CN117138536A - NRG regeneration gas drying system - Google Patents

NRG regeneration gas drying system Download PDF

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Publication number
CN117138536A
CN117138536A CN202311166652.8A CN202311166652A CN117138536A CN 117138536 A CN117138536 A CN 117138536A CN 202311166652 A CN202311166652 A CN 202311166652A CN 117138536 A CN117138536 A CN 117138536A
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China
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valve
tower
drying
pipeline
regeneration
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CN202311166652.8A
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黄迪熙
庄柳
梁国耀
陈明博
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Guangdong Huanqiu Purification Technology Co ltd
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Guangdong Huanqiu Purification Technology Co ltd
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Priority to CN202311166652.8A priority Critical patent/CN117138536A/en
Publication of CN117138536A publication Critical patent/CN117138536A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Drying Of Gases (AREA)

Abstract

The invention discloses an NRG regenerated gas drying system which is applied to the technical field of regenerated gas drying and comprises a regenerated drying system, wherein the regenerated drying system comprises a heating system, a first cooling and separating system, a second cooling and separating system, a regenerated drying device and a circulating system, the regenerated drying device comprises a first tower and a second tower, a venturi structure is arranged, a circulating pipeline is communicated with the venturi structure, low-pressure regenerated tail gas can be mixed into high-pressure wet compressed air by utilizing a venturi effect, the mixed gas flows into the second tower to be dried, and a finished product of dried compressed air is obtained.

