CN207056338U - The regenerating unit of sour gas trapping solution in a kind of power-plant flue gas - Google Patents

The regenerating unit of sour gas trapping solution in a kind of power-plant flue gas Download PDF

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Publication number
CN207056338U
CN207056338U CN201720886000.5U CN201720886000U CN207056338U CN 207056338 U CN207056338 U CN 207056338U CN 201720886000 U CN201720886000 U CN 201720886000U CN 207056338 U CN207056338 U CN 207056338U
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gas
outlet
liquid
solution
kettle
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CN201720886000.5U
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Inventor
郭东方
候法柱
牛红伟
刘练波
郜时旺
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Huaneng Clean Energy Research Institute
Huaneng Group Technology Innovation Center Co Ltd
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Huaneng Clean Energy Research Institute
Huaneng Group Technology Innovation Center Co Ltd
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Abstract

The regenerating unit of sour gas trapping solution in a kind of power-plant flue gas,Device includes the built-in circulation pipe positioned at heating evaporation room center,The bottom inlet of built-in circulation pipe is connected with the rich solution pump of absorption plant,Top exit is located at the top of liquid distribution trough,Liquid distribution trough is connected with the entrance of equally distributed heating tube in heating evaporation room,The outlet of heating tube directly connects with lean solution kettle,The bottom lean solution outlet of lean solution kettle is connected with lean pump,Upper gas exit sets demister,Gas vent is connected with the entrance of gas-liquid separator,The bottom liquid outlet of gas-liquid separator is connected with lean solution kettle,Top gas outlet is connected with aspiration pump,The utility model carries out rich solution heating desorption using tube type falling-film mode,Rich solution steam flow flows to identical with liquid film,Liquid film can be made evenly,It is thinner,Flow velocity is faster,Be advantageous to reduce heat transmission resistance,Improve the thermal efficiency and regeneration effect,The higher absorbent system of the viscosity that is particularly suitable for use in.

Description

The regenerating unit of sour gas trapping solution in a kind of power-plant flue gas
Technical field
The utility model belongs to power-plant flue gas purification treatment technology field, sour gas in more particularly to a kind of power-plant flue gas The regenerating unit of trapping solution.
Background technology
It is interior for a long time in electric structure of the China based on coal electricity to be difficult to change, the SO in coal-fired plant flue gas2And CO2It is to draw The main reason for playing the Global Environmental Problems such as acid rain, atmosphere pollution and greenhouse effects, China is to controlling SO2And CO2Discharge Pay close attention, especially to SO2Discharge has strict limitation.
At present, coal-burning power plant CO2For removing sulfuldioxide based on the hydramine chemical absorption method of recyclable regenerative, the technology is also to have Hope the CO for most realizing large-scale commercial soon2Trapping technique.SO2For removing sulfuldioxide based on limestone-gypsum method, absorbent can not Circular regeneration.To solve limestone-gypsum method Problems Existing, for SO2The characteristic of sour gas, part power plant utilize alkalescent Buffer realize SO2Absorption and regeneration.Compared with limestone-gypsum sulfur removal technology, regenerative sulfur binding technological process is simple, no Gypsum and other solid discarded object, and absorbent recyclable regenerative and by-product SO can be produced2, sulfuric acid, the chemicals such as sulphur.
The subject matter that the renewable removing process of sour gas faces in power-plant flue gas is absorbent supported acidic gas The rich solution formed afterwards needs sent for regeneration tower thermal regeneration, and this process needs to consume a large amount of steam, cause system energy consumption compared with Greatly, absorbent especially higher to viscosity, conventional regeneration mode is less efficient and high energy consumption.Therefore, rich solution regeneration side is improved Formula, improve steam utilization efficiency, popularization and application energy-saving to renewable removing sulfuldioxide and in power-plant flue gas field of purification It is significant.
The content of the invention
The shortcomings that in order to overcome above-mentioned prior art, the purpose of this utility model is acid in a kind of power-plant flue gas is provided The regenerating unit of gas trapping solution, to improve steam utilization efficiency, reduce rich solution regeneration energy consumption.
To achieve these goals, the technical solution adopted in the utility model is:
The regenerating unit of sour gas trapping solution in a kind of power-plant flue gas, including in the center of heating evaporation room 1 Circulation pipe 2 is put, the bottom inlet of built-in circulation pipe 2 is connected with the rich solution pump 3 of absorption plant, and top exit is located at liquid distribution trough 4 top, liquid distribution trough 4 are connected with the entrance of equally distributed heating tube 5 in heating evaporation room 1, and the outlet of heating tube 5 is straight Connect and connected with lean solution kettle 6, the upper gas outlet of lean solution kettle 6 is connected with the entrance of gas-liquid separator 9, the bottom of gas-liquid separator 9 Portion's liquid outlet tieback to lean solution kettle 6, top gas outlet is connected with aspiration pump 10.
The upper gas exit of the lean solution kettle 6 sets demister 8.
The bottom lean solution outlet of the lean solution kettle 6 passes through absorbent entrance phase of the lean pump 7 through heat exchanger with absorption plant Even.
The heating tube 5 is vertical duct, is suspended in the top of lean solution kettle 6, the top of heating tube 5 is entrance, and bottom is outlet.
The steam inlet of the heating evaporation room 1 is located at top, and condensation-water drain is arranged at bottom.
The heating tube 5 is falling film heating pipe.
Compared with prior art, the utility model carries out rich solution heating desorption, rich solution steam stream using tube type falling-film mode It is identical to being flowed to liquid film, can cause liquid film is more uniform, thinner, flow velocity faster, be advantageous to reduce heat transmission resistance, improve heat Efficiency and regeneration effect, the higher absorbent system of the viscosity that is particularly suitable for use in.For conventional filler tower, device is more simple It is single, and should not block, generation situations such as in the absence of tower liquid flooding, and meanwhile it is also relatively easy in terms of maintenance and cleaning.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Embodiment
Describe embodiment of the present utility model in detail with reference to the accompanying drawings and examples.
As shown in figure 1, in a kind of power-plant flue gas sour gas trapping solution regenerating unit, including positioned at heating evaporation room The built-in circulation pipe 2 at 1 center, the bottom inlet of built-in circulation pipe 2 are connected with the rich solution pump 3 of absorption plant, and top exit is located at The top of liquid distribution trough 4, liquid distribution trough 4 are connected with the entrance of equally distributed heating tube 5 in heating evaporation room 1, heating The outlet of pipe 5 directly connects with lean solution kettle 6, and the bottom lean solution outlet of lean solution kettle 6 is connected with lean pump 7, upper gas exit Demister 8 is set, and gas vent is connected with the entrance of gas-liquid separator 9, bottom liquid outlet and the lean solution kettle of gas-liquid separator 9 6 are connected, and top gas outlet is connected with aspiration pump 10.Heat steam by the upper inlet of heating evaporation room 1 to be entered, condensed water is under Side outlet outflow.
Working theory and processing of the present utility model is as follows:
Enter the built-in circulation pipe 2 at the center of heating evaporation room 1 after rich solution heat exchange from absorption plant by rich solution pump 3 Bottom, and flow up;Rich solution enters the liquid distribution trough 4 on the top of heating evaporation room 1 after being preheated in built-in circulation pipe 2, Each falling film heating pipe 5 is flowed into after liquid distribution trough 4 again cloth liquid, forming liquid film along inner-walls of duct flows downward, while Heat transfer is carried out in heating evaporation room 1;Steam is formed in rich solution liquid film heating process, while the sour gas in rich solution is able to Regeneration;Steam containing acid gas regeneration gas rapid rundown in heating tube 5, liquid film is blown thinner, evenly and Flow velocity faster, substantially reduces heat transmission resistance, improves heat transfer efficiency;Lean solution after regeneration enters lean solution kettle 6, and is taken out through lean pump 7 Go out and recycled as absorbent;Gas is flowed out after demister 8 by the gas vent on the top of lean solution kettle 6, condensed laggard Enter gas-liquid separator 9 and realize gas-liquid separation, condensate liquid returns to lean solution kettle 6, and acid gas regeneration gas is then extracted out by aspiration pump 10. Heat steam by the upper inlet of heating evaporation room 1 to be entered, condensed water is flowed out by lower exit port.

