CN102974211A - Circulating fluidized bed boiler in-furnace desulfurization device - Google Patents

Circulating fluidized bed boiler in-furnace desulfurization device Download PDF

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Publication number
CN102974211A
CN102974211A CN2012104382487A CN201210438248A CN102974211A CN 102974211 A CN102974211 A CN 102974211A CN 2012104382487 A CN2012104382487 A CN 2012104382487A CN 201210438248 A CN201210438248 A CN 201210438248A CN 102974211 A CN102974211 A CN 102974211A
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China
Prior art keywords
pump
desulfurizing agent
fluidized bed
circulating fluidized
bed boiler
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Pending
Application number
CN2012104382487A
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Chinese (zh)
Inventor
虞永川
张凯
卿洪坤
郑庆喜
李叶凡
虞瑞鹤
瞿进
詹胡琴
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ZHENJIANG CITY POWER STATION AUXILIARY MACHINERY PLANT CO Ltd
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ZHENJIANG CITY POWER STATION AUXILIARY MACHINERY PLANT CO Ltd
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Priority to CN2012104382487A priority Critical patent/CN102974211A/en
Publication of CN102974211A publication Critical patent/CN102974211A/en
Pending legal-status Critical Current

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Abstract

The present invention provides a circulating fluidized bed boiler in-furnace desulfurization device, including a manual shutdown door arranged at the downward direction of a desulfurizer bin. The underneath of the manual shutdown door is successively connected with a first expansion joint, a feeding valve of a receiving pump, the receiving pump, a second expansion joint, a feeding valve of a charging pump, the charging pump, a charging valve, and an injection pump, wherein the upper feeding port of the injection pump is connected to the charging valve; the air inlet of the injection pump is connected with an air inlet pipe; a discharging port of the injection pump is connected with a distribution device through a conveying pipe, a discharging port of the distribution device is successively connected with a furnace inlet expansion joint, a furnace inlet pneumatic shutdown door and a furnace inlet manual shutdown door; the upper part of the receiving pump is provided with an upper level meter, and the lower part of the feeding pump is provided with a lower level meter. The in-furnace desulfurization device can smoothly transport the desulfurizer in the desulfurizer bin to the boiler furnace, the desulfurizer is smoothly transported, SO2 absorption reaction is conducted, circulating fluidized bed boiler flue gas desulfurization efficiency is high, and the flue gas reaches the standard and is discharged.