Description

NRG regeneration gas drying system
Technical Field
The invention relates to the technical field of regenerated gas drying, in particular to an NRG regenerated gas drying system.
Background
NRG series nitrogen regeneration loop drying units (also known as internal recycle regeneration drying units) are typically "green dryers", which are more particularly suited for other gases than compressed air drying, such as:N 2 、O 2 、CO 2 、H 2 the drying of the equal-pressure gas has the same technical index as the common athermal drying and the athermal drying, and has better economic index for special gas, so the method can be widely applied to operations of petroleum, light industry, chemical industry, machinery, fiber, electronics and the like.
Currently, chinese invention with publication number CN111437698B discloses a compression heat regeneration type drying system, which comprises a first tower, a second tower, a heater, a first pipeline assembly, a second pipeline assembly, an air inlet pipeline, an air outlet pipeline and a split cooling pipeline, wherein a first end of the heater is connected with the air inlet pipeline, a second end of the heater is connected with a first end of the first tower and a second end of the second tower respectively through the first pipeline assembly, a second end of the first tower is connected with a first end of the second tower through the second pipeline assembly, a first cooler is arranged on the second pipeline assembly, the first pipeline assembly is connected with the air outlet pipeline, a first end of the split cooling pipeline is connected with the air inlet pipeline, a second end and a third end of the split cooling pipeline are connected with a second end of the first tower and a first end of the second tower respectively, and a second cooler is arranged on the split cooling pipeline. The system can reduce the whole volume of the system, not only the desorption and adsorption efficiency is obviously improved, but also the regenerated desorption and dry adsorption can be mutually switched, so that the economical efficiency of the system operation is improved;
the adsorption type dryer on the market at present is a athermal adsorption type dryer and a micro thermal adsorption type dryer, and the drying agent is regenerated by the dried compressed air (finished gas), so that the dried compressed air is consumed, and the waste of energy and materials is caused; in the working process of the adsorption dryer, the regeneration of the regeneration tower generally needs to be subjected to a desorption and cooling process, and the desorption process is used for desorbing the water vapor adsorbed in the adsorbent so as to meet the requirement of adsorbing the water vapor in the compressed air in the next cycle; cooling is used to cool the adsorbent to the temperature range of the normal adsorption process in preparation for the next adsorption step, which also results in greater energy consumption of the adsorption dryer, mainly for several reasons; firstly, the regenerated tail gas is often directly discharged to the atmosphere, so that a large amount of energy is lost; secondly, in order to realize the system internal circulation of the regenerated tail gas, energy is required to be input from the outside to supplement the pressure loss in the regeneration process, so that the regenerated tail gas can be mixed into wet compressed air and further enters a dryer for drying; meanwhile, the regeneration process and the switching control of regeneration and adsorption are unreasonable, so that a great amount of dry compressed air is wasted.
To solve the above-mentioned problems, we propose an NRG regeneration gas drying system.
Disclosure of Invention
The invention aims to provide an NRG regenerated gas drying system, which has the advantages of solving the problems of large energy consumption, unreasonable switching control, large energy loss and compressed air waste in the working process of the regenerated gas drying system.
The technical aim of the invention is realized by the following technical scheme: the NRG regenerated gas drying system comprises a regenerated drying system, the regenerated drying system comprises a heating system, a first cooling separation system, a second cooling separation system, a regenerated drying device and a circulating system, the regenerated drying device comprises a first tower and a second tower, the first cooling separation system comprises a first cooler and a first separator, the second cooling separation system comprises a second cooler and a second separator, the first tower and the second tower both contain drying agents, the heating system is communicated with the first tower, two ends of the second cooling separation system are respectively communicated with the first tower and the second tower, part of air heated by the heating system is subjected to hot blowing through the first tower to regenerate the drying agents, the second cooling separation system is used for cooling and separating out water, then air drying is carried out through the second tower, the first cooling separation system is connected with the first tower, and the first cooling separation system is used for cooling and separating out another part of air water, and then cooling and blowing through the first tower to enable the drying agents to restore the activity; the circulating system comprises a venturi structure, a circulating pipeline, a heater and a third cooler, one end of the venturi structure is communicated with the first tower, the other end of the venturi structure is communicated with the circulating pipeline, one end of the circulating pipeline is communicated with the third cooler, one end of the heater is communicated with the third cooler through the venturi structure, the other end of the heater is communicated with the second tower, the venturi structure mixes low-pressure regenerated tail gas into high-pressure and humid compressed air of the second tower, and the mixed gas flows into the second cooling and separating system to cool and separate out water, and then is subjected to air drying through the second tower.
