CN205505820U

CN205505820U - Waste gas waste heat recovery device of boiler

Info

Publication number: CN205505820U
Application number: CN201620284597.1U
Authority: CN
Inventors: 游静涛; 钟铭锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-07
Filing date: 2016-04-07
Publication date: 2016-08-24
Anticipated expiration: 2026-04-07

Abstract

The utility model discloses a waste gas waste heat recovery device of boiler, the device is including first heat transfer room, second heat transfer room and third heat transfer room, reservoir chamber and air chamber are all split into through the division board to the inner chamber of the inner chamber of first heat transfer room, the inner chamber of second heat transfer room and third heat transfer room, and install the heat transfer fin on the division board, and the both ends of heat transfer fin place respectively in reservoir chamber gentleness indoor, an air compressor is connected to the left end of the air chamber of first heat transfer room, and the 2nd gas compressor is connected to the right -hand member of the air chamber of first heat transfer room, this device is through setting up multi - stage heat exchange device, make exhaust gas of boiler carry out the heat transfer with cold water step by step, can fall to exhaust gas of boiler's final temperature very lowly, and the cold water of heat transfer is unnecessary the flow very fast also, and can get rid of at the harmful substance during the in -process of recovery waste heat is with exhaust gas of boiler, avoid exhaust gas of boiler air pollution, the present invention has higher practical value.

Description

A kind of device for recovering afterheat of waste gas in boiler

Technical field

This utility model relates to boiler waste gas processing technology field, is specially a kind of boiler waste gas waste heat recovery Device.

Background technology

Thermal power plant is carrying out thermal power generation when, and the waste gas heat loss of boiler accounts for the percentage of boiler heat loss 70 to percent eight ten, and along with the lengthening of boiler operation time, EGT will be than design Temperature high ten to percent 2 percent 30, China is thermoelectricity big country, also exist large quantity of exhaust gas temperature high, The fired power generating unit of making time length, boiler waste gas temperature reaches as high as about 200 degree, newly comes into operation Coal steam-electric plant smoke also at about 130 degree, is therefore processed by boiler waste gas temperature, can not only Reduce discharge, reduce matchmaker's consumption, additionally it is possible to be greatly improved energy utilization efficiency, but existing boiler afterheat returns The most all there is an identical problem in receiving apparatus, that is, uses single-stage heat-exchanger rig heat exchange so that with The elongated of heat-exchange time, the temperature fall of gas gradually tends to the liquid for heat exchange or the temperature of gas, If the flow rate being used for the liquid of heat exchange or gas is relatively low, then it is poor to deposit heat energy power, flue-gas temperature Cannot effectively be lowered, substantial amounts of heat losses, if flow rate is relatively big, need again to provide a large amount of The colder heat exchanging liquid of temperature or gas, increase substantial amounts of Financial cost, therefore final heat transfer effect is all Undesirable, and boiler waste gas all contains a large amount of pollutant, existing waste-heat recovery device all can not be right Boiler waste gas purifies, if it is possible to invention one uses multi-stage heat exchanger mode to carry out heat exchange and in heat exchange During the novel waste heat retracting device that boiler waste gas can also be purified just can solve the problem that problems, A kind of device for recovering afterheat of waste gas in boiler is we provided for this.

Utility model content

The purpose of this utility model is to provide a kind of device for recovering afterheat of waste gas in boiler, to solve the above-mentioned back of the body The problem proposed in scape technology.