Description

A kind of desulphurization in circulating fluidized bed boiler device
Technical field
The present invention relates to a kind of Pneumatic conveying device for powdery material, be more particularly to a kind of desulphurization in circulating fluidized bed boiler device.
Background technology
The advantages such as CFBB has the efficient height, fuel tolerance is wide, Load Regulation is flexible, good environmental protection, development in recent years is very fast, and technology reaches its maturity.Along with China is more and more higher to environmental requirement, the appearance of environmental protection electrovalence policy, the more domestic power plant that has CFBB is firmly grasping transformation or is newly adding desulfurizer.
In recent years, some adopted the power plant of CFBB or were requested resolutely to carry out the boiler tail flue gas desulfurization by environmental administration, and desulphurization in circulating fluidized bed boiler is that the desulfurizing agent in the desulfurizing agent storehouse is transported in the boiler furnace, carries out SO 2Absorption reaction, thereby desulphurization in circulating fluidized bed boiler, the efficient of desulphurization in circulating fluidized bed boiler is low at present, the inefficient reason of desulfurization is: present existing desulphurization in circulating fluidized bed boiler device can not successfully be transported to the desulfurizing agent in the desulfurizing agent storehouse in the boiler furnace, and desulfurizing agent is carried not smooth.
Summary of the invention
The objective of the invention is to overcome above deficiency, a kind of desulphurization in circulating fluidized bed boiler device is provided, it can successfully be transported to the desulfurizing agent in the desulfurizing agent storehouse in the boiler furnace.
A kind of desulphurization in circulating fluidized bed boiler device, comprise be arranged under the desulfurizing agent storehouse to manual shutoff door, described manual shutoff door below is connected to inlet valve, the rewinding pump of first telescopic joint, rewinding pump, second telescopic joint, the inlet valve of feed pump, feed pump, feed valve, jet pump successively, and the upper feeding mouth of jet pump links to each other with feed valve; The air inlet of jet pump is connected to air inlet pipe; The discharging opening of jet pump connects distributor by the material conveying pipeline, and the distributor discharging opening is connected to burner hearth entrance expansion joint, the pneumatic shutoff door of burner hearth entrance, the manual shutoff door of burner hearth entrance successively; The top of described rewinding pump is provided with level-sensing device, and the bottom of described feed pump is provided with lower level-sensing device.
Above-mentioned desulphurization in circulating fluidized bed boiler device, wherein, described material conveying pipeline is provided with and blows block apparatus.
Above-mentioned desulphurization in circulating fluidized bed boiler device wherein, is provided with Pneumatic balanced valve between described rewinding pump and the desulfurizing agent storehouse, and the rewinding pump is communicated with the desulfurizing agent storehouse by Pneumatic balanced valve.
Above-mentioned desulphurization in circulating fluidized bed boiler device, wherein, the top in described desulfurizing agent storehouse is provided with the pressure vacuum relief valve, and the desulfurizing agent storehouse is communicated with the pressure vacuum relief valve.
Above-mentioned desulphurization in circulating fluidized bed boiler device, wherein, the top in described desulfurizing agent storehouse is provided with blowing device, and the desulfurizing agent storehouse is communicated with blowing device.
Above-mentioned desulphurization in circulating fluidized bed boiler device, wherein, the bottom in described desulfurizing agent storehouse is provided with gasification installation.
The invention has the beneficial effects as follows:
The present invention can successfully be transported to the desulfurizing agent in the desulfurizing agent storehouse in the boiler furnace, and desulfurizing agent is carried unimpeded; And carry out SO 2Absorption reaction; Can obtain higher desulfuration efficiency with rational calcium sulfur ratio, make the CFBB smoke desulfurization efficiency high, flue gas can qualified discharge, improves the utilization of ash and slag rate of power plant.
Description of drawings
Fig. 1 is structural representation of the present invention.
The specific embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
A kind of desulphurization in circulating fluidized bed boiler device, comprise be arranged on desulfurizing agent storehouse 1 time to manual shutoff door 2, described manual shutoff door 2 belows are connected to inlet valve 4, the rewinding pump 5 of first telescopic joint 3, rewinding pump, second telescopic joint 6, the inlet valve 7 of feed pump, feed pump 8, feed valve 9, jet pump 10 successively, and the upper feeding mouth of jet pump 10 links to each other with feed valve 9; The air inlet of jet pump 10 is connected to air inlet pipe 11; The discharging opening of jet pump 10 connects distributor 13 by material conveying pipeline 12, and distributor 13 discharging openings are connected to burner hearth entrance expansion joint 14, the pneumatic shutoff door 15 of burner hearth entrance, the manual shutoff door 16 of burner hearth entrance successively; The top of described rewinding pump 5 is provided with level-sensing device, and the bottom of described feed pump 8 is provided with lower level-sensing device.Be provided with at described material conveying pipeline 12 and blow block apparatus 17.Be provided with Pneumatic balanced valve between rewinding pump 5 and desulfurizing agent storehouse 1, rewinding pump 5 is communicated with desulfurizing agent storehouse 1 by Pneumatic balanced valve.Be provided with pressure vacuum relief valve 20 at the top in desulfurizing agent storehouse 1, desulfurizing agent storehouse 1 is communicated with pressure vacuum relief valve 20.Be provided with blowing device 18 at the top in desulfurizing agent storehouse 1, desulfurizing agent storehouse 1 is communicated with blowing device 18.Be provided with gasification installation 19 in the bottom in desulfurizing agent storehouse 1.
