CN204874438U - LNG is clean system in advance - Google Patents
LNG is clean system in advance Download PDFInfo
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- CN204874438U CN204874438U CN201520530715.8U CN201520530715U CN204874438U CN 204874438 U CN204874438 U CN 204874438U CN 201520530715 U CN201520530715 U CN 201520530715U CN 204874438 U CN204874438 U CN 204874438U
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- absorption unit
- adsorption tower
- temperature swing
- swing absorption
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Abstract
The utility model relates to a LNG is clean system in advance, this system include one -level alternating temperature adsorption equipment and second grade alternating temperature adsorption equipment, regeneration gas deoiling tower, one -level alternating temperature adsorption equipment and second grade alternating temperature adsorption equipment all are by main adsorption tower and vice adsorption tower and regenerative heater, the regenerative cooling ware, the constitution is connected to the regeneration separator, alternating temperature adsorption equipment through the serial -type connection, the make full use of adsorption tower, regenerative heater, the regeneration gas cooler, regeneration gas separator, how realization adsorbent reactivation such as regeneration gas deoiling tower takes off the precision and reach high deoiling, the life of adsorbent has been prolonged, the continuity of equipment operation and the smooth production of LNG production line have been guaranteed.
Description
Technical field
The utility model belongs to LNG raw material gas purifying studying technological domain, is specifically related to a kind of LNG preliminary cleaning system.
Background technology
In LNG (natural gas liquids) coke-oven gas, rich hydrogen lacks carbon, containing compositions such as tar, naphthalene, sulphur, usually select special typed active carbon sorbent material in de-oiling and de-naphthalene tower, remove the impurity such as tar in coke-oven gas and naphthalene when purifying, but the acticarbon normally single use be contained in de-oiling and de-naphthalene tower, about about 140 days of duration of service, therefore, the work-ing life of sorbent material is shorter, recycling, does not cause system operation cost higher.
Summary of the invention
For above present situation, the utility model provides the impurity in a kind of efficient removal coke-oven gas, and oil removing is de-, and how precision is high, extends sorbent material work-ing life and can reuse the LNG preliminary cleaning system of sorbent material.
The utility model realizes the technical scheme that above-mentioned purpose adopts: this kind of LNG preliminary cleaning system, comprises one-level temperature swing absorption unit and secondary temperature swing absorption unit, resurgent gases oil removing tower;
Described one-level temperature swing absorption unit is identical with the structure of secondary temperature swing absorption unit, is all to be connected and composed by main adsorption tower and secondary adsorption tower and regenerative heater, resurgent gases water cooler, regeneration separators; Wherein, main adsorption tower and secondary adsorption tower are connected in parallel, the resurgent gases entrance of main adsorption tower and secondary adsorption tower is respectively by the resurgent gases outlet of pipeline and regenerative heater, main adsorption tower is communicated with the resurgent gases entrance of resurgent gases water cooler respectively by pipeline with the resurgent gases outlet of secondary adsorption tower, the resurgent gases outlet of resurgent gases water cooler is communicated with the entrance of regeneration separators by pipeline, and the resurgent gases outlet of regeneration separators is communicated with by the resurgent gases entrance of pipeline with resurgent gases oil removing tower;
The main adsorption tower of above-mentioned one-level temperature swing absorption unit is communicated with LNG gas inlet at the bottom of the main adsorption tower of secondary temperature swing absorption unit, secondary adsorption tower tower by pipeline with the primary purifying pneumatic outlet corresponding to secondary adsorption tower, meanwhile, the regeneration separators resurgent gases outlet of this secondary temperature swing absorption unit is communicated with the resurgent gases entrance of the regenerative heater of one-level temperature swing absorption unit by pipeline.
This systematize also comprises three grades of temperature swing absorption unit, and the structure of described three grades of temperature swing absorption unit is identical with the structure of one-level temperature swing absorption unit, and three grades of temperature swing absorption unit are that tandem is connected with secondary temperature swing absorption unit, one-level temperature swing absorption unit.