By adopting the technical scheme, the pipeline connection of the first tower, the second tower, the first cooling separation system and the second cooling separation system changes the gas flow direction, does not need to consume dried compressed air, and has small pressure loss, thereby achieving the purpose of saving energy and realizing the drying and regeneration work; by arranging the Venturi structure and communicating the circulating pipeline with the Venturi structure, the low-pressure regenerated tail gas can be mixed in high-pressure wet compressed air by utilizing the Venturi effect, and the mixed gas flows into the second tower to be dried, so that the dried compressed air of a finished product is obtained. The first tower is cold blown to the target temperature and then enters a waiting switching state, the switching point is determined by the dew point temperature value of the finished compressed air after drying in the waiting switching state, and the switching time point of the regeneration operation and the adsorption operation is reasonably controlled by combining the regeneration operation state and the dew point control in the waiting switching state, so that the energy consumption in the working process of the regeneration drying system is greatly reduced.
The invention is further provided with: the regeneration drying system also comprises a first pipeline and a fourth pipeline, the first pipeline comprises a second valve, the fourth pipeline comprises a fourth valve body, two ends of the second valve are respectively communicated with the heating system and the fourth valve body, the fourth valve body is communicated with the second tower, and the second valve and the fourth valve body are opened to enable gas passing through the heating system to flow into the second tower through the second valve and the fourth valve body for drying agent hot blowing; the fourth pipeline further comprises a first valve body, wherein the first valve body is communicated with the first tower, and gas flowing out through the second cooling separation system flows out through the first valve body.
The invention is further provided with: the regeneration drying system further comprises a second pipeline and a third pipeline, the second pipeline comprises a third valve, the third pipeline comprises a sixth valve, two ends of the sixth valve are respectively communicated with the second tower and the third valve, the third valve is communicated with the second cooling separation system, the third valve and the sixth valve are opened, and gas flowing out from the second tower flows into the second cooling separation system for cooling through the third valve and the sixth valve.
The invention is further provided with: the second pipeline further comprises a fourth valve, two ends of the fourth valve are respectively communicated with the first cooling separation system and the sixth valve, the fourth valve and the sixth valve are opened, and gas passing through the first cooling separation system flows into the second tower through the fourth valve and the sixth valve to perform desiccant cold blowing.
The invention is further provided with: the first pipeline further comprises a first valve, two ends of the first valve are respectively communicated with the fourth valve body and the second cooling and separating system, the first valve and the fourth valve body are opened, and gas flowing out from the second tower is cooled through the second cooling and separating system.
The invention is further provided with: the third pipeline further comprises a seventh valve and an eighth valve, two ends of the seventh valve are respectively communicated with the first tower and the second cooling separation system, the seventh valve is opened, gas flows into the first tower for drying, and two ends of the eighth valve are respectively communicated with the second tower and the second cooling separation system.
The invention is further provided with: the fourth pipeline further comprises a second valve body and a third valve body, two ends of the third valve body are respectively communicated with the second valve and the first tower, the third valve body and the second valve are opened, gas passing through the heating system flows into the first tower through the third valve body and the second valve to carry out hot blowing regeneration on the drying agent, and one end of the second valve body is respectively communicated with the second tower.
The invention is further provided with: the third pipeline further comprises a fifth valve, two ends of the fifth valve are respectively communicated with the third valve and the first tower, the third valve and the fifth valve are opened, and the gas passing through the third valve and the fifth valve flows into the second cooling separation system to be cooled.
