CN217809269U - Water gas production heat recovery system - Google Patents
Water gas production heat recovery system Download PDFInfo
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- CN217809269U CN217809269U CN202221782739.9U CN202221782739U CN217809269U CN 217809269 U CN217809269 U CN 217809269U CN 202221782739 U CN202221782739 U CN 202221782739U CN 217809269 U CN217809269 U CN 217809269U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a water gas production heat recovery system belongs to heat recovery's technical field. The system comprises a water-gas steam generator, a plurality of gas-liquid separators, a raw gas preheater, a shift converter and a plurality of low-pressure steam generators; the water-gas steam generator is connected with the first gas-liquid separator; the top of the first gas-liquid separator is connected with a shift converter through a pipeline, and the pipeline passes through a feed gas preheater; the shift converter is connected with the steam superheater; the steam superheater is connected with the feed gas preheater; the feed gas preheater is connected with the first low-pressure steam generator; the first low-pressure steam generator is connected with the second gas-liquid separator; the top of the gas-liquid separator II is connected with a low-pressure steam generator II; and the second low-pressure steam generator is connected with the third gas-liquid separator. The utility model can recover heat, which not only solves the problem of large consumption of circulating water; meanwhile, steam is byproduct, the coal consumption is reduced, and the production cost is reduced.
Description
Technical Field
The utility model relates to a heat recovery's technical field, concretely relates to water gas production heat recovery system.
Background
The water-coal-slurry and oxygen are subjected to partial oxidation-reduction reaction in the Texaco gasifier to generate water gas, the water gas is washed to remove ash and then is sent to a conversion process, and the temperature of the time-varying converted gas is still up to 230 ℃ after the water gas is subjected to sulfur-tolerant conversion. The normal process is to directly send high-temperature gas to the subsequent working procedure, and the gas carries a large amount of heat energy and needs to be cooled by using cooling water. This not only increases the amount of subsequent cooling water, but also causes energy loss and waste.
SUMMERY OF THE UTILITY MODEL
The problem of heat can't effectively be utilized in to prior art well water gas, the utility model provides a water gas production heat recovery system to solve above-mentioned technical problem. The utility model can recover heat, which solves the problems of backward movement of heat and large consumption of circulating water; meanwhile, steam is byproduct, the coal consumption is reduced, the production cost is reduced, and the economic benefit of enterprises is further improved.
A water gas production heat recovery system comprises a water gas steam generator, a plurality of gas-liquid separators, a feed gas preheater, a shift converter and a plurality of low-pressure steam generators; the water-gas steam generator is connected with the first gas-liquid separator; the top of the first gas-liquid separator is connected with a shift converter through a pipeline, and the pipeline passes through a feed gas preheater; the shift converter is connected with the steam superheater; the steam superheater is connected with the feed gas preheater; the feed gas preheater is connected with the first low-pressure steam generator; the first low-pressure steam generator is connected with the second gas-liquid separator; the top of the second gas-liquid separator is connected with a second low-pressure steam generator; the low-pressure steam generator II is connected with the gas-liquid separator III; the top of the gas-liquid separator III is sequentially connected with a desalted water preheater and a water cooler; and the water cooler is connected with the gas-liquid separator IV.
Further, the bottom of the first gas-liquid separator is connected with a third gas-liquid separator, and the bottom of the second gas-liquid separator is connected with the third gas-liquid separator.
Furthermore, a pipeline is arranged at the bottom of the gas-liquid separator III and leads to a gasification section. And liquid separated from the gas-liquid separator III enters a gasification section again to be used as raw materials.
Further, the bottom of the gas-liquid separator III is connected with a low-temperature condensate preheater; and the bottom of the gas-liquid separator IV is connected with a low-temperature condensate preheater.
Further, the low-temperature condensate preheater is connected with the stripping tower; the top of the stripping tower is connected with a desalted water cooler through a pipeline, and the pipeline penetrates through a low-temperature condensate preheater; and the desalted water cooler is connected with the gas-liquid separator V.
The water-gas steam generator generates 2.5MPa steam; the first low-pressure steam generator generates 1.1MPa steam; the second low-pressure steam generator generates 0.50MPa steam.
The utility model discloses a theory of operation does: the method comprises the following steps that (1) crude synthesis gas from a gasification section passes through a water-gas steam generator to generate steam of 2.5MPa, then enters a gas-liquid separator I to separate out condensate, about 30-60% of the crude synthesis gas enters a raw material gas preheater, is preheated by conversion gas from a conversion furnace and then enters the conversion furnace to undergo sulfur-tolerant conversion, the converted gas recovers heat through a steam superheater and the raw material gas preheater, then is converged with synthesis gas which does not participate in conversion reaction and enters a low-pressure steam generator I to generate low-pressure steam of 1.1MPa, then enters a gas-liquid separator II to separate out condensate, the gas enters a low-pressure steam generator II to generate low-pressure steam of 0.50MPa, the temperature is further reduced, the gas enters a gas-liquid separator III to separate out process condensate, and then sequentially enters a desalted water preheater and a water cooler; and when the temperature of the gas is reduced to about 40 ℃, the gas enters a gas-liquid separator IV, and the synthetic gas from which the condensate is removed is sent to a low-temperature methanol washing process.
The utility model has the advantages that:
the utility model can recover heat, which not only solves the problems of backward movement of heat and large consumption of circulating water; meanwhile, steam is byproduct, the coal consumption is reduced, the production cost is reduced, and the economic benefit of an enterprise is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a system structure according to embodiment 2 of the present invention.