Claims (6)

1. the regenerating unit of sour gas trapping solution in a kind of power-plant flue gas, it is characterised in that including positioned at heating evaporation room (1) the built-in circulation pipe (2) at center, the bottom inlet of built-in circulation pipe (2) are connected with the rich solution pump (3) of absorption plant, top Outlet is positioned at the top of liquid distribution trough (4), liquid distribution trough (4) and equally distributed heating tube (5) in heating evaporation room (1) Entrance be connected, the outlet of heating tube (5) directly connects with lean solution kettle (6), the outlet of the upper gas of lean solution kettle (6) and gas-liquid point Entrance from device (9) is connected, and bottom liquid outlet tieback to lean solution kettle (6), the top gas of gas-liquid separator (9) is exported with taking out Air pump (10) is connected.
2. according to claim 1 in power-plant flue gas sour gas trapping solution regenerating unit, it is characterised in that it is described poor The upper gas exit of liquid kettle (6) sets demister (8).
3. according to claim 1 in power-plant flue gas sour gas trapping solution regenerating unit, it is characterised in that it is described poor The bottom lean solution outlet of liquid kettle (6) is connected by lean pump (7) through heat exchanger with the absorbent entrance of absorption plant.
4. according to claim 1 in power-plant flue gas sour gas trapping solution regenerating unit, it is characterised in that it is described plus Heat pipe (5) is vertical duct, is suspended in above lean solution kettle (6), and the top of heating tube (5) is entrance, and bottom is outlet.
5. according to claim 1 in power-plant flue gas sour gas trapping solution regenerating unit, it is characterised in that it is described plus The steam inlet of thermal evaporation room (1) is located at top, and condensation-water drain is arranged at bottom.
6. according to claim 1 in power-plant flue gas sour gas trapping solution regenerating unit, it is characterised in that it is described plus Heat pipe (5) is falling film heating pipe.
CN201720886000.5U 2017-07-20 2017-07-20 The regenerating unit of sour gas trapping solution in a kind of power-plant flue gas Active CN207056338U (en)

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CN201720886000.5U CN207056338U (en) 2017-07-20 2017-07-20 The regenerating unit of sour gas trapping solution in a kind of power-plant flue gas

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CN201720886000.5U CN207056338U (en) 2017-07-20 2017-07-20 The regenerating unit of sour gas trapping solution in a kind of power-plant flue gas

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CN207056338U true CN207056338U (en) 2018-03-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107243258A (en) * 2017-07-20 2017-10-13 中国华能集团清洁能源技术研究院有限公司 The regenerating unit and method of sour gas trapping solution in a kind of power-plant flue gas
CN109030126A (en) * 2018-07-17 2018-12-18 克拉玛依红山油田有限责任公司 Tank mouth associated gas enclosed sampling analytical equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107243258A (en) * 2017-07-20 2017-10-13 中国华能集团清洁能源技术研究院有限公司 The regenerating unit and method of sour gas trapping solution in a kind of power-plant flue gas
CN109030126A (en) * 2018-07-17 2018-12-18 克拉玛依红山油田有限责任公司 Tank mouth associated gas enclosed sampling analytical equipment

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