The invention is further provided with: the regeneration drying system further comprises a dust removal system and an outlet, the dust removal system is communicated with the outlet, the dust removal system is connected with a fourth pipeline, the regeneration drying system further comprises an inlet, and the inlet is respectively communicated with the heating system and the first cooling separation system.
The invention is further provided with: the circulating system further comprises a tenth valve and a ninth valve, two ends of the tenth valve are respectively communicated with the Venturi structure and the heater, two ends of the ninth valve are respectively communicated with the third cooler and the second tower, the tenth valve and the ninth valve are opened, low-pressure regeneration tail gas flowing into the second tower through the Venturi structure through the heater is mixed with high-pressure and humid air, and the mixture flows into the second cooling and separating system through a circulating pipeline to be cooled and separated out of water, and then the water is dried through the second tower.
In summary, the invention has the following beneficial effects:
according to the invention, through the pipeline connection of the first tower, the second tower, the first cooling separation system and the second cooling separation system, the gas flow direction is changed, the dried compressed air is not required to be consumed, and the pressure loss is small, so that the purpose of energy saving is achieved, and the drying and regeneration work is realized;
according to the invention, the venturi structure is arranged, the circulating pipeline is communicated with the venturi structure, the low-pressure regenerated tail gas can be mixed in high-pressure wet compressed air by utilizing the venturi effect, and the mixed gas flows into the second tower to be dried, so that the dried compressed air of a finished product is obtained.
According to the invention, the first tower is cold blown to the target temperature and then enters the waiting switching state, the switching point is determined by the dew point temperature value of the finished compressed air after drying in the waiting switching state, and the switching time point of the regeneration operation and the adsorption operation is reasonably controlled by combining the regeneration operation state and the dew point control in the waiting switching state, so that the energy consumption in the working process of the regeneration drying system is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of the workflow of a preferred embodiment of the NRG regeneration drying system of the present invention.
Reference numerals: 100. a regenerative drying system; 1. an inlet; 2. a heating system; 3. a first cooling separation system; 31. a first cooler; 32. a first separator; 4. a first pipeline; 41. a first valve; 42. a second valve; 5. a second pipeline; 51. a third valve; 52. a fourth valve; 6. a third pipeline; 61. a fifth valve; 62. a sixth valve; 63. a seventh valve; 64. an eighth valve; 7. a regenerative drying device; 71. a first tower; 72. a second column; 8. a second cooling separation system; 81. a second cooler; 82. a second separator; 9. a fourth pipeline; 91. a first valve body; 92. a second valve body; 93. a third valve body; 94. a fourth valve body; 10. a dust removal system; 11. an outlet; 12. a circulation system; 121. a ninth valve; 122. a tenth valve; 123. a heater; 13. a venturi structure; 14. a circulation line; 141. and a third cooler.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
referring to fig. 1, the nrg regeneration gas drying system includes an inlet 1, a heating system 2, a first cooling separation system 3, a first pipe 4, a second pipe 5, a third pipe 6, a regeneration drying device 7, a second cooling separation system 8, a fourth pipe 9, a dust removal system 10, and an outlet 11; the first cooling separation system 3 includes a first cooler 31 and a first separator 32, and the first cooler 31 is connected to the first separator 32; the first pipeline 4 comprises a first valve 41 and a second valve 42, and the first valve 41 is connected with the second valve 42; the second pipeline 5 comprises a third valve 51 and a fourth valve 52, and the third valve 51 is connected with the fourth valve 52; the third pipeline 6 comprises a fifth valve 61, a sixth valve 62, a seventh valve 63 and an eighth valve 64, and the fifth valve 61, the sixth valve 62, the seventh valve 63 and the eighth valve 64 form a loop; the regenerative drying device 7 includes a first tower 71 and a second tower 72, and the first tower 71 and the second tower 72 contain a drying agent for drying air; the second cooling and separating system 8 comprises a second cooler 81 and a second separator 82, and the second cooler 81 is connected with the second separator 82; the fourth pipeline 9 comprises a first valve body 91, a second valve body 92, a third valve body 93 and a fourth valve body 94, and the first valve body 91, the second valve body 92, the third valve body 93 and the fourth valve body 94 form a loop; when the regenerative drying system 100 is assembled, the inlet 1 is respectively connected with the heating system 2 and the first cooling separation system 3, the heating system 2 is connected with the first pipeline 4, the first pipeline 4 is connected with the second cooling separation system 8, the second cooling separation system 8 is connected with the third pipeline 6, the third pipeline 6 is respectively connected with the first tower 71, the second tower 72 and the second pipeline 5, the fourth pipeline 9 is respectively connected with the first tower 71, the second tower 72, the first pipeline 4 and the dust removal system 10, and the dust removal system 10 is connected with the outlet 11; by connecting the first tower 71, the second tower 72, the first cooling separation system 3 and the second cooling separation system 8, the gas flow direction is changed, the dried compressed air is not required to be consumed, and the pressure loss is small, so that the purpose of saving energy is achieved, and the drying and regeneration work is realized.
