CN205505046U - Thermal power residual heat from flue gas system - Google Patents

Abstract

The utility model discloses a thermal power residual heat from flue gas system, including boiler, smoke treatment device, effluent treatment plant, water supply installation and steam -turbine plant, the end of intaking of steam -turbine plant is connected to the play water end (W. E. ) of boiler, and the end of intaking of the play water end (W. E. ) of steam -turbine plant connection boiler, effluent treatment plant's the end of intaking is connected to the wastewater effluent end of boiler, the device is through the compound mode of multi - stage heat exchange device and flue gas pollution treatment device, can collect the waste heat in the flue gas simultaneously and purify the flue gas, consequently, the emission has significantly reduced, the pollution of thermal power station to the environment has been reduced, and heat exchange efficiency is high, can make full use of flue gas waste heat, and can make the flue -gas temperature tend to normal atmospheric temperature through multistage cooling, along with cool time's extension when having solved the single -stage cooling, the temperature risees, the unable effective problem that reduces of flue -gas temperature, consequently, possess very high practical value.

Description

A kind of thermal power generation flue gas waste heat recovery system

Technical field

This utility model relates to thermal power generating technology field, is specially a kind of thermal power generation flue gas waste heat recovery system.

Background technology

nullThermal power plant is carrying out thermal power generation when，The heat loss due to exhaust gas of boiler accounts for eight ten ten to percent 7 the percent of boiler heat loss，And the lengthening along with boiler operation time，Exhaust gas temperature will be than design temperature three ten high ten to percent 2 percent，China is thermoelectricity big country，There is a large amount of high fume temperature、The fired power generating unit of making time length，Exhaust gas temperature reaches as high as about 200 degree，The exhaust gas temperature newly come into operation is also at about 130 degree，Therefore coal steam-electric plant smoke is processed，Discharge can not only be reduced，Reduce matchmaker's consumption，Energy utilization efficiency can also be greatly improved，If able to coal steam-electric plant smoke can be processed by invention one，It is substantially reduced its pollution to environment，And can efficient recovery fume afterheat realize high efficiency of energy utilize Novel flue gas residual neat recovering system just can solve the problem that problems，A kind of thermal power generation flue gas waste heat recovery system is we provided for this.

Utility model content

The purpose of this utility model is to provide a kind of thermal power generation flue gas waste heat recovery system, with the problem solving to propose in above-mentioned background technology.

nullFor achieving the above object，This utility model following technical scheme of offer: a kind of thermal power generation flue gas waste heat recovery system，Including boiler、Flue gas processing device、Wastewater treatment equipment、Water supply installation and steam-turbine plant，The water side of described boiler connects the water inlet end of steam-turbine plant，And the water side of steam-turbine plant connects the water inlet end of boiler，The wastewater effluent end of described boiler connects the water inlet end of wastewater treatment equipment，The fume emission end of described boiler connects the air inlet pipe of flue gas processing device，Described water supply installation connects the water inlet end of flue gas processing device respectively by water pipe、The water inlet end of boiler and the water inlet end of steam-turbine plant，The water side of described flue gas processing device connects the water inlet end of boiler，And the wastewater effluent end of flue gas processing device connects the water inlet end of wastewater treatment equipment，Described flue gas processing device includes the first heat exchange box and Multi-stage heat-exchanging device，And first the inner chamber of heat exchange box gas-liquid mixed treatment box is installed，And it is filled with treatment fluid in gas-liquid mixed treatment box，The upper end of described gas-liquid mixed treatment box is connected by water pipe catalytic adsorption case，The lower end of described gas-liquid mixed treatment box is fixedly connected with the air inlet pipe penetrating the first heat exchange box lower end，And the upper end of catalytic adsorption case is fixedly connected with the connecting tube penetrating the first heat exchange box upper end，The lower end of described gas-liquid mixed treatment box is connected by pipeline has waste liquid to detach device，And waste liquid detaches the left end of device and is provided with wastewater effluent end，The inside and outside wall of described gas-liquid mixed treatment box is provided with heat exchange fin，And the outer wall of catalytic adsorption case is provided with heat exchange fin，The array of interior cavities of described catalytic adsorption case is provided with porous and processes plate，And the end of connecting tube connects Multi-stage heat-exchanging device，The lower end of described Multi-stage heat-exchanging device is provided with escape pipe，And the inner chamber of Multi-stage heat-exchanging device is partitioned at least three Heat Room unit by thermal insulation board，The right-hand member of described Heat Room unit is provided with water inlet pipe and outlet pipe，The inner chamber of described Heat Room unit is installed by welding with heat exchange bend pipe，And the heat exchange bend pipe in each Heat Room unit is from top to bottom sequentially connected in series，And the upper end being in heat exchange bend pipe topmost is connected with connecting tube，And the lower end being in the heat exchange bend pipe of bottom is connected with escape pipe.