Desulfurizing agent is the calcium-based materials such as lime stone, and resource distribution is extensive, and reserves are abundant and cheap, and desulfurization product is neutral solid slag, and is dirty without secondary.
Operational process of the present invention is:
A, desulfurizing agent are delivered in the power plant by closed tank truck, by the pneumatic transport equipment that is arranged on the closed tank truck desulfurizing agent are delivered to limestone powder bin.
At first detect all valves before the operation of b, system and whether be in closed condition, carry and instrument with bleed pressure whether in the scope that requires.When all conditions satisfies, open manual shutoff door 2, open the inlet valve 4 of rewinding pump, the desulfurizing agent that the desulfurizing agent storehouse is 1 li begins to enter 5 li of rewinding pumps through the inlet valve 4 of manual shutoff door 2, first telescopic joint 3, rewinding pump.When desulfurizing agent arrives upper level-sensing device place, close the inlet valve 4 of rewinding pump, give the sealing ring gas-flow closure of the inlet valve 4 of rewinding pump.At this moment open and carry source of the gas, open again feed valve 9, the pneumatic shutoff door 15 of burner hearth entrance, the manual shutoff door 16 of burner hearth entrance, then open the inlet valve 7 of feed pump, desulfurizing agent is through second telescopic joint 6, the inlet valve 7 of feed pump enters feed pump 8, close again the inlet valve 7 of feed pump, desulfurizing agent enters jet pump 10 by feed valve 9, gas enters 10 li in jet pump through air inlet pipe 11, mix with gas at jet pump 10 interior desulfurizing agents, mixture enters material conveying pipeline 12, strength makes mixture be transported to distributor 13 through material conveying pipeline 12, and distributor 13 distributes mixture and makes mixture through burner hearth entrance expansion joint 14, the pneumatic shutoff door 15 of burner hearth entrance, the manual shutoff door 16 of burner hearth entrance enters boiler furnace; Desulfurizing agent is carried unimpeded; And in stove, carry out SO 2Absorption reaction; Can obtain higher desulfuration efficiency with rational calcium sulfur ratio, make the CFBB smoke desulfurization efficiency high, flue gas can qualified discharge, can improve in addition the utilization of ash and slag rate of power plant.
C, any instantaneous what carry, when as long as the desulfurizing agent in the feed pump 8 arrives lower level-sensing device place, need open the inlet valve 7 of feed pump, allow the desulfurizing agent in the rewinding pump 5 fall into 8 li of feed pumps, after closing Deng the inlet valve 7 of feed pump, open the inlet valve 4 of rewinding pump, allow desulfurizing agent fall into rewinding pump 5 from desulfurizing agent storehouse 1, when desulfurizing agent arrives upper level-sensing device place, close the inlet valve 4 of rewinding pump, give the sealing ring gas-flow closure of the inlet valve 4 of rewinding pump.
D, when the setting value of pressure overpressure transmitter of the present invention, blow block apparatus 17 and open, blow stifledly, when pressure of the present invention returns to normal value, close and blow block apparatus 17.
Because: be provided with Pneumatic balanced valve between rewinding pump 5 and desulfurizing agent storehouse 1, rewinding pump 5 is communicated with desulfurizing agent storehouse 1 by Pneumatic balanced valve; Thereby can balance pressure reduction.
Because: be provided with pressure vacuum relief valve 20 at the top in desulfurizing agent storehouse 1, desulfurizing agent storehouse 1 is communicated with pressure vacuum relief valve 20; Thereby: when the air pressure in 1 li in desulfurizing agent storehouse was too large, pressure vacuum relief valve 20 was opened and is discharged gas, reduces the air pressure in 1 li in desulfurizing agent storehouse.
Because: be provided with blowing device 18 at the top in desulfurizing agent storehouse 1, desulfurizing agent storehouse 1 is communicated with blowing device 18; Thereby: 1 li in desulfurizing agent storehouse can produce the desulfurizing agent dust, and dust upwards enters 18 li of blowing devices, and blowing device 18 can be collected dust and the collected dusts of jetting, and makes collected dust get back to 1 li in desulfurizing agent storehouse.
Because: be provided with gasification installation 19 in the bottom in desulfurizing agent storehouse 1; Thereby: gasification installation 19 is blown in the bottom in desulfurizing agent storehouse 1, just can strengthen the flowability of the desulfurizing agent in 1 bottom, desulfurizing agent storehouse, be conducive to desulfurizing agent from the desulfurizing agent storehouse 1 li fall downwards, be conducive to carry desulfurizing agent downwards.
In sum, the present invention can successfully be transported to the desulfurizing agent in the desulfurizing agent storehouse in the boiler furnace, and desulfurizing agent is carried unimpeded; And carry out SO 2Absorption reaction; Can obtain higher desulfuration efficiency with rational calcium sulfur ratio, make the CFBB smoke desulfurization efficiency high, flue gas can qualified discharge, improves the utilization of ash and slag rate of power plant.