Referring to fig. 1, the regenerative drying system 100 further includes a first pipe 4 and a fourth pipe 9, the first pipe 4 includes a second valve 42, the fourth pipe 9 includes a fourth valve body 94, both ends of the second valve 42 are respectively communicated with the heating system 2 and the fourth valve body 94, the fourth valve body 94 is communicated with the second tower 72, and the second valve 42 and the fourth valve body 94 are opened to allow the gas passing through the heating system 2 to flow into the second tower 72 through the second valve 42 and the fourth valve body 94 for desiccant hot blowing; the fourth pipeline 9 further comprises a first valve body 91, the first valve body 91 being in communication with the first tower 71, and the gas flowing out through the second cooling separation system 8 flowing out through the first valve body 91.
Referring to fig. 1, the regenerative drying system 100 further includes a second pipe 5 and a third pipe 6, the second pipe 5 includes a third valve 51, the third pipe 6 includes a sixth valve 62, both ends of the sixth valve 62 are respectively communicated with the second tower 72 and the third valve 51, the third valve 51 is communicated with the second cooling separation system 8, the third valve 51 and the sixth valve 62 are opened, and the gas flowing out through the second tower 72 flows into the second cooling separation system 8 through the third valve 51 and the sixth valve 62 to be cooled.
Referring to fig. 1, the second pipe 5 further includes a fourth valve 52, both ends of the fourth valve 52 are respectively communicated with the first cooling separation system 3 and the sixth valve 62, and the fourth valve 52 and the sixth valve 62 are opened, and the gas passing through the first cooling separation system 3 flows into the second tower 72 through the fourth valve 52 and the sixth valve 62 to perform desiccant cold blowing.
Referring to fig. 1, the first pipe 4 further includes a first valve 41, both ends of the first valve 41 are respectively communicated with the fourth valve body 94 and the second cooling separation system 8, and the first valve 41 and the fourth valve body 94 are opened, and the gas flowing out through the second tower 72 is cooled by the second cooling separation system 8.
Referring to fig. 1, the third pipeline 6 further includes a seventh valve 63 and an eighth valve 64, both ends of the seventh valve 63 are respectively communicated with the first tower 71 and the second cooling separation system 8, the seventh valve 63 is opened, gas flows into the first tower 71 for drying, and both ends of the eighth valve 64 are respectively communicated with the second tower 72 and the second cooling separation system 8.
Referring to fig. 1, the fourth pipeline 9 further includes a second valve body 92 and a third valve body 93, both ends of the third valve body 93 are respectively communicated with the second valve 42 and the first tower 71, the third valve body 93 and the second valve 42 are opened, the gas passing through the heating system 2 flows into the first tower 71 through the third valve body 93 and the second valve 42 to perform hot blowing regeneration on the drying agent, and one end of the second valve body 92 is respectively communicated with the second tower 72.
The working principle is briefly described: in using the regenerative drying system 100, for convenience of description of the present embodiment, the operation state is divided into four processes;
firstly, when the first tower 71 is dried and the second tower 72 is heated and regenerated, the overheated compressed air discharged by the air compressor is subjected to temperature compensation through the heating system 2, the air is heated, and because the drying agent has no water absorption activity in a high temperature state, hot air dries the drying agent, and enters the second tower 72 through the second valve 42 and the fourth valve body 94 to heat and desorb moisture, and then enters the first cooling and separating system 3 through the sixth valve 62 and the third valve 51, and is firstly cooled and then separated into moisture, and it is required to be noted that the water vapor is separated after the high temperature air is cooled, and because the drying tower is easy to burst after meeting liquid water, the drying agent is also easy to discard, and saturated air enters the first tower 71 through the seventh valve 63 to absorb the moisture after being cooled and separated, and is discharged through the dust removing system 10;
then when the first tower 71 is dried and the second tower 72 is regenerated by cold blowing, the overheated compressed air discharged by the air compressor enters the second cooling and separating system 8 to be cooled and separated into water, the water enters the second tower 72 by the fourth valve 52 and the sixth valve 62 to be cooled and separated by the cooling and separating system 3 by the fourth valve 94 and the first valve 41 after the activity of the drying agent is recovered, and the saturated air enters the first tower 71 by the seventh valve 63 to absorb the water and is discharged by the dust removing system 10;
