CN204816126U - Pressure swing adsorption recovery system that drops a hint among urea production - Google Patents
Pressure swing adsorption recovery system that drops a hint among urea production Download PDFInfo
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- CN204816126U CN204816126U CN201520457858.0U CN201520457858U CN204816126U CN 204816126 U CN204816126 U CN 204816126U CN 201520457858 U CN201520457858 U CN 201520457858U CN 204816126 U CN204816126 U CN 204816126U
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- China
- Prior art keywords
- hint
- hydrogen nitrogen
- nitrogen compressor
- recovery system
- pressure
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Abstract
The utility model provides a pressure swing adsorption recovery system that drops a hint among urea production, recovery system includes hydrogen nitrogen compressor, and pressure swing adsorption three -section unloading pipeline is connected with half desulfurization system inlet piping, half desulfurization system export pipeline and hydrogen nitrogen compressor access connection, and system's access connection is taken off with the change to the export of hydrogen nitrogen compressor. Adopt the utility model discloses, the former three -section of pressure swing adsorption is dropped a hint after half desulfurization system desulfurization, uses hydrogen nitrogen compressor to drop a hint the three -section to pressurize to send into behind the 1.7 -2.0Mpa and become import inward -remittance system of the system of taking off and utilize again. Consequently the utility model discloses a retrieve the more hydrogen nitrogen gas of content in dropping a hint, reduce the gaseous loss of unloading, reduce simultaneously and put the air circumstance pollution.
Description
Technical field
The utility model belongs to technical field of urea production, is specifically related to pressure-variable adsorption in a kind of urea production and drops a hint recovery system.
Background technology
In prior art urea production, pressure-variable adsorption three sections of gas generally in battery limit (BL) emptying, major gaseous component H
2: 15-20, CO
2: 32-38, CO:4-5, N
2: 35-40, O
2: 0.4-0.5, CH
4: 4-5, emptying gas flow 2450m per hour
3/ h, the gas of huge capacity like this not only causes environmental pollution, and gas emptying causes very large waste.
Summary of the invention
The purpose of this utility model is just to provide pressure-variable adsorption in a kind of urea production to drop a hint recovery system for solving the deficiencies in the prior art.
The purpose of this utility model realizes with following technical proposals:
In a kind of urea production, pressure-variable adsorption is dropped a hint recovery system, described recovery system comprises hydrogen nitrogen compressor, pressure-variable adsorption three sections of exhausting pipelines are connected with half desulphurization system inlet pipeline, half desulphurization system outlet conduit is connected with hydrogen nitrogen compressor inlet, and hydrogen nitrogen compressor outlet is connected with the de-system inlets of change.
Described hydrogen nitrogen compressor is L3.3-25/1-20 type hydrogen nitrogen compressor, and point three sections of compressions, the 3rd section of pressure is 1.7-2.0Mpa.
Described hydrogen nitrogen compressor blow-down pipe connects surge tank, establishes draining valve bottom surge tank.
Adopt the utility model, former three sections of pressure-variable adsorption is dropped a hint after more than half desulphurization system desulfurization, and use hydrogen nitrogen compressor is sent into the de-system inlets of change after dropping a hint three sections and being pressurized to 1.7-2.0Mpa and imported system re-using.Therefore the utility model is reclaimed by the hydrogen and nitrogen gas more to middle content of dropping a hint, and reduces emptying gas loss, reduces environmental pollution of dropping a hint simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the utility model hydrogen nitrogen compressor divides three stage compression principle schematic.
Detailed description of the invention
In the urea production that the utility model provides, pressure-variable adsorption is dropped a hint recovery system, as shown in Figure 1-2, pressure-variable adsorption three section of 1 exhausting pipeline 2 is connected with half desulphurization system 3 inlet pipeline, half desulphurization system 3 outlet conduit is connected with the import of hydrogen nitrogen compressor 4, and the outlet of hydrogen nitrogen compressor 4 is connected with the de-system inlets of change.Described hydrogen nitrogen compressor 4 is L3.3-25/1-20 type hydrogen nitrogen compressor, divide three sections of compressions, pressure is 0.10MPa, three sections of sweet gas of temperature 35 DEG C enter two one-level cylinder compression in parallel, pressure reaches 0.45MPa, secondary cylinder compression is sent to through one-level cooler, primary separator, after pressure reaches 1.1MPa, three sections of compressions are sent to through secondary coolers, second-stage separator, after pressure reaches 1.7-2.0MPa, be sent to the de-import of the de-essence of change import system recoveries utilization through three grades of coolers, three grades of separators.First can reduce the impact of sulphur on compressor through half desulphurization system desulfurization before three sections of compressions of dropping a hint, reduce the risk etc. of its carbon distribution blast.
Further, emptying is needed equally during hydrogen nitrogen compressor switch, drop a hint containing grease, surge tank 6 set up by hydrogen nitrogen compressor 4 blow-down pipe, and establish draining valve 7 bottom surge tank 6, compressor emptying gas enters surge tank 6, gas is separated because of gravity with grease, grease is discharged through draining valve, recyclable, decreasing pollution; Then be separated rear gas emptying or again recycle.
Claims (3)
1. in a urea production, pressure-variable adsorption is dropped a hint recovery system, it is characterized in that: described recovery system comprises hydrogen nitrogen compressor, pressure-variable adsorption three sections of exhausting pipelines are connected with half desulphurization system inlet pipeline, half desulphurization system outlet conduit is connected with hydrogen nitrogen compressor inlet, and hydrogen nitrogen compressor outlet is connected with the de-system inlets of change.
2. in urea production as claimed in claim 1, pressure-variable adsorption is dropped a hint recovery system, and it is characterized in that: described hydrogen nitrogen compressor is L3.3-25/1-20 type hydrogen nitrogen compressor, point three sections of compressions, the 3rd section of pressure is 1.7-2.0Mpa.
3. in urea production as claimed in claim 1, pressure-variable adsorption is dropped a hint recovery system, it is characterized in that: described hydrogen nitrogen compressor blow-down pipe connects surge tank, establishes draining valve bottom surge tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457858.0U CN204816126U (en) | 2015-06-30 | 2015-06-30 | Pressure swing adsorption recovery system that drops a hint among urea production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457858.0U CN204816126U (en) | 2015-06-30 | 2015-06-30 | Pressure swing adsorption recovery system that drops a hint among urea production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204816126U true CN204816126U (en) | 2015-12-02 |
Family
ID=54673769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520457858.0U Expired - Fee Related CN204816126U (en) | 2015-06-30 | 2015-06-30 | Pressure swing adsorption recovery system that drops a hint among urea production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204816126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521954A (en) * | 2021-08-17 | 2021-10-22 | 安徽金禾实业股份有限公司 | Device and method for recovering blow-down gas of oil content system of hydrogen-nitrogen compressor |
-
2015
- 2015-06-30 CN CN201520457858.0U patent/CN204816126U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521954A (en) * | 2021-08-17 | 2021-10-22 | 安徽金禾实业股份有限公司 | Device and method for recovering blow-down gas of oil content system of hydrogen-nitrogen compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20210630 |