CN201760215U - Pressure increasing and changing energy-saving device of carbon-C decarburization process in ammonia synthesis system - Google Patents
Pressure increasing and changing energy-saving device of carbon-C decarburization process in ammonia synthesis system Download PDFInfo
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- CN201760215U CN201760215U CN2009202924028U CN200920292402U CN201760215U CN 201760215 U CN201760215 U CN 201760215U CN 2009202924028 U CN2009202924028 U CN 2009202924028U CN 200920292402 U CN200920292402 U CN 200920292402U CN 201760215 U CN201760215 U CN 201760215U
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Abstract
The utility model discloses a pressure increasing and changing energy-saving device of carbon-C decarburization process in an ammonia synthetic system, which comprises five variable-pressure middle storage tanks, gas-phase pipelines, liquid-phase pipelines and branch pipelines of the gas-phase pipelines and liquid-phase pipelines, automatic switch valves and program control systems, the gas-phase pipelines and the branch pipelines of the gas-phase pipelines are respectively connected to the upper ends of the five variable-pressure middle storage tanks, and the liquid-phase pipelines and the branch pipelines of the liquid-phase pipelines are respectively connected to the lower sides of the variable-pressure middle storage tanks. A process circulation is completed by the five variable-pressure middle storage tanks, the related pipelines and the automatic switch valves according to program control requirements after barren liquor naturally flows into the variable-pressure middle storage tanks from a gas stripping tower, and consequentially, the pressure in the variable-pressure middle storage tanks is increased to be equal to a decarburization tower, and then changed to be equal to a flash drum, thereby greatly reducing the lift of a decarburization pump, and being capable of using a small-power decarburization pump to complete circulation of carbon-C liquid with the same flow. Compared with an existing carbon-C decarburization process device, the pressure increasing and changing energy-saving device can save 70-80% of electric energy, thereby reducing production cost.
Description
Technical field
The utility model relates to the energy saver of carbon third decarbonization process in a kind of synthesis ammonia system, be specifically a kind of be used for that the synthesis ammonia system propene carbonate removes carbon dioxide process carry the transformation energy saver.
Background technology
In synthetic ammonia or urea production industry, its synthesis ammonia system extensively adopts propene carbonate to remove carbon dioxide (Co especially for the synthesis ammonia system of producing urea
2) technology, common name carbon third decarbonization process, it is simple to have technology, produce stable advantage, and the decarburization pump is the main consumer in carbon third decarbonization process, power is big, the energy consumption height, but, the existing carbon third decarbonization process device constitutes simple and is provided with unreasonable, storage tank in the normal pressure only is set, pressure in the decarbonizing tower is far above the pressure in the middle storage tank, make the decarburization pump must meet the normal circulation operation that certain lift requires the system that could guarantee, when system pressure is 1.8MPa, the decarburization pump lift must reach 250 meters, when system pressure is 2.1MPa, the decarburization pump lift must reach 280 meters, when system pressure is 2.7MPa, the decarburization pump lift must reach 350 meters, therefore, as produce supporting carbon third decarbonization device of 500,000 tons of ammonia alcohol per year, generally all adopt 3 respectively to be 1600 kilowatt-hours high-power multipole decarburization centrifugal pump, the electric power energy consumption of whenever raming the loose soil with a stone-roller after sowing synthetic ammonia is greater than 100 kilowatt-hours, this because of device constitutes the unreasonable present situation that can't get rid of high-energy equipment, directly cause energy consumption excessive, thereby increased production cost greatly, reclaim link although be provided with the turbine pump energy therein, have little effect.
Summary of the invention
The purpose of this utility model is to solve the deficiency of prior art, provides a kind of device to constitute rationally, adopts carbon third decarbonization process of low energy consumption small-power decarburization pump to carry the transformation energy saver, can reduce power consumption greatly on the basis that guarantees former technological level.
