CN210769551U - Cooling water supply system for cracked gas compressor - Google Patents
Cooling water supply system for cracked gas compressor Download PDFInfo
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- CN210769551U CN210769551U CN201921701755.9U CN201921701755U CN210769551U CN 210769551 U CN210769551 U CN 210769551U CN 201921701755 U CN201921701755 U CN 201921701755U CN 210769551 U CN210769551 U CN 210769551U
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Abstract
The utility model relates to a cracked gas compressor cooling water supply system, which comprises a cooling water system, wherein the cooling water system comprises two parallel filter groups, and outlet pipelines of the two filter groups are respectively communicated with two cracked gas compressors; the cooling water supply system of the pyrolysis gas compressor also comprises a condensate system, wherein the condensate system comprises a desalted water storage tank and a condensate pump set which are sequentially communicated; and the outlet pipeline of the desalted water storage tank is also communicated with a cooling water feeding pipeline which is communicated with the inlet pipelines of the two filter groups. The utility model discloses can avoid the carbon black deposit of whole pyrolysis gas compressor cooling water supply system and the polymer deposit that the carbon black deposit leads to can solve the problem of the compressor import spiral case that carbon black and polymer deposit lead to and block up and the wearing and tearing of rotor terminal surface, guarantee the stability of pyrolysis gas compressor, normally and permanent operation, prolong the life and the maintenance cycle of compressor.
Description
Technical Field
The utility model relates to a cooling water supply system, belonging to the field of chemical equipment; in particular to a cooling water supply system of a cracked gas compressor.
Background
Cracking gas, multi-component mixed gas generated in the process of producing lower olefins by pyrolysis of petroleum hydrocarbon. The composition varies depending on the starting material, the cracking method and the cracking conditions. Primarily methane and carbon two to carbon five alkenes and alkanes. And impurities such as hydrogen, a small amount of alkyne, sulfide, carbon monoxide, carbon dioxide, water, inert gas and the like. The cracking gas is purified and separated by deep cooling to obtain the ethylene and propylene with required purity.
The common method for cracking the cracked gas is a natural gas partial oxidation method, an acetylene reactor used in the natural gas partial oxidation method needs to be sprayed with water and cooled by a (secondary) cracked gas compressor, in the specific use process, a cooling water supply system of the cracked gas compressor originally uses local cooling water (circulating water, the temperature is controlled at 29-31 ℃) to spray water and cool, and due to the influence of water quality, the following problems easily occur in the whole cooling water supply system: 1. the components in water are complex, which can cause the generation of polymers in water and influence the smooth pipeline and the operation of a compressor; 2. carbon black in water is deposited and adsorbs generated polymer lumps to block an inlet volute of the compressor, a layer of hard polymer is formed on a rotor of the compressor, the operation and the service life of the compressor are influenced, and the overhaul time of the compressor is shortened; 3. after the volute of the compressor is blocked, the pressure ratio of the compressor rises, and the safe operation and the production load of the compressor are influenced. The series of problems can cause the phenomenon of carbon black deposition at the position of the secondary inlet volute of the compressor, lead to the abrasion of the end surface of a rotor of the compressor, large vibration fluctuation in the operation of the compressor, and the shortening of the overhaul period of the compressor, and seriously affect the normal use and work of the compressor.
SUMMERY OF THE UTILITY MODEL
Based on above technical problem, the utility model provides a pyrolysis gas compressor cooling water supply system to solved in the past pyrolysis gas compressor cooling water supply system and blockked up and the big technical problem of rotor end face wearing and tearing and compressor vibration fluctuation because of the quality of water problem leads to system's carbon black and polymer deposit, compressor import spiral case.
