Solid waste incineration waste heat utilization system in indigo production process

Abstract

The utility model discloses a solid waste incineration waste heat utilization system in indigo blue production process, which comprises an incinerator, a quenching pool, a filter, a heat exchanger, an absorption refrigeration system and a flash evaporator, ash generated after solid waste incineration enters the quenching pool, the temperature of water in the quenching pool rises, the water is filtered by the filter, and the flash evaporator is communicated with the heat exchanger. The obtained impurity-free high-temperature water enters a heat exchanger to exchange heat with replenished water, the water subjected to heat exchange enters an absorption type refrigeration system, and circulation is carried out through heat absorption and release of the lithium bromide solution in the absorption type refrigeration system; the incineration flue gas, water of the absorber and the flash evaporator form water circulation, and finally high-temperature steam is obtained. According to the system, waste heat of a solid waste incineration system in the indigo production process can be utilized, high-temperature steam is obtained and can be used subsequently, waste heat in flue gas and ash slag is recovered at the same time, energy is saved, energy consumption is reduced, and the system is environment-friendly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the waste heat utilization technical field, and specifically points to a kind of solid waste incineration waste heat utilization system in indigo production process. BACKGROUND

[0002] With the continuous development of global textile industry, the demand of indigo continues to grow, and the production process of natural indigo is complex and expensive, while the process of chemical synthesis indigo is simpler, color is bright and lasting, greatly promotes the development of dye industry. A large amount of solid waste is generated in the process of chemical synthesis indigo, and the solid waste needs to be treated after combustion. The flue gas and ash produced by solid waste combustion have high temperature, and the temperature of these flue gas and ash is usually directly discharged in the existing process, and these energy is not reasonably utilized, causing energy waste and increasing energy consumption. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a kind of solid waste incineration waste heat utilization system in indigo production process, and the system recycles and utilizes the heat generated by flue gas and ash temperature through waste heat recovery system, saves energy and reduces energy consumption.

[0004] To achieve the above purpose, the utility model solid waste incineration waste heat utilization system in indigo production process includes incinerator, quenching tank, filter, heat exchanger, absorption refrigeration system, flash evaporator, and the heat exchanger includes first heat exchanger, second heat exchanger and third heat exchanger. The output pipeline I of quenching tank is connected with filter, and the output pipeline of filter is connected with pump and first heat exchanger in turn. The first heat exchanger includes two output pipelines, one of which is connected with absorption refrigeration system, and the other is connected with third heat exchanger. The third heat exchanger includes two output pipelines, one of which is connected with flash evaporator, and the other is connected with incinerator. The flash evaporator includes two output pipelines, one of which is connected with compressor, and the other is connected with absorption refrigeration system through pump. The incinerator is provided with flue gas discharge pipeline above, and the flue gas discharge pipeline is connected with second heat exchanger through fan. The second heat exchanger includes two output pipelines, one of which is connected with third heat exchanger, and the other is connected with flash evaporator.

[0005] As a further scheme of the present application: the absorption refrigeration system comprises a generator, a condenser, an evaporator, an absorber, a solution heat exchanger, the generator comprises three output pipelines, the first output pipeline is connected with the evaporator, the second output pipeline is connected with the condenser, the third output pipeline is connected with the solution heat exchanger after a pump, one output pipeline of the solution heat exchanger is connected with the absorber, the absorber comprises two output pipelines, one of the output pipelines is connected with the second heat exchanger, the other output pipeline is connected with the solution heat exchanger, the other output pipeline of the solution heat exchanger is connected with the generator through a valve; the condenser comprises two output pipelines, one of the output pipelines is connected with the outside, the other output pipeline is connected with the evaporator through a pump and a valve in sequence, the evaporator comprises two output pipelines, one of the evaporator output pipelines is connected with the water quenching tank, the other output pipeline is connected with the absorber.

[0006] As a further scheme of the present application: the output pipeline II of the first heat exchanger is connected with the generator in the absorption refrigeration system; the output pipeline VII of the flash evaporator is connected with the absorber in the absorption refrigeration system through a pump.

[0007] As a further scheme of the present application: the absorption refrigeration system is a second type absorption heat pump, the generator, the absorber and the solution heat exchanger contain lithium bromide aqueous solution, and the lithium bromide aqueous solution contains a refrigerant.

[0008] As a further scheme of the present application: the high-temperature flue gas is discharged in the flue gas discharge pipeline; the high-temperature water is transported in the output pipeline I; the first heat exchanger is provided with a water supplement input channel; and the condenser is provided with a cooling water input channel.