The technical solution of the utility model is, this device is made up of storage tank, gas phase pipeline and lateral, liquid pipe and lateral, automatic switch valve, program control system in program control system, 5 transformations, the storage tank upper end is connected with gas phase pipeline and lateral thereof respectively in 5 transformations, between the gas phase pipeline, between the lateral, be provided with automatic switch valve between gas phase pipeline and the lateral, the purified gas pressure-equalizing passageway links to each other with the gas phase pipeline by automatic switch valve with the conversion feed channel; The storage tank below is connected with liquid pipe and lateral thereof respectively in the transformation, between the liquid pipe, between the lateral, be respectively arranged with automatic switch valve between liquid pipe and the lateral, lean solution pipeline, rich solution pipeline link to each other with liquid pipe by automatic switch valve.Guaranteeing that decarbonizing tower and stripping tower liquid level are higher than under the process conditions at storage tank top in the transformation, lean solution is flowed in the transformation behind the storage tank naturally by stripping tower, program control system is sent out to automatic switch valve by technological process and specification requirement, close action command, by storage tank in 5 transformations, follow procedure requires to finish towards lean solution between associated conduit and the automatic switch valve, dash all and press, rich solution recoil displacement, hydraulic fluid is to flash tank, reclaim or five working procedures of emptying, make in the storage tank in the transformation boost in pressure to the decarbonizing tower equipressure, become again and the flash tank equipressure, realize a working cycles, so just greatly shortened the decarburization pump lift, the actual lift of decarburization pump only needs the height a little more than decarbonizing tower, actual lift≤50 meter can reach job requirement, therefore can adopt small-power decarburization pump, under the identical situation of annual production, the existing carbon third decarbonization process device of the utility model can be saved electric energy 70%-80%.
Because reasonable setting of the present utility model and effectively operation, make that the pressure in the storage tank and decarbonizing tower equates in the transformation, thereby can adopt small-power decarburization pump to finish the circular flow of same carbon third liquid, the utility model advantage compared with prior art is, can significantly reduce energy consumption, thereby reduce production costs; Adapt to China's energy-saving and emission-reduction policy requirements, environmental.
Description of drawings
Accompanying drawing be in the utility model synthesis ammonia system carbon third decarbonization process carry transformation energy saver structure chart.
Among the figure: storage tank 1-1 in 1～5 transformation～1-7 automatic switch valve 6 gas phase pipelines 7 purified gas pressure-equalizing passagewaies 8 conversion feed channel 9 liquid pipes 10 lean solution pipelines 11 rich solution pipelines 12 decarbonizing towers 13 stripping towers 14 decarburization pumps 15 flash tanks 16 balance pipe lines 17 program control systems
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
In the drawings, storage tank 1～5 upper end is connected with gas phase pipeline 6 and lateral thereof respectively in 5 transformations, between the gas phase pipeline 6, between the lateral, be provided with the automatic switch valve that comprises 1-2,1-3,1-5 between gas phase pipeline 6 and the lateral, purified gas pressure-equalizing passageway 7, conversion feed channel 8 link to each other with gas phase pipeline 6 by automatic switch valve; Storage tank 1～5 below is connected with liquid pipe 9 and lateral thereof respectively in the transformation, between the liquid pipe 9, between the lateral, be respectively arranged with the automatic switch valve that comprises 1-1,1-4,1-6,1-7 between liquid pipe 9 and the lateral, lean solution pipeline 10, rich solution pipeline 11 link to each other with liquid pipe 9 by automatic switch valve.Be higher than under the process conditions at storage tank 1～5 top in the transformation in the liquid level that guarantees decarbonizing tower 12, stripping tower 13, program control system 17 is sent the open and close action command by technological process and specification requirement to automatic switch valve, thereby finish five technical process that are connected mutually, realize a job note circulation, the technical process of its carbon third decarburization is:
The first step towards lean solution, opens automatic switch valve 1-1 by program control system 17, and automatic switch valve 1-2 opens, and other automatic switch valve is in closed condition, and fill with in transformation storage tank 1 from the lean solution of stripping tower 13 this moment.
Second step, dash all and press, close automatic switch valve 1-1 by program control system 17 this moment, automatic switch valve 1-2 closes, automatic switch valve 1-3 opens, at this moment storage tank 1 and decarbonizing tower 12 equipressures in the transformation, automatic switch valve 1-4 opens, and provides lean solution with system's equipressure by small-power decarburization pump 14 for decarbonizing tower 12.