For solving the above technical problem, the utility model discloses a technical scheme as follows:
a cooling water supply system for a cracked gas compressor comprises a cooling water system, wherein the cooling water system comprises two filter groups connected in parallel, and outlet pipelines of the two filter groups are respectively communicated with the two cracked gas compressors;
the cooling water supply system of the pyrolysis gas compressor also comprises a condensate system, wherein the condensate system comprises a desalted water storage tank and a condensate pump set which are sequentially communicated; the outlet pipeline of the desalted water storage tank is also communicated with a cooling water feeding pipeline which is communicated with the inlet pipelines of the two filter groups;
the cooling water supply pipeline comprises two parallel booster water pump sets, each booster water pump set comprises an inlet cut-off valve, a pilot valve, a filter, a booster water pump set pressure gauge, a check valve and an outlet cut-off valve which are sequentially communicated, and outlet pipelines of outlet cut-off valves of the two booster water pump sets are respectively communicated with two filter set front end pipelines after being connected in parallel.
Based on above technical scheme, the cooling water supply pipeline still is provided with the bypass pipeline, the inlet line intercommunication of bypass pipeline the inlet line of import trip valve, the outlet line intercommunication of bypass pipeline the outlet line of export trip valve, be provided with the ooff valve on the bypass pipeline.
Based on the technical scheme, two outlet pipelines of the outlet cut-off valve of the booster water pump set are connected with a cooling water supply pipeline pressure gauge after being connected in parallel.
Based on above technical scheme, the export pipeline of export trip valve after the line connection with filter group front end pipeline intercommunication department still is provided with the cooling water trip valve.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the utility model discloses a change cooling water intake system pipeline and water source can avoid the carbon black deposit of whole pyrolysis gas compressor cooling water supply system and the polymer deposit that the carbon black deposit leads to can solve the problem of the compressor import spiral case that carbon black and polymer deposit lead to and block up and the wearing and tearing of rotor terminal surface, guarantee the stability of pyrolysis gas compressor, normally and permanent operation, prolong the life and the maintenance cycle of compressor.
Drawings
FIG. 1 is a prior art cracked gas compressor cooling water supply system;
FIG. 2 is a schematic representation of the condensate system of a prior art charge gas cooling system;
FIG. 3 is a schematic structural diagram of a cooling water supply system of the cracked gas compressor of the present invention;
the reference numerals in the drawings denote: 1. an in-situ cooling water system; 2. a filter; 3. a filter group; 4. a secondary cracked gas compressor A; 5. a second stage cracked gas compressor B; 6. a desalted water storage tank; 7. a condensate pump; 8. a condensed water pump set; 9. a cooling water shut-off valve; 10. a cooling water supply pipeline pressure gauge; 11. an inlet shut-off valve; 12. a pilot shower valve; 13. a filter; 14. a booster water pump; 15. a pressure gauge of the booster water pump set; 16. a non-return valve; 17. an outlet shut-off valve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. Embodiments of the present invention include, but are not limited to, the following examples.
Examples
Fig. 1 shows a cooling water supply system for a cracked gas compressor in the prior art, cooling water is conveyed from an in-situ cooling water system 1 to a filter group 3 connected in parallel through a pipeline, the cooling water is conveyed to the cracked gas compressor after being filtered by a filter 2 in the filter group 3, the two filter groups 3 are respectively conveyed to a secondary cracked gas compressor A4 and a secondary cracked gas compressor B5, and the secondary cracked gas compressor A4 and the secondary cracked gas compressor B5 are utilized to spray water for cooling.
FIG. 2 is a schematic diagram of the condensate system of a prior art charge gas cooling system. The condensate system comprises a desalted water storage tank 6 and a condensate pump set 8 which are sequentially communicated, an inlet pipeline of the desalted water storage tank 6 is communicated with a desalted water supply pipeline (the temperature of desalted water in the pipeline is 35 ℃ and the pressure is 1.5 MPa) and a condensate water supply pipeline, a condensate pump 7 in the condensate pump set 8 conveys desalted water after the desalted water storage tank 6 is desalted and separated to a cooler of a pyrolysis gas cooling system, and condensate liquid supply is completed.