then when the second tower 72 is dried, the first tower 71 is heated and regenerated, the overheated compressed air discharged by the air compressor is subjected to temperature compensation through the heating system 2, enters the first tower 71 through the second valve 42 and the third valve 93 to be heated and desorbed with water, enters the first cooling and separating system 3 through the fifth valve 61 and the third valve 51 to be cooled and separated with water, and enters the second tower 72 through the eighth valve 64 to be absorbed with water by saturated air and then is discharged through the dust removing system 10;
finally, when the second tower 72 is dried, the first tower 71 is subjected to cold blowing regeneration, the overheated compressed air discharged by the air compressor enters the second cooling and separating system 8 to be cooled and separated into water, the water enters the first tower 71 through the fourth valve 52 and the fifth valve 61 to be blown and cooled, the desiccant activity is recovered, the water enters the first cooling and separating system 3 through the third valve 93 and the first valve 41 to be cooled and separated, and the saturated air enters the second tower 72 through the eighth valve 64 to absorb the water and then is discharged through the dust removing system 10.
Example 2:
referring to fig. 1, the nrg regeneration gas drying system, the circulation system 12 includes a venturi structure 13 and a circulation line 14, and a heater 123 and a third cooler 141, one end of the venturi structure 13 is communicated with the first tower 71, and the other end is communicated with the circulation line 14, one end of the circulation line 14 is communicated with the third cooler 141, one end of the heater 123 is communicated with the third cooler 141 through the venturi structure 13, and the other end is communicated with the second tower 72, the venturi structure 13 mixes the low-pressure regeneration tail gas into high-pressure, humid compressed air of the second tower 72, and the mixed gas flows into the second cooling separation system 8 to be cooled and separated out water, and then is subjected to air drying through the second tower 72; by arranging the Venturi structure 13 and communicating the circulating pipeline 14 with the Venturi structure 13, the low-pressure regenerated tail gas can be mixed in high-pressure wet compressed air by utilizing the Venturi effect, and the mixed gas flows into the second tower 72 for drying to obtain the finished product of dried compressed air.
Referring to fig. 1, the third pipeline 6 further includes a fifth valve 61, both ends of the fifth valve 61 are respectively communicated with the third valve 51 and the first tower 71, the third valve 51 and the fifth valve 61 are opened, and the gas passing through the first tower 71 flows into the second cooling separation system 8 through the third valve 51 and the fifth valve 61 to be cooled.
Referring to fig. 1, the regenerative drying system 100 further includes a dust removal system 10 and an outlet 11, the dust removal system 10 is in communication with the outlet 11, the dust removal system 10 is connected with the fourth pipeline 9, the regenerative drying system 100 further includes an inlet 1, and the inlet 1 is in communication with the heating system 2 and the first cooling separation system 3, respectively.
Referring to fig. 1, the circulation system 12 further includes a tenth valve 122 and a ninth valve 121, both ends of the tenth valve 122 are respectively communicated with the venturi structure 13 and the heater 123, both ends of the ninth valve 121 are respectively communicated with the third cooler 141 and the second tower 72, the low-pressure regeneration tail gas passing through the venturi structure 13 through the heater 123 flows into the second tower 72 to be mixed with high-pressure and humid air by opening the tenth valve 122 and the ninth valve 121, and then flows into the second cooling separation system 8 through the circulation pipeline 14 to be cooled and separated out moisture, and then is dried by the second tower 72.
The working principle is briefly described: firstly, a part of moist compressed air is introduced into the regeneration drying device 7 in adsorption operation for adsorption drying, meanwhile, the other part of moist compressed air is heated by the circulating system 12 through the heater 123 and then is introduced as regeneration air from one end of the regeneration drying device 7 in regeneration operation, low-pressure regeneration tail gas can be mixed into high-pressure moist compressed air by utilizing the Venturi effect of the Venturi structure 13, the mixed gas flows into the regeneration drying device 7 for drying, the regeneration tail gas is discharged from the other end of the regeneration drying device 7 in regeneration operation to the circulating pipeline 14, meanwhile, a ninth valve 121 on the circulating system 12 is opened, so that unheated partial moist compressed air is introduced from one end of the regeneration drying device 7 in regeneration operation, the drying agent in the regeneration drying device 7 in regeneration operation is cooled, and the regeneration tail gas is discharged from the other end of the regeneration drying device 7 in regeneration operation.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.