The temperature swing absorption unit that the LNG preliminary cleaning system that the utility model provides is connected by tandem, make full use of adsorption tower, regenerative heater, resurgent gases water cooler, resurgent gases separator, resurgent gases oil removing tower etc. realize adsorbent reactivation and reach the de-how precision of high oil removing, extend the work-ing life of sorbent material, the smooth production of the continuity that the equipment that ensure that runs and LNG production line.
Accompanying drawing explanation
Fig. 1 is the structure flow chart of embodiment 1.
Fig. 2 is the structural representation of the first temperature swing absorption unit in Fig. 1.
Embodiment
Now in conjunction with the accompanying drawings and embodiments the technical solution of the utility model is further described, but the utility model is not limited only to following enforcement situation.
Embodiment 1
Combined from Fig. 1 ~ 2, the LNG preliminary cleaning system of the present embodiment is connected and composed by one-level temperature swing absorption unit 1 and secondary temperature swing absorption unit 2, resurgent gases oil removing tower 3.
Wherein, one-level temperature swing absorption unit 1 comprises the main adsorption tower 1-1 of one-level and the secondary adsorption tower 1-2 of one-level and one-level resurgent gases water cooler 1-3, one-level regeneration separators 1-4, one-level regenerative heater 1-5, the main adsorption tower 1-1 of one-level and the secondary adsorption tower 1-2 of one-level is connected in parallel, the resurgent gases entrance of the secondary adsorption tower 1-2 of the main adsorption tower 1-1 of one-level and one-level is respectively by the resurgent gases outlet of pipeline and one-level regenerative heater 1-5, the main adsorption tower 1-1 of one-level is communicated with respectively by the resurgent gases entrance of pipeline with one-level resurgent gases water cooler 1-3 with the resurgent gases outlet of the secondary adsorption tower 1-2 of one-level, the resurgent gases outlet of one-level resurgent gases water cooler 1-3 is communicated with by the entrance of pipeline with one-level regeneration separators 1-4, the resurgent gases outlet of one-level regeneration separators 1-4 is communicated with by the resurgent gases entrance of pipeline with resurgent gases oil removing tower 3.
The structure of secondary temperature swing absorption unit 2 is identical with the structure of one-level temperature swing absorption unit 1, and this secondary temperature swing absorption unit 2 comprises the secondary adsorption tower of the main adsorption tower of secondary and secondary and secondary regenerator well heater, secondary regenerator Gas Cooler, secondary regenerator separator, the main adsorption tower of secondary and the secondary adsorption tower of secondary are also connected in parallel, corresponding identical with the structure of the secondary adsorption tower of the main adsorption tower of one-level and one-level, the main adsorption tower of this secondary is communicated with the primary purifying pneumatic outlet corresponding to the secondary adsorption tower 1-2 of one-level by the main adsorption tower 1-1 of pipeline and the one-level of one-level temperature swing absorption unit 1 with LNG gas inlet at the bottom of the tower of the secondary adsorption tower of secondary, the resurgent gases entrance of the secondary adsorption tower of the main adsorption tower of this secondary and secondary is respectively by the resurgent gases outlet of pipeline and secondary regenerator well heater, the main adsorption tower of secondary is communicated with the resurgent gases entrance of secondary regenerator Gas Cooler respectively by pipeline with the resurgent gases outlet of the secondary adsorption tower of secondary, the resurgent gases outlet of secondary regenerator Gas Cooler is communicated with by the entrance of pipeline with secondary regenerator separator, the resurgent gases outlet of secondary regenerator separator is communicated with the resurgent gases entrance of the regenerative heater of one-level temperature swing absorption unit 1 by pipeline.One-level resurgent gases water cooler 1-3, one-level regeneration separators 1-4, the one-level regenerative heater 1-5 of the secondary regenerator Gas Cooler of the present embodiment, secondary regenerator separator, secondary regenerator well heater and one-level temperature swing absorption unit 1 are corresponding identical, all belong to commercial equipment.