As shown in fig. 3, the cracked gas compressor cooling water supply system of the present embodiment includes a cooling water system, the cooling water system includes two filter groups 3 connected in parallel, and outlet pipelines of the two filter groups 3 are respectively communicated with two cracked gas compressors (a secondary cracked gas compressor A4 and a secondary cracked gas compressor B5);
the cooling water supply system of the pyrolysis gas compressor also comprises a condensate system, wherein the condensate system comprises a desalted water storage tank 6 and a condensate pump set 7 which are sequentially communicated; the outlet pipeline of the desalted water storage tank 6 is also communicated with a cooling water supply pipeline, as shown by a dotted line in fig. 3, and the cooling water supply pipeline is communicated with the inlet pipelines of the two filter groups 3;
the cooling water supply pipeline comprises two parallel pressurizing water pump sets, each pressurizing water pump set comprises an inlet stop valve 11, a pilot valve 12, a filter 13, a pressurizing water pump 14, a pressurizing water pump set pressure gauge 15, a check valve 16 and an outlet stop valve 17 which are sequentially communicated, and outlet pipelines of the outlet stop valves 17 of the two pressurizing water pump sets are respectively communicated with two front end pipelines of the filter sets 3 after being connected in parallel.
In the embodiment, the inlet cut-off valve 11 and the outlet cut-off valve 17 are used for cutting off the pipeline where the inlet cut-off valve and the outlet cut-off valve are located so as to be convenient for maintenance, the pilot shower valve 12 is used for discharging residual liquid or sediments in the pipeline, the filter 13 is used for filtering impurities of desalted water in the pipeline, the booster water pump 14 is used for boosting desalted water in the conveying pipeline, the pressure gauge 15 of the booster water pump group is used for detecting the pressure of the pipeline where the booster water pump 14 is located, and the check valve 16.
This embodiment changes pyrolysis gas compressor cooling water supply system's water source into the desalinized water, and utilize pyrolysis gas cooling system's condensate system to provide the desalinized water, make pyrolysis gas compressor cooling water supply system's quality of water guarantee to some extent, and only need increase pipeline, need not to redesign desalinized water and provide the pipeline, and is with low costs, can effectively solve the carbon black deposit of whole pyrolysis gas compressor cooling water supply system and the polymer deposition problem that the carbon black deposit leads to, the problem of the compressor import spiral case jam that carbon black and polymer deposition lead to and the wearing and tearing of rotor terminal surface also can be avoidd, fabulous protection compressor cooling water supply system's unobstructed and stable, also fabulous protection pyrolysis gas compressor.
In the embodiment, two parallel booster water pump sets are arranged, wherein two pipelines can be used, the loads of the two pipelines are reduced, only one pipeline can be used, and the other pipeline is closed and used for standby or during the maintenance of the other pipeline.
In this implementation, the cooling water supply pipeline still is provided with the bypass pipeline, the inlet line intercommunication of bypass pipeline the inlet line of import trip valve, the outlet line intercommunication of bypass pipeline the outlet line of export trip valve, be provided with the ooff valve on the bypass pipeline. The switch valve is used for controlling the opening and closing of the whole bypass pipeline, when two booster water pump sets are in trouble, and the pressure of the desalted water is too high or overhauled, the passages of the two booster water pump sets can be closed, and the switch valve is opened to convey desalted water by utilizing the bypass pipeline, so that the purposes of buffering pressure and continuous conveying are achieved.
In order to conveniently detect the pressure of the cooling water feeding pipeline header pipe, the outlet pipelines of the outlet cut-off valves 17 of the two booster water pump sets are connected with a cooling water feeding pipeline pressure gauge 10 after being connected in parallel. The cooling water supply pipeline pressure gauge 10 is arranged on the outlet pipeline of the outlet cut-off valve after the outlet pipeline is connected in parallel, and can detect the pressure in the pipeline of desalted water after the outlet pipeline is connected in parallel, so that the work of the booster water pump 14 can be better controlled, the pressure of the whole pipeline can be detected, and the desalted water can be ensured to enter the cracked gas compressor according to the preset pressure.
