
| CN107676841A (en) * | 2017-10-24 | 2018-02-09 | 北京龙电宏泰环保科技有限公司 | A kind of flue gas waste heat recovery system and method for being used to heat different pressures hot net water |
| CN107676841B (en) * | 2017-10-24 | 2023-05-02 | 北京龙电宏泰环保科技有限公司 | Flue gas waste heat recovery method for heating heat supply network water with different pressures |
| CN108479287A (en) * | 2018-04-23 | 2018-09-04 | 江苏双良新能源装备有限公司 | A kind of device and method for eliminating fire coal boiler fume plume |
| CN109579038A (en) * | 2018-11-27 | 2019-04-05 | 常州大学 | Natural gas flue gas dehumidifying residual heat reutilizing system |
| CN114278959A (en) * | 2021-12-28 | 2022-04-05 | 天津华赛尔传热设备有限公司 | A waste heat recovery system for gas boiler and gas boiler |
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