The 3rd step, rich solution recoil displacement, when the liquid level of storage tank in the transformation 1 is pumped down to the control low spot, by program control system 17 automatic switch valve 1-4 is closed, automatic switch valve 1-3 also closes, and automatic switch valve 1-5 opens, and automatic switch valve 1-6 also opens, fill with storage tank 1 in the transformation from the rich solution of decarbonizing tower 12, wherein purified gas is cemented out enter conversion feed channel 8.
In the 4th step, hydraulic fluid is to flash tank 15, and rich solution is filled with in the transformation behind the storage tank 1, by program control system 17 automatic switch valve 1-5 is closed, and automatic switch valve 1-6 also closes, and automatic switch valve 1-7 opens, according to the carbon third liquid absorbing carbon dioxide (C
O2) characteristics, will cause storage tank 1 and flash tank 15 equipressures, at this moment great amount of carbon dioxide (C in the transformation after automatic switch valve 1-7 opens
O2) wait gas to separate out, to flash tank 15, what be provided with in this device passes through the balance pipe line 16 that automatic switch valve links to each other with gas phase pipeline 6 with third hydraulic pressure of the carbon in the storage tank in the transformation 1, can do according to process conditions and all press use.
The 5th step, to reclaim or emptying, open automatic switch valve 1-2 by program control system 17 this moment, and other automatic switch valve is closed, and reclaims flashed vapour or emptying in the storage tank 1 in the transformation.
This device is fit to high-lift, high energy consumption too, as the reducing energy consumption of the industrial system of washing or absorbing.
Claims (1)
- In the synthesis ammonia system carbon third decarbonization process carry the transformation energy saver, it is characterized in that: this device is by storage tank (1)～(5) in 5 transformations, gas phase pipeline (6) and lateral, liquid pipe (9) and lateral, automatic switch valve, program control system (17) is formed, upper end, storage tank (1)～(5) is connected with gas phase pipeline (6) and lateral thereof respectively in 5 transformations, between gas phase pipeline (6), between the lateral, be provided with automatic switch valve (1-2) between gas phase pipeline (6) and the lateral, (1-3), (1-5), purified gas pressure-equalizing passageway (7), conversion feed channel (8) links to each other with gas phase pipeline (6) by automatic switch valve, below, storage tank in the transformation (1)～(5) is connected with liquid pipe (9) and lateral thereof respectively, between liquid pipe (9), between the lateral, be respectively arranged with automatic switch valve (1-1) between liquid pipe (9) and the lateral, (1-4), (1-6), (1-7), lean solution pipeline (10), rich solution pipeline (11) links to each other with liquid pipe (9) by automatic switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202924028U CN201760215U (en) | 2009-12-08 | 2009-12-08 | Pressure increasing and changing energy-saving device of carbon-C decarburization process in ammonia synthesis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202924028U CN201760215U (en) | 2009-12-08 | 2009-12-08 | Pressure increasing and changing energy-saving device of carbon-C decarburization process in ammonia synthesis system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201760215U true CN201760215U (en) | 2011-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202924028U Expired - Fee Related CN201760215U (en) | 2009-12-08 | 2009-12-08 | Pressure increasing and changing energy-saving device of carbon-C decarburization process in ammonia synthesis system |
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| Country | Link |
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| CN (1) | CN201760215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103585779A (en) * | 2013-10-31 | 2014-02-19 | 安徽晋煤中能化工股份有限公司 | Method for removing elemental sulfur from propylene carbonate decarbonization solution in propylene carbonate decarbonization system |
-
2009
- 2009-12-08 CN CN2009202924028U patent/CN201760215U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103585779A (en) * | 2013-10-31 | 2014-02-19 | 安徽晋煤中能化工股份有限公司 | Method for removing elemental sulfur from propylene carbonate decarbonization solution in propylene carbonate decarbonization system |
| CN103585779B (en) * | 2013-10-31 | 2015-09-30 | 安徽晋煤中能化工股份有限公司 | The sweep-out method of simple substance sulphur in propene carbonate decarbonization system carbon third decarbonizing liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Wang Jianxun Document name: Notification to Make Rectification |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20111208 |