Claims (10)

  1. Nrg regeneration gas drying system, characterized by comprising a regeneration drying system (100), wherein the regeneration drying system (100) comprises a heating system (2), a first cooling separation system (3), a second cooling separation system (8), a regeneration drying device (7) and a circulating system (12), the regeneration drying device (7) comprises a first tower (71) and a second tower (72), the first cooling separation system (3) comprises a first cooler (31) and a first separator (32), the second cooling separation system (8) comprises a second cooler (81) and a second separator (82), the first tower (71) and the second tower (72) are internally provided with drying agents, the heating system (2) is communicated with the first tower (71), two ends of the second cooling separation system (8) are respectively communicated with the first tower (71) and the second tower (72), the heating system heats part of air, then flows through the first tower (71) to make the drying agents regenerate, and the second cooling separation system (8) cools and separates out water through the second cooling separation system (72) and then is connected with the first cooling tower (3), the first cooling separation system (3) cools and separates out another part of air moisture, and then the air moisture flows through the first tower (71) for cold blowing to enable the drying agent to cool down and restore activity;
    the circulating system (12) comprises a venturi structure (13) and a circulating pipeline (14), a heater (123) and a third cooler (141), one end of the venturi structure (13) is communicated with the first tower (71), the other end of the venturi structure is communicated with the circulating pipeline (14), one end of the circulating pipeline (14) is communicated with the third cooler (141), one end of the heater (123) is communicated with the third cooler (141) through the venturi structure (13), the other end of the heater is communicated with the second tower (72), the venturi structure (13) mixes low-pressure regenerated tail gas into high-pressure and humid compressed air of the second tower (72), and mixed gas flows into the second cooling and separating system (8) to cool and separate out water, and then the mixed gas is dried in air through the second tower (72).
  2. 2. NRG regeneration gas drying system according to claim 1, characterized in that the regeneration drying system (100) further comprises a first pipeline (4) and a fourth pipeline (9), the first pipeline (4) comprises a second valve (42), the fourth pipeline (9) comprises a fourth valve body (94), two ends of the second valve (42) are respectively communicated with the heating system (2) and the fourth valve body (94), the fourth valve body (94) is communicated with the second tower (72), and the second valve (42) and the fourth valve body (94) are opened to enable the gas passing through the heating system (2) to flow into the second tower (72) through the second valve (42) and the fourth valve body (94) for hot blowing of the drying agent; the fourth pipeline (9) further comprises a first valve body (91), wherein the first valve body (91) is communicated with the first tower (71), and gas flowing out through the second cooling separation system (8) flows out through the first valve body (91).
  3. 3. NRG regeneration gas drying system according to claim 1, characterized in that the regeneration drying system (100) further comprises a second pipeline (5) and a third pipeline (6), the second pipeline (5) comprises a third valve (51), the third pipeline (6) comprises a sixth valve (62), both ends of the sixth valve (62) are respectively communicated with the second tower (72) and the third valve (51), the third valve (51) is communicated with the second cooling separation system (8), the third valve (51) and the sixth valve (62) are opened, and the gas flowing out through the second tower (72) flows into the second cooling separation system (8) through the third valve (51) and the sixth valve (62) for cooling.
  4. 4. A NRG regeneration gas drying system according to claim 3, wherein the second pipe (5) further comprises a fourth valve (52), both ends of the fourth valve (52) are respectively communicated with the first cooling separation system (3) and the sixth valve (62), the fourth valve (52) and the sixth valve (62) are opened, and the gas passing through the first cooling separation system (3) flows into the second tower (72) through the fourth valve (52) and the sixth valve (62) for desiccant cold blowing.
  5. 5. NRG regeneration gas drying system according to claim 2, characterized in that the first pipe (4) further comprises a first valve (41), both ends of the first valve (41) are respectively communicated with a fourth valve body (94) and a second cooling separation system (8), the first valve (41) and the fourth valve body (94) are opened, and the gas flowing out through the second tower (72) is cooled by the second cooling separation system (8).
  6. 6. A NRG regeneration gas drying system according to claim 3, wherein the third pipeline (6) further comprises a seventh valve (63) and an eighth valve (64), both ends of the seventh valve (63) are respectively communicated with the first tower (71) and the second cooling separation system (8), the seventh valve (63) is opened, gas flows into the first tower (71) for drying, and both ends of the eighth valve (64) are respectively communicated with the second tower (72) and the second cooling separation system (8).
  7. 7. NRG regeneration gas drying system according to claim 2, characterized in that the fourth pipeline (9) further comprises a second valve body (92) and a third valve body (93), both ends of the third valve body (93) are respectively communicated with the second valve (42) and the first tower (71), the third valve body (93) and the second valve (42) are opened, the gas passing through the heating system (2) flows into the first tower (71) through the third valve body (93) and the second valve (42) to perform hot blowing regeneration on the drying agent, and one end of the second valve body (92) is respectively communicated with the second tower (72).
  8. 8. A NRG regeneration gas drying system according to claim 3, wherein the third pipeline (6) further comprises a fifth valve (61), both ends of the fifth valve (61) are respectively communicated with the third valve (51) and the first tower (71), the third valve (51) and the fifth valve (61) are opened, and the gas passing through (17) flows into the second cooling separation system (8) through the third valve (51) and the fifth valve (61) for cooling.
  9. 9. NRG regeneration gas drying system according to claim 1, characterized in that the regeneration drying system (100) further comprises a dust removal system (10) and an outlet (11), the dust removal system (10) being in communication with the outlet (11), the dust removal system (10) being connected with the fourth pipeline (9), the regeneration drying system (100) further comprising an inlet (1), the inlet (1) being in communication with the heating system (2) and the first cooling separation system (3), respectively.
  10. 10. NRG regeneration gas drying system according to claim 1, characterized in that the circulation system (12) further comprises a tenth valve (122) and a ninth valve (121), both ends of the tenth valve (122) are respectively communicated with the venturi structure (13) and the heater (123), both ends of the ninth valve (121) are respectively communicated with the third cooler (141) and the second tower (72), the low pressure regeneration tail gas flowing into the second tower (72) through the venturi structure (13) by opening the tenth valve (122) and the ninth valve (121) is mixed with high pressure and humid air by the heater (123), and then flows into the second cooling separation system (8) through the circulation pipeline (14) for cooling and moisture precipitation, and then is subjected to air drying by the second tower (72).
CN202311166652.8A 2023-09-11 2023-09-11 NRG regeneration gas drying system Pending CN117138536A (en)

Priority Applications (1)

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CN202311166652.8A CN117138536A (en) 2023-09-11 2023-09-11 NRG regeneration gas drying system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311166652.8A CN117138536A (en) 2023-09-11 2023-09-11 NRG regeneration gas drying system

Publications (1)

Publication Number Publication Date
CN117138536A true CN117138536A (en) 2023-12-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311166652.8A Pending CN117138536A (en) 2023-09-11 2023-09-11 NRG regeneration gas drying system

Country Status (1)

Country Link
CN (1) CN117138536A (en)

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