For achieving the above object, this utility model provides following technical scheme: a kind of boiler waste gas waste heat returns Receiving apparatus, described device includes the first Heat Room, the second Heat Room and the 3rd Heat Room, and described first changes The inner chamber of the inner chamber in hot cell, the inner chamber of the second Heat Room and the 3rd Heat Room is all divided into storage by division board On hydroecium and air chamber, and division board, heat exchange fin is installed, and the two ends of heat exchange fin are respectively placed in storage The gentle indoor of hydroecium, the left end of the air chamber of described first Heat Room connects the first air compressor, and first The right-hand member of the air chamber of Heat Room connects the second gas compressor, and the port of export of described second gas compressor is even Connect the air chamber of the second Heat Room, and the right-hand member of the air chamber of the second Heat Room connects the 3rd gas compressor, institute The port of export stating the 3rd gas compressor connects the air chamber of the 3rd Heat Room, the air chamber of described 3rd Heat Room Right-hand member connect and have on exhaustor, and exhaustor air bleeding valve is installed, described first Heat Room, second change Hot cell and the 3rd Heat Room are all provided with gas temperature detection sensor, and the at the lower wall of respective air chamber One Heat Room, the second Heat Room and the 3rd Heat Room are all provided with water temperature inspection at the upper wall of respective reservoir chamber Surveying sensor, the left end of the reservoir chamber of described first Heat Room connects to have on drain pipe, and drain pipe to be installed Having drain valve, the right-hand member of the reservoir chamber of described first Heat Room connects the port of export of the second water pump, and second The entrance point of water pump connects the reservoir chamber of the second Heat Room, and the right-hand member of the reservoir chamber of described second Heat Room is even Connect the water side of the first water pump, and the entrance point of the first water pump connects the reservoir chamber of the 3rd Heat Room, described The right-hand member of the reservoir chamber of the 3rd Heat Room connects water inlet pipe, and the lower wall of the air chamber of described first Heat Room is installed In having monitoring harmful gases device and pressure transducer, and the air chamber of the first Heat Room, catalytic reaction is installed Device, the lower wall of the air chamber of described second Heat Room is provided with dust investigating and waste sludge discharge valve, and The upper end of the second Heat Room is provided with controller, and the internally installed of air chamber of described second Heat Room has absorption Device, described controller is electrically connected with the first gas compressor, gas temperature detection sensor, is harmful to Gas controlling device, pressure transducer, catalyst reaction device, the second gas compressor, adsorbent equipment, Waste sludge discharge valve, dust investigating, the 3rd gas compressor, air bleeding valve, the first water pump, the second water Pump, water temperature detection sensor and drain valve.

Preferably, described adsorbent equipment is electrostatic adsorption device.

Preferably, described division board is heat-conducting metal or thermal conductive ceramic plate.

Preferably, described heat exchange fin is copper coin.

Compared with prior art, the beneficial effects of the utility model are: this utility model is multistage by arranging Heat-exchanger rig, makes boiler waste gas carry out heat exchange with cold water step by step, it is possible to the final temperature of boiler waste gas dropped To the lowest, and the cold water of heat exchange also need not flow quickly, and can during recovery waste heat incite somebody to action Harmful substance in boiler waste gas is removed, it is to avoid boiler waste gas atmosphere pollution, therefore has the highest practicality It is worth.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation.

In figure: 1 first gas compressor, 2 first Heat Rooms, 3 gas temperatures detection sensors, 4 have Evil gas controlling device, 5 pressure transducers, 6 catalyst reaction devices, 7 second gas compressors, 8 the Two Heat Rooms, 9 adsorbent equipments, 10 waste sludge discharge valves, 11 dust investigatings, 12 the 3rd gas compressions Machine, 13 the 3rd Heat Rooms, 14 exhaustors, 15 air bleeding valves, 16 water inlet pipes, 17 first water pumps, 18 Two water pumps, 19 water temperatures detection sensors, 20 reservoir chambers, 21 drain valves, 22 drain pipies, 23 division boards, 24 heat exchange fins, 25 air chambers, 26 controllers.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, to the technology in this utility model embodiment Scheme is clearly and completely described, it is clear that described embodiment is only this utility model one Divide embodiment rather than whole embodiments.Based on the embodiment in this utility model, this area is common The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into this The scope of utility model protection.