Preferably, the upper end of described porous process plate is provided with catalyst reaction layer.

Preferably, described thermal insulation board is thermal insulation ceramics plate, and the two ends up and down of thermal insulation board all scribble underwater paint.

Preferably, described heat exchange bend pipe and connecting tube are thin metallic tubd, and the outer end of connecting tube is provided with heat-barrier coating.

Compared with prior art, the beneficial effects of the utility model are: this utility model passes through Multi-stage heat-exchanging device and the compound mode of smoke pollution processing means, the waste heat in flue gas can be collected simultaneously and flue gas is purified, therefore discharge is greatly reduced, improve efficiency of fire coal, reduce thermal power station's pollution to environment, and heat exchange efficiency is high, fume afterheat can be made full use of, and flue-gas temperature can be made to tend to room temperature by multistage cooling, along with the lengthening of cool time when solving single stage cooling, water temperature raises, the problem that flue-gas temperature cannot effectively reduce, therefore the highest practical value is had.

Accompanying drawing explanation

Fig. 1 is this utility model system block diagram；

Fig. 2 is the cross-sectional schematic of this utility model flue gas processing device.

In figure: 1 steam-turbine plant, 2 flue gas processing devices, 3 wastewater treatment equipments, 4 boilers, 5 water supply installations, 6 waste liquids detach device, 7 air inlet pipe, 8 gas-liquid mixed treatment boxes, 9 escape pipes, 10 Multi-stage heat-exchanging devices, 11 thermal insulation boards, 12 Heat Room unit, 13 water inlet pipes, 14 outlet pipes, 15 heat exchange bend pipes, 16 porous process plate, 17 catalytic adsorption casees, 18 heat exchange fins, 19 first heat exchange box, 20 connecting tubes, 21 wastewater effluent ends.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.

nullRefer to Fig. 1-2，A kind of technical scheme of this utility model offer: a kind of thermal power generation flue gas waste heat recovery system，Including boiler 4、Flue gas processing device 2、Wastewater treatment equipment 3、Water supply installation 5 and steam-turbine plant 1，The water side of boiler 4 connects the water inlet end of steam-turbine plant 1，And the water side of steam-turbine plant 1 connects the water inlet end of boiler 4，The wastewater effluent end of boiler 4 connects the water inlet end of wastewater treatment equipment 3，The fume emission end of boiler 4 connects the air inlet pipe 7 of flue gas processing device 2，Water supply installation 5 connects the water inlet end of flue gas processing device 2 respectively by water pipe、The water inlet end of boiler 4 and the water inlet end of steam-turbine plant 1，The water side of flue gas processing device 2 connects the water inlet end of boiler 4，And the wastewater effluent end 21 of flue gas processing device 2 connects the water inlet end of wastewater treatment equipment 3，Flue gas processing device 2 includes the first heat exchange box 19 and Multi-stage heat-exchanging device 10，And first the inner chamber of heat exchange box 19 gas-liquid mixed treatment box 8 is installed，And it is filled with treatment fluid in gas-liquid mixed treatment box 8，The upper end of gas-liquid mixed treatment box 8 is connected by water pipe catalytic adsorption case 17，The lower end of gas-liquid mixed treatment box 8 is fixedly connected with the air inlet pipe 7 penetrating the first heat exchange box 19 lower end，And the upper end of catalytic adsorption case 17 is fixedly connected with the connecting tube 20 penetrating the first heat exchange box 19 upper end，The lower end of gas-liquid mixed treatment box 8 is connected by pipeline has waste liquid to detach device 6，And waste liquid detaches the left end of device 6 and is provided with wastewater effluent end 21，The inside and outside wall of gas-liquid mixed treatment box 8 is provided with heat exchange fin 18，And the outer wall of catalytic adsorption case 17 is provided with heat exchange fin 18，The array of interior cavities of catalytic adsorption case 17 is provided with porous and processes plate 16，And the end of connecting tube 20 connects Multi-stage heat-exchanging device 10，Porous processes the upper end of plate 16 and is provided with catalyst reaction layer，The lower end of Multi-stage heat-exchanging device 10 is provided with escape pipe 9，And the inner chamber of Multi-stage heat-exchanging device 10 is partitioned at least three Heat Room unit 12 by thermal insulation board 11，Thermal insulation board 11 is thermal insulation ceramics plate，And the two ends up and down of thermal insulation board 11 all scribble underwater paint，The right-hand member of Heat Room unit 12 is provided with water inlet pipe 13 and outlet pipe 14，The inner chamber of Heat Room unit 12 is installed by welding with heat exchange bend pipe 15，And the heat exchange bend pipe 15 in each Heat Room unit 12 is from top to bottom sequentially connected in series，And the upper end being in heat exchange bend pipe 15 topmost is connected with connecting tube 20，And the lower end being in the heat exchange bend pipe 15 of bottom is connected with escape pipe 9，Heat exchange bend pipe 15 and connecting tube 20 are thin metallic tubd，And the outer end of connecting tube 20 is provided with heat-barrier coating，Native system processes the compound mode of structure by Multi-stage heat-exchanging device 10 and smoke pollution，The waste heat in flue gas can be collected simultaneously and flue gas is purified，Therefore the discharge of harmful gas is greatly reduced，Improve efficiency of fire coal，Reduce thermal power station's pollution to environment，And heat exchange efficiency is high，Fume afterheat can be made full use of，And by flue-gas temperature can be made after multistage cooling to tend to room temperature，Along with the lengthening of cool time when solving single stage cooling，Water temperature raises，The problem that flue-gas temperature cannot effectively reduce，Therefore the highest practical value is had.