Claims (6)

1. desulphurization in circulating fluidized bed boiler device, it is characterized in that, comprise be arranged under the desulfurizing agent storehouse to manual shutoff door, described manual shutoff door below is connected to inlet valve, the rewinding pump of first telescopic joint, rewinding pump, second telescopic joint, the inlet valve of feed pump, feed pump, feed valve, jet pump successively, and the upper feeding mouth of jet pump links to each other with feed valve; The air inlet of jet pump is connected to air inlet pipe; The discharging opening of jet pump connects distributor by the material conveying pipeline, and the distributor discharging opening is connected to burner hearth entrance expansion joint, the pneumatic shutoff door of burner hearth entrance, the manual shutoff door of burner hearth entrance successively; The top of described rewinding pump is provided with level-sensing device, and the bottom of described feed pump is provided with lower level-sensing device.
2. desulphurization in circulating fluidized bed boiler device as claimed in claim 1 is characterized in that, described material conveying pipeline is provided with and blows block apparatus.
3. desulphurization in circulating fluidized bed boiler device as claimed in claim 1 is characterized in that, is provided with Pneumatic balanced valve between described rewinding pump and the desulfurizing agent storehouse, and the rewinding pump is communicated with the desulfurizing agent storehouse by Pneumatic balanced valve.
4. desulphurization in circulating fluidized bed boiler device as claimed in claim 1 is characterized in that, the top in described desulfurizing agent storehouse is provided with the pressure vacuum relief valve, and the desulfurizing agent storehouse is communicated with the pressure vacuum relief valve.
5. desulphurization in circulating fluidized bed boiler device as claimed in claim 1 is characterized in that, the top in described desulfurizing agent storehouse is provided with blowing device, and the desulfurizing agent storehouse is communicated with blowing device.
6. such as claim 1,2,3,4,5 or 6 described desulphurization in circulating fluidized bed boiler devices, it is characterized in that the bottom in described desulfurizing agent storehouse is provided with gasification installation.
CN2012104382487A 2012-11-06 2012-11-06 Circulating fluidized bed boiler in-furnace desulfurization device Pending CN102974211A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103215080A (en) * 2013-05-10 2013-07-24 东南大学 Ash discharge device for high-temperature high-pressure ash particle and ash discharge method thereof
CN103272475A (en) * 2013-05-31 2013-09-04 神华集团有限责任公司 Desulfurization system of circulating fluidized bed boiler
CN103566751A (en) * 2013-11-01 2014-02-12 安徽金禾实业股份有限公司 Fluidized bed boiler desulfurization method and device
CN104383785A (en) * 2014-11-18 2015-03-04 西安热工研究院有限公司 Uniform powder adsorbent injection system
CN105617861A (en) * 2016-04-01 2016-06-01 中国大唐集团科学技术研究院有限公司 Device for removing SO3 through flue injection of dry powder adsorbent
CN105817136A (en) * 2016-06-03 2016-08-03 镇江京华电力环保工程公司 Desulphurization system in circulating fluidized bed boiler
CN106237830A (en) * 2016-08-30 2016-12-21 中国神华能源股份有限公司 The material feeding control method of a kind of lime stone handling system and system
CN106735178A (en) * 2017-02-17 2017-05-31 广州蓝磁新材料科技有限公司 A kind of metal dust continuous vacuum vertical annealing furnace
CN107854966A (en) * 2017-11-20 2018-03-30 深圳东方锅炉控制有限公司 A kind of method and system for improving high basic metal coal and staiing coking
CN109852428A (en) * 2019-04-02 2019-06-07 大连森雅能源环保设备有限公司 Biomass feeding apparatus
CN114606026A (en) * 2022-04-26 2022-06-10 北京北科环境工程有限公司 Method for simultaneously desulfurizing and dechlorinating blast furnace gas