Referring to Fig. 1, this utility model provides a kind of technical scheme: a kind of device for recovering afterheat of waste gas in boiler, Device includes the first Heat Room the 2, second Heat Room 8 and the 3rd Heat Room 13, the first Heat Room 2 interior The inner chamber of chamber, the inner chamber of the second Heat Room 8 and the 3rd Heat Room 13 is all divided into storage by division board 23 On hydroecium 20 and air chamber 25, and division board 23, heat exchange fin 24, and the two of heat exchange fin 24 are installed End is respectively placed in reservoir chamber 20 and air chamber 25, and the left end of the air chamber 25 of the first Heat Room 2 connects the One air compressor 1, and the right-hand member of the air chamber 25 of the first Heat Room 2 connects the second gas compressor 7, The port of export of the second gas compressor 7 connects the air chamber 25 of the second Heat Room 8, and the second Heat Room 8 The right-hand member of air chamber 25 connects the 3rd gas compressor 12, and the port of export of the 3rd gas compressor 12 connects the The air chamber 25 of three Heat Rooms 13, the right-hand member of the air chamber 25 of the 3rd Heat Room 13 connects exhaustor 14, And air bleeding valve 15, the first Heat Room the 2, second Heat Room 8 and the 3rd Heat Room are installed on exhaustor 14 13 all the lower wall of respective air chamber 25 be provided with gas temperature detection sensor 3, and the first Heat Room 2, Second Heat Room 8 and the 3rd Heat Room 13 are all provided with water temperature detection at the upper wall of respective reservoir chamber 20 Sensor 19, the left end of the reservoir chamber 20 of the first Heat Room 2 connects drain pipe 22, and drain pipe 22 On drain valve 21 is installed, the right-hand member of the reservoir chamber 20 of the first Heat Room 2 connects going out of the second water pump 18 Mouthful end, and the entrance point of the second water pump 18 connects the reservoir chamber 20 of the second Heat Room 8, the second Heat Room 8 The right-hand member of reservoir chamber 20 connect the water side of the first water pump 17, and the entrance point of the first water pump 17 connects The reservoir chamber 20 of the 3rd Heat Room 13, the right-hand member of the reservoir chamber 20 of the 3rd Heat Room 13 connects water inlet pipe 16, the lower wall of the air chamber 25 of the first Heat Room 2 is provided with monitoring harmful gases device 4 and pressure transducer Catalyst reaction device 6, the air chamber of the second Heat Room 8 are installed in 5, and the air chamber 25 of the first Heat Room 2 The lower wall of 25 is provided with dust investigating 11 and waste sludge discharge valve 10, and the upper end of the second Heat Room 8 Being provided with controller 26, the internally installed of the air chamber 25 of the second Heat Room 8 has adsorbent equipment 9, absorption dress Putting 9 is electrostatic adsorption device, and division board 23 is heat-conducting metal or thermal conductive ceramic plate, heat exchange fin 24 For copper coin, controller 26 is electrically connected with the first gas compressor 1, gas temperature detects sensor 3, Monitoring harmful gases device 4, pressure transducer 5, catalyst reaction device the 6, second gas compressor 7, Adsorbent equipment 9, waste sludge discharge valve 10, dust investigating the 11, the 3rd gas compressor 12, air bleeding valve 15, first water pump the 17, second water pump 18, water temperature detection sensor 19 and drain valve 21, this device exists The when of work, boiler waste gas is pressed into Heat Room at different levels by each gas compressor the most successively, Current then enter each reservoir chamber from opposite direction, owing in one-level Heat Room every during whole, temperature is relatively Low waste gas can carry out heat exchange with the current lower than its temperature all the time, therefore, it is possible to by boiler waste gas Waste heat recovery more thorough, and also can be by the dust in boiler waste gas with have during heat exchange Evil gas removes, it is possible to is substantially reduced the pollution to air, therefore has the highest practical value.