[0009] Compared with the prior art, the present application has the following beneficial effects: the ash generated after solid waste incineration enters the water quenching tank, the water temperature in the water quenching tank is increased, and the high-temperature water without impurities obtained after filtration by the filter is heat-exchanged with the water supplement in the heat exchanger, and the heat-exchanged water enters the absorption refrigeration system and circulates through the heat absorption and release of the lithium bromide solution in the absorption refrigeration system; the incineration flue gas, the water of the absorber and the flash evaporator form a water circulation, and finally high-temperature steam is obtained, which is convenient for subsequent use. The present application can utilize the waste heat of the solid waste incineration system in the indigo production process, obtain high-temperature steam, and recycle the waste heat in the flue gas and ash, save energy, reduce energy consumption, and be friendly to the environment. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a structure schematic view of the solid waste incineration waste heat utilization system in the indigo production process of the present application.

[0011] In the figure: 1, incinerator, 102, flue gas discharge pipeline, 103, output pipeline V, 2, quenching tank, 201, output pipeline I, 3, filter, 4, first heat exchanger, 401, make-up water input channel, 402, output pipeline II, 403, output pipeline III, 5, generator, 501, first output pipeline, 502, second output pipeline, 503, third output pipeline, 6, condenser, 601, cooling water input channel, 7, evaporator, 701, evaporator output pipeline, 8, absorber, 801, output pipeline VII, 9, exchanger, 10, absorption refrigeration system, 11, second heat exchanger, 1101, output pipeline IX, 1102, output pipeline VIII, 12, third heat exchanger, 1201, output pipeline IV, 13, flash evaporator, 1301, output pipeline VI, DETAILED DESCRIPTION

[0012] The utility model will be further described below with reference to the drawings.

[0013] As Figure 1 shown, the indigo production process solid waste incineration waste heat utilization system, including incinerator 1, quenching tank 2, filter 3, heat exchanger, absorption refrigeration system 10, flash evaporator 13, heat exchanger includes first heat exchanger 4, second heat exchanger 11, third heat exchanger 12;Quenching tank 2's output pipeline I 201 is connected with filter 3, and the output pipeline of filter 3 is connected pump, first heat exchanger 4 in proper order, and first heat exchanger 4 includes two output pipelines, wherein one output pipeline II 402 is connected with absorption refrigeration system 10, and the other output pipeline III 403 is connected with third heat exchanger 12, and third heat exchanger 12 includes two output pipelines, wherein one output pipeline IV 1201 is connected with flash evaporator 13, and the other output pipeline V 103 is connected with incinerator 1;Flash evaporator 13 includes two output pipelines, wherein one output pipeline VI 1301 is connected with compressor, and the other output pipeline VII 801 is connected with absorption refrigeration system 10 through pump;The top of incinerator 1 is provided with flue gas discharge pipeline 102, and flue gas discharge pipeline 102 is connected with second heat exchanger 11 through fan, and second heat exchanger 11 includes two output pipelines, wherein one output pipeline VIII 1102 is connected with third heat exchanger 12, and the other output pipeline IX 1101 is connected with flash evaporator 13.

[0014] The absorption refrigeration system 10 comprises a generator 5, a condenser 6, an evaporator 7, an absorber 8, a solution heat exchanger 9, the generator 5 comprises three output pipes, a first output pipe 501 is connected with the evaporator 7, a second output pipe 502 is connected with the condenser 6, and a third output pipe 503 is connected with the solution heat exchanger 9 after a pump, one output pipe of the solution heat exchanger 9 is connected with the absorber 8, the absorber 8 comprises two output pipes, one of which is connected with the second heat exchanger 11, and the other is connected with the solution heat exchanger 9, and the other output pipe of the solution heat exchanger 9 is connected with the generator 5 through a valve; the condenser 6 comprises two output pipes, one of which is connected with the outside, and the other is connected with the evaporator 7 in sequence through a pump and a valve, and the evaporator 7 comprises two output pipes, one of which is connected with the water quenching tank 2, and the other is connected with the absorber 8.

[0015] The output pipe II 402 of the first heat exchanger 4 is connected with the generator 5 in the absorption refrigeration system 10, and the output pipe VII 801 of the flash evaporator 13 is connected with the absorber 8 in the absorption refrigeration system 10 through a pump.

[0016] The absorption refrigeration system 10 is a second type of absorption heat pump, the generator 5, the absorber 8 and the solution heat exchanger 9 contain lithium bromide aqueous solution, and the lithium bromide aqueous solution contains refrigerant.

[0017] The high-temperature flue gas is discharged from the flue gas discharge pipe 102, and the high-temperature water is transported from the output pipe I 201, the first heat exchanger 4 is provided with a water supplement input channel 401, and the condenser 6 is provided with a cooling water input channel 601.

[0018] The utility model discloses a solid waste incineration system, which comprises a solid waste incineration device, a water quenching device, a heat exchanger, a generator, a condenser, an absorber, a filter, a pump, a solution heat exchanger, a flash evaporator and an evaporator.