In order to conveniently control the on-off of the pipelines of the two cracking gas compressors, a cooling water cut-off valve 9 is further arranged at the position where the outlet pipelines of the outlet cut-off valve are communicated with the pipeline at the front end of the filter group after being connected in parallel. The cooling water cut-off valve 9 can respectively control the connection and disconnection of the pipelines communicated with the two cracked gas compressors, so that when the desalted water input of one cracked gas compressor needs to be cut off, the pipeline where the other cracked gas compressor is located is not affected and can be continuously used.
The above is the embodiment of the present invention. The foregoing is the preferred embodiments of the present invention, and if the preferred embodiments in the preferred embodiments are not obviously contradictory or are based on a certain preferred embodiment, the preferred embodiments can be combined and used by any superposition, the specific parameters in the embodiments and examples are only for the purpose of clearly expressing the utility model verification process of the utility model, and are not used for limiting the patent protection scope of the present invention, the patent protection scope of the present invention is still based on the claims, and all the equivalent structural changes made by the contents of the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A cooling water supply system for a cracked gas compressor comprises a cooling water system, wherein the cooling water system comprises two filter groups connected in parallel, and outlet pipelines of the two filter groups are respectively communicated with the two cracked gas compressors;
the method is characterized in that:
the cooling water supply system of the pyrolysis gas compressor also comprises a condensate system, wherein the condensate system comprises a desalted water storage tank and a condensate pump set which are sequentially communicated; the outlet pipeline of the desalted water storage tank is also communicated with a cooling water feeding pipeline which is communicated with the inlet pipelines of the two filter groups;
the cooling water supply pipeline comprises two parallel booster water pump sets, each booster water pump set comprises an inlet cut-off valve, a pilot valve, a filter, a booster water pump set pressure gauge, a check valve and an outlet cut-off valve which are sequentially communicated, and outlet pipelines of outlet cut-off valves of the two booster water pump sets are respectively communicated with two filter set front end pipelines after being connected in parallel.
2. The cracked gas compressor cooling water supply system of claim 1, wherein: the cooling water supply pipeline is further provided with a bypass pipeline, an inlet pipeline of the bypass pipeline is communicated with an inlet pipeline of the inlet stop valve, an outlet pipeline of the bypass pipeline is communicated with an outlet pipeline of the outlet stop valve, and the bypass pipeline is provided with a switch valve.
3. The cracked gas compressor cooling water supply system of claim 1, wherein: and outlet pipelines of outlet cut-off valves of the two booster water pump sets are connected with a cooling water supply pipeline pressure gauge after being connected in parallel.
4. The cracked gas compressor cooling water supply system of claim 1, wherein: and a cooling water shut-off valve is also arranged at the position communicated with the front end pipeline of the filter group after the outlet pipelines of the outlet shut-off valves are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921701755.9U CN210769551U (en) | 2019-10-12 | 2019-10-12 | Cooling water supply system for cracked gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921701755.9U CN210769551U (en) | 2019-10-12 | 2019-10-12 | Cooling water supply system for cracked gas compressor |
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| Publication Number | Publication Date |
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| CN210769551U true CN210769551U (en) | 2020-06-16 |
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| CN201921701755.9U Expired - Fee Related CN210769551U (en) | 2019-10-12 | 2019-10-12 | Cooling water supply system for cracked gas compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063390A (en) * | 2020-09-07 | 2020-12-11 | 广东韶钢松山股份有限公司 | Dry quenching circulating water pipeline backflow system and automatic pressurization method |
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2019
- 2019-10-12 CN CN201921701755.9U patent/CN210769551U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063390A (en) * | 2020-09-07 | 2020-12-11 | 广东韶钢松山股份有限公司 | Dry quenching circulating water pipeline backflow system and automatic pressurization method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 Termination date: 20201012 |