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101780364A (en) * 2009-01-20 2010-07-21 贵州电力调度通信局 On-line calculation method for desulfurization efficiency of circulating fluidized bed boiler
CN201545512U (en) * 2009-06-10 2010-08-11 陈毅 Limestone continuous conveying system
CN202893181U (en) * 2012-11-06 2013-04-24 镇江市电站辅机厂有限公司 Desulphurization device in circulating fluidized bed boiler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101780364A (en) * 2009-01-20 2010-07-21 贵州电力调度通信局 On-line calculation method for desulfurization efficiency of circulating fluidized bed boiler
CN201545512U (en) * 2009-06-10 2010-08-11 陈毅 Limestone continuous conveying system
CN202893181U (en) * 2012-11-06 2013-04-24 镇江市电站辅机厂有限公司 Desulphurization device in circulating fluidized bed boiler

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103215080A (en) * 2013-05-10 2013-07-24 东南大学 Ash discharge device for high-temperature high-pressure ash particle and ash discharge method thereof
CN103215080B (en) * 2013-05-10 2014-11-05 东南大学 Ash discharge device for high-temperature high-pressure ash particle and ash discharge method thereof
CN103272475A (en) * 2013-05-31 2013-09-04 神华集团有限责任公司 Desulfurization system of circulating fluidized bed boiler
CN103272475B (en) * 2013-05-31 2016-02-03 神华集团有限责任公司 The desulphurization system of CFBB
CN103566751A (en) * 2013-11-01 2014-02-12 安徽金禾实业股份有限公司 Fluidized bed boiler desulfurization method and device
CN103566751B (en) * 2013-11-01 2016-04-13 安徽金禾实业股份有限公司 A kind of fluidized-bed combustion boiler sulfur method and device thereof
CN104383785A (en) * 2014-11-18 2015-03-04 西安热工研究院有限公司 Uniform powder adsorbent injection system
CN105617861B (en) * 2016-04-01 2019-04-23 中国大唐集团科学技术研究院有限公司 A kind of dry powder adsorbent flue injection removing SO3Equipment
CN105617861A (en) * 2016-04-01 2016-06-01 中国大唐集团科学技术研究院有限公司 Device for removing SO3 through flue injection of dry powder adsorbent
CN105817136A (en) * 2016-06-03 2016-08-03 镇江京华电力环保工程公司 Desulphurization system in circulating fluidized bed boiler
CN106237830A (en) * 2016-08-30 2016-12-21 中国神华能源股份有限公司 The material feeding control method of a kind of lime stone handling system and system
CN106735178A (en) * 2017-02-17 2017-05-31 广州蓝磁新材料科技有限公司 A kind of metal dust continuous vacuum vertical annealing furnace
CN107854966A (en) * 2017-11-20 2018-03-30 深圳东方锅炉控制有限公司 A kind of method and system for improving high basic metal coal and staiing coking
CN109852428A (en) * 2019-04-02 2019-06-07 大连森雅能源环保设备有限公司 Biomass feeding apparatus
CN114606026A (en) * 2022-04-26 2022-06-10 北京北科环境工程有限公司 Method for simultaneously desulfurizing and dechlorinating blast furnace gas
CN114606026B (en) * 2022-04-26 2023-01-17 北京北科环境工程有限公司 Method for simultaneously desulfurizing and dechlorinating blast furnace gas

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Application publication date: 20130320