[0019] The water flowed out from the flash evaporator 13 is absorbed heat by the absorber 8 through the output pipe VII801 and then enters the heat exchanger 11 through the output pipe of the absorber 8; the high-temperature flue gas exchanges heat with the water in the heat exchanger 11, the high-temperature flue gas releases heat and the temperature is reduced, the water absorbs heat and the temperature is increased, and then the water enters the flash evaporator 13 through the output pipe IX1101; a part of the water in the flash evaporator 13 is converted into water vapor and discharged through the output pipe VI1301, the water vapor is compressed and the temperature is increased for subsequent use; the cooled flue gas enters the heat exchanger 12 through the output pipe VIII1102 of the heat exchanger 11 to continue releasing heat, and then the cooled flue gas is returned to the incinerator 1 through the output pipe V103 and enters the subsequent process through the chimney; the make-up water output from the output pipe III403 of the first heat exchanger 4 is heated in the second heat exchanger 12, and then the heated water enters the flash evaporator 13 through the output pipe IV1201 to supplement the required moisture.

[0020] The utility model can utilize waste heat of the solid waste incineration system in the indigo production process, obtain high-temperature steam, and recycle waste heat in flue gas and ash, reduce energy consumption, and be friendly to the environment.

Claims

1. A system for utilizing waste incineration residual heat in a solid waste incineration process, characterized by, The application relates to a waste incineration system, which comprises a waste incinerator (1), a quenching tank (2), a filter (3), a heat exchanger, an absorption refrigeration system (10) and a flash evaporator (13), wherein the heat exchanger comprises a first heat exchanger (4), a second heat exchanger (11) and a third heat exchanger (12); the output pipeline I (201) of the quenching tank (2) is connected with the filter (3), the output pipeline of the filter (3) is sequentially connected with a pump and the first heat exchanger (4), the first heat exchanger (4) comprises two output pipelines, one of which is the output pipeline II (402) connected with the absorption refrigeration system (10), and the other is the output pipeline III (403) connected with the third heat exchanger (12), the third heat exchanger (12) comprises two output pipelines, one of which is the output pipeline IV (1201) connected with the flash evaporator (13), and the other is the output pipeline V (103) connected with the waste incinerator (1); the flash evaporator (13) comprises two output pipelines, one of which is the output pipeline VI (1301) connected with a compressor, and the other is the output pipeline VII (801) connected with the absorption refrigeration system (10) through a pump; the waste incinerator (1) is provided with a flue gas discharge pipeline (102) above the waste incinerator (1), the flue gas discharge pipeline (102) is connected with the second heat exchanger (11) through a fan, and the second heat exchanger (11) comprises two output pipelines, one of which is the output pipeline VIII (1102) connected with the third heat exchanger (12), and the other is the output pipeline IX (1101) connected with the flash evaporator (13).

2. The system according to claim 1, wherein The absorption refrigeration system (10) comprises a generator (5), a condenser (6), an evaporator (7), an absorber (8) and a solution heat exchanger (9), the generator (5) comprises three output pipelines, one of which is the first output pipeline (501) connected with the evaporator (7), one is the second output pipeline (502) connected with the condenser (6), and one is the third output pipeline (503) connected with the solution heat exchanger (9) after being connected with a pump, one output pipeline of the solution heat exchanger (9) is connected with the absorber (8), the absorber (8) comprises two output pipelines, one of which is connected with the second heat exchanger (11), and the other is connected with the solution heat exchanger (9), the other output pipeline of the solution heat exchanger (9) is connected with the generator (5) through a valve, the condenser (6) comprises two output pipelines, one of which is connected with the outside, and the other is sequentially connected with the evaporator (7) through a pump and a valve, the evaporator (7) comprises two output pipelines, one of which is the evaporator output pipeline (701) connected with the quenching tank (2), and the other is connected with the absorber (8).

3. The system according to claim 2, wherein The output pipeline II (402) of the first heat exchanger (4) is connected with the generator (5) in the absorption refrigeration system (10); the output pipeline VII (801) of the flash evaporator (13) is connected with the absorber (8) in the absorption refrigeration system (10) through a pump.

4. The system for utilizing waste heat from incineration of solid waste in indigo production processes according to claim 2, characterized in that, The absorption refrigeration system (10) is a second type of absorption heat pump, the generator (5), the absorber (8) and the solution heat exchanger (9) contain lithium bromide aqueous solution, and the lithium bromide aqueous solution contains refrigerant.

5. The system according to claim 1 or 2, wherein The flue gas discharge pipeline (102) discharges high-temperature flue gas; the output pipeline I (201) conveys high-temperature water; the first heat exchanger (4) is provided with a water supplement input channel (401); and the condenser (6) is provided with a cooling water input channel (601).

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