Embodiment the most of the present utility model, for the ordinary skill in the art, being appreciated that in the case of without departing from principle of the present utility model and spirit and these embodiments can carry out multiple change, revise, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.

Claims (1)

1. null1. a thermal power generation flue gas waste heat recovery system，Including boiler (4)、Flue gas processing device (2)、Wastewater treatment equipment (3)、Water supply installation (5) and steam-turbine plant (1)，The water side of described boiler (4) connects the water inlet end of steam-turbine plant (1)，And the water side of steam-turbine plant (1) connects the water inlet end of boiler (4)，The wastewater effluent end of described boiler (4) connects the water inlet end of wastewater treatment equipment (3)，It is characterized in that: the fume emission end of described boiler (4) connects the air inlet pipe (7) of flue gas processing device (2)，Described water supply installation (5) connects the water inlet end of flue gas processing device (2) respectively by water pipe、The water inlet end of boiler (4) and the water inlet end of steam-turbine plant (1)，The water side of described flue gas processing device (2) connects the water inlet end of boiler (4)，And the wastewater effluent end (21) of flue gas processing device (2) connects the water inlet end of wastewater treatment equipment (3)，Described flue gas processing device (2) includes the first heat exchange box (19) and Multi-stage heat-exchanging device (10)，And first the inner chamber of heat exchange box (19) gas-liquid mixed treatment box (8) is installed，And it is filled with treatment fluid in gas-liquid mixed treatment box (8)，The upper end of described gas-liquid mixed treatment box (8) is connected by water pipe catalytic adsorption case (17)，The lower end of described gas-liquid mixed treatment box (8) is fixedly connected with the air inlet pipe (7) penetrating the first heat exchange box (19) lower end，And the upper end of catalytic adsorption case (17) is fixedly connected with the connecting tube (20) penetrating the first heat exchange box (19) upper end，The lower end of described gas-liquid mixed treatment box (8) is connected by pipeline has waste liquid to detach device (6)，And waste liquid detaches the left end of device (6) and is provided with wastewater effluent end (21)，The inside and outside wall of described gas-liquid mixed treatment box (8) is provided with heat exchange fin (18)，And the outer wall of catalytic adsorption case (17) is provided with heat exchange fin (18)，The array of interior cavities of described catalytic adsorption case (17) is provided with porous and processes plate (16)，And the end of connecting tube (20) connects Multi-stage heat-exchanging device (10)，The lower end of described Multi-stage heat-exchanging device (10) is provided with escape pipe (9)，And the inner chamber of Multi-stage heat-exchanging device (10) is partitioned at least three Heat Room unit (12) by thermal insulation board (11)，The right-hand member of described Heat Room unit (12) is provided with water inlet pipe (13) and outlet pipe (14)，The inner chamber of described Heat Room unit (12) is installed by welding with heat exchange bend pipe (15)，And the heat exchange bend pipe (15) in each Heat Room unit (12) is from top to bottom sequentially connected in series，And the upper end being in heat exchange bend pipe (15) topmost is connected with connecting tube (20)，And the lower end being in the heat exchange bend pipe (15) of bottom is connected with escape pipe (9).