In the figure, 1-water gas steam generator, 2-gas-liquid separator I, 3-raw gas preheater, 4-shift converter, 5-steam superheater, 6-low pressure steam generator I, 7-gas-liquid separator II, 8-low pressure steam generator II, 9-gas-liquid separator III, 10-desalted water preheater, 11-water cooler, 12-gas-liquid separator IV, 13-low temperature condensate preheater, 14-stripping tower, 15-desalted water cooler and 16-gas-liquid separator V.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Example 1
A water gas production heat recovery system comprises a water gas steam generator 1, four gas-liquid separators, a raw gas preheater 3, a shift converter 4 and two low-pressure steam generators; the water gas steam generator 1 is connected with the first gas-liquid separator 2; the top of the first gas-liquid separator 2 is connected with a shift converter 4 through a pipeline, and the pipeline passes through a feed gas preheater 3; the shift converter 4 is connected with a steam superheater 5; the steam superheater 5 is connected with the feed gas preheater 3; the feed gas preheater 3 is connected with the first low-pressure steam generator 6; the first low-pressure steam generator 6 is connected with the second gas-liquid separator 7; the top of the second gas-liquid separator 7 is connected with a second low-pressure steam generator 8; the second low-pressure steam generator 8 is connected with a third gas-liquid separator 9; the top of the gas-liquid separator III 9 is sequentially connected with a desalted water preheater 10 and a water cooler 11; the water cooler 11 is connected with a gas-liquid separator four 12.
Example 2
A water gas production heat recovery system comprises a water gas steam generator 1, five gas-liquid separators, a feed gas preheater 3, a shift converter 4 and two low-pressure steam generators; the water-gas steam generator 1 is connected with the first gas-liquid separator 2; the top of the first gas-liquid separator 2 is connected with a shift converter 4 through a pipeline, the pipeline passes through a raw gas preheater 3, and the bottom of the first gas-liquid separator 2 is connected with a third gas-liquid separator 9; the shift converter 4 is connected with a steam superheater 5; the steam superheater 5 is connected with the feed gas preheater 3; the feed gas preheater 3 is connected with the first low-pressure steam generator 6; the first low-pressure steam generator 6 is connected with the second gas-liquid separator 7; the top of the second gas-liquid separator 7 is connected with a second low-pressure steam generator 8, and the bottom of the second gas-liquid separator 7 is connected with a third gas-liquid separator 9; the second low-pressure steam generator 8 is connected with a third gas-liquid separator 9; the top of the third gas-liquid separator 9 is sequentially connected with a desalted water preheater 10 and a water cooler 11, and the bottom of the third gas-liquid separator 9 is provided with a pipeline leading to a gasification working section; the water cooler 11 is connected with a gas-liquid separator IV 12; the bottom of the gas-liquid separator III 9 is connected with a low-temperature condensate preheater 13; the bottom of the gas-liquid separator IV 12 is connected with a low-temperature condensate preheater 13; the low-temperature condensate preheater 13 is connected with the stripping tower 14; the top of the stripping tower 14 is connected with a desalted water cooler 15 through a pipeline, and the pipeline penetrates through a low-temperature condensate preheater 13; the desalted water cooler 15 is connected to the gas-liquid separator five 16.
The water-gas steam generator generates 2.5MPa steam; the first low-pressure steam generator generates 1.1MPa steam; the second low-pressure steam generator generates 0.50MPa steam.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A water gas production heat recovery system is characterized by comprising a water gas steam generator, a plurality of gas-liquid separators, a raw gas preheater, a shift converter and a plurality of low-pressure steam generators; the water-gas steam generator is connected with the first gas-liquid separator; the top of the first gas-liquid separator is connected with a shift converter through a pipeline, and the pipeline passes through a feed gas preheater; the shift converter is connected with the steam superheater; the steam superheater is connected with the feed gas preheater; the feed gas preheater is connected with the first low-pressure steam generator; the first low-pressure steam generator is connected with the second gas-liquid separator; the top of the second gas-liquid separator is connected with a second low-pressure steam generator; the low-pressure steam generator II is connected with the gas-liquid separator III; the top of the gas-liquid separator III is sequentially connected with a desalted water preheater and a water cooler; and the water cooler is connected with the gas-liquid separator IV.
2. The water gas production heat recovery system of claim 1, wherein the bottom of the first gas-liquid separator is connected to a third gas-liquid separator.
3. The water gas production heat recovery system of claim 1, wherein the bottom of the second gas-liquid separator is connected to the third gas-liquid separator.
4. The water gas production heat recovery system of claim 1, wherein the bottom of the gas-liquid separator three is provided with a pipeline leading to the gasification section.
5. The water gas production heat recovery system of claim 1, wherein the bottom of the gas-liquid separator three is connected to a low temperature condensate preheater.
6. The water gas production heat recovery system of claim 1, wherein the bottom of the gas-liquid separator four is connected to a low temperature condensate preheater.
7. The water gas production heat recovery system of claim 5, wherein the low temperature condensate preheater is coupled to a stripper column; the top of the stripping tower is connected with a desalted water cooler through a pipeline, and the pipeline penetrates through a low-temperature condensate preheater; and the desalted water cooler is connected with the gas-liquid separator V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221782739.9U CN217809269U (en) | 2022-07-11 | 2022-07-11 | Water gas production heat recovery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221782739.9U CN217809269U (en) | 2022-07-11 | 2022-07-11 | Water gas production heat recovery system |
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| CN217809269U true CN217809269U (en) | 2022-11-15 |
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| CN202221782739.9U Active CN217809269U (en) | 2022-07-11 | 2022-07-11 | Water gas production heat recovery system |
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2022
- 2022-07-11 CN CN202221782739.9U patent/CN217809269U/en active Active
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