Embodiment the most of the present utility model, for the ordinary skill people of this area For Yuan, it is possible to understand that can be real to these in the case of without departing from principle of the present utility model and spirit Executing example to carry out multiple change, revise, replace and modification, scope of the present utility model is by claims And equivalent limits.

Claims

1. a device for recovering afterheat of waste gas in boiler, described device includes the first Heat Room (2), the second heat exchange Room (8) and the 3rd Heat Room (13), it is characterised in that: the inner chamber of described first Heat Room (2), The inner chamber of two Heat Rooms (8) and the inner chamber of the 3rd Heat Room (13) are all divided into by division board (23) On reservoir chamber (20) and air chamber (25), and division board (23), heat exchange fin (24) is installed, and changes The two ends of hot fin (24) are respectively placed in reservoir chamber (20) and air chamber (25), and described first changes The left end of the air chamber (25) in hot cell (2) connects the first air compressor (1), and the first Heat Room (2) The right-hand member of air chamber (25) connect the second gas compressor (7), described second gas compressor (7) The port of export connects the air chamber (25) of the second Heat Room (8), and the air chamber (25) of the second Heat Room (8) Right-hand member connect the 3rd gas compressor (12), the port of export of described 3rd gas compressor (12) connects The air chamber (25) of the 3rd Heat Room (13), the right-hand member of the air chamber (25) of described 3rd Heat Room (13) Connect to have on exhaustor (14), and exhaustor (14) and air bleeding valve (15) is installed, described first heat exchange Room (2), the second Heat Room (8) and the 3rd Heat Room (13) are all at the lower wall of respective air chamber (25) Gas temperature detection sensor (3), and the first Heat Room (2), the second Heat Room (8) and the are installed Three Heat Rooms (13) are all provided with water temperature detection sensor (19) at the upper wall of respective reservoir chamber (20), The left end of the reservoir chamber (20) of described first Heat Room (2) connects drain pipe (22), and drain pipe (22) drain valve (21), the right-hand member of the reservoir chamber (20) of described first Heat Room (2) are installed on Connect the port of export of the second water pump (18), and the entrance point of the second water pump (18) connects the second Heat Room (8) reservoir chamber (20), the right-hand member of the reservoir chamber (20) of described second Heat Room (8) connects first The water side of water pump (17), and entrance point connection the 3rd Heat Room (13) of the first water pump (17) Reservoir chamber (20), the right-hand member of the reservoir chamber (20) of described 3rd Heat Room (13) connects water inlet pipe (16), The lower wall of the air chamber (25) of described first Heat Room (2) be provided with monitoring harmful gases device (4) and Catalyst reaction device (6) is installed in pressure transducer (5), and the air chamber (25) of the first Heat Room (2), The lower wall of the air chamber (25) of described second Heat Room (8) is provided with dust investigating (11) and waste residue Drain valve (10), and the upper end of the second Heat Room (8) is provided with controller (26), described second heat exchange The internally installed of the air chamber (25) of room (8) has adsorbent equipment (9), and described controller (26) electrically connects Be connected to the first gas compressor (1), gas temperature detection sensor (3), monitoring harmful gases device (4), Pressure transducer (5), catalyst reaction device (6), the second gas compressor (7), adsorbent equipment (9), Waste sludge discharge valve (10), dust investigating (11), the 3rd gas compressor (12), air bleeding valve (15), First water pump (17), the second water pump (18), water temperature detection sensor (19) and drain valve (21).

A kind of device for recovering afterheat of waste gas in boiler the most according to claim 1, it is characterised in that: institute Stating adsorbent equipment (9) is electrostatic adsorption device.

A kind of device for recovering afterheat of waste gas in boiler the most according to claim 1, it is characterised in that: institute Stating division board (23) is heat-conducting metal or thermal conductive ceramic plate.

A kind of device for recovering afterheat of waste gas in boiler the most according to claim 1, it is characterised in that: institute Stating heat exchange fin (24) is copper coin.