The scavenging process of above-mentioned LNG preliminary cleaning system is: enter in the main adsorption tower 1-1 of one-level of one-level the temperature swing absorption unit 1 and secondary adsorption tower 1-2 of one-level through adsorbent layer from raw material LNG gas out-of-bounds, the tar, naphthalene etc. of the overwhelming majority in unstripped gas is made to rest on adsorbent surface, micro-tar, naphthalene and all the other components flow out from the primary purifying pneumatic outlet of tower top, in the main adsorption tower of secondary sending into secondary temperature swing absorption unit 2 and the secondary adsorption tower of secondary, micro-tar, naphthalene remaining after removing coagulation further, thus obtain qualified purified gas.
The regenerative process of above-mentioned LNG preliminary cleaning system is: from resurgent gases out-of-bounds in secondary regenerator heater heats to the 120 ~ 150 DEG C main adsorption tower of saturated secondary entering secondary temperature swing absorption unit 2 against absorption direction and the secondary adsorption tower of secondary, the main adsorption tower of secondary and the secondary adsorption tower of secondary are heated, make the tar in sorbent material, the at high temperature desorb of the impurity such as naphthalene, and along with resurgent gases outflow, with the cold renewal gas of secondary regenerator Gas Cooler, blast-cold is carried out to the main adsorption tower of secondary and the secondary adsorption tower of secondary after heating, the main adsorption tower of secondary and the secondary adsorption tower of secondary is made to reach adsorption temp and again have the ability of tar and naphthalene, regenerate the resurgent gases of secondary temperature swing absorption unit 2 after secondary regenerator separator refrigerated separation, send into one-level temperature swing absorption unit 1 to use as resurgent gases, the regeneration flow process of one-level temperature swing absorption unit 1 is identical with the regeneration flow process of secondary temperature swing absorption unit 2, regenerate in the resurgent gases of one-level temperature swing absorption unit 1 containing a large amount of tar, the impurity such as naphthalene, tar is isolated through one-level resurgent gases oil removing tower 3, naphthalene etc., collect in tar collecting tank, completion system regenerates.
Embodiment 2
The LNG preliminary cleaning system of the present embodiment is connected and composed by resurgent gases oil removing tower 3, one-level temperature swing absorption unit 1, secondary temperature swing absorption unit 2 and three grades of temperature swing absorption unit.Three grades of temperature swing absorption unit of the present embodiment and one-level temperature swing absorption unit 1, the structure of secondary temperature swing absorption unit 2 is identical, with one-level temperature swing absorption unit 1, secondary temperature swing absorption unit 2 connects in tandem, connect mechanism identical with the connection mechanism of secondary temperature swing absorption unit 2 with one-level temperature swing absorption unit 1, specifically, three grades of main adsorption towers of three grades of temperature swing absorption unit are communicated with respectively by the primary purifying pneumatic outlet of pipeline with the secondary adsorption tower of the main adsorption tower of the secondary of secondary temperature swing absorption unit 2 and secondary with LNG gas inlet at the bottom of the tower of three grades of secondary adsorption towers, the main adsorption tower of secondary of secondary temperature swing absorption unit 2 is communicated with the primary purifying pneumatic outlet of the secondary adsorption tower 1-2 of one-level respectively by the main adsorption tower 1-1 of pipeline and the one-level of one-level temperature swing absorption unit 1 with LNG gas inlet at the bottom of the tower of the secondary adsorption tower of secondary, simultaneously, the resurgent gases outlet of three grades of regeneration separators is communicated with the resurgent gases entrance of the regenerative heater of secondary temperature swing absorption unit 2 by pipeline, and the resurgent gases outlet of secondary regenerator separator is communicated with the resurgent gases entrance of the regenerative heater of one-level temperature swing absorption unit 1 by pipeline.
Other parts and annexation and principle of work identical with embodiment 1.
The each device architecture do not described in detail in above-described embodiment and mode of connection all belong to common practise, all can obtain from prior art for those skilled in the art.
Claims (2)
1. a LNG preliminary cleaning system, is characterized in that: this system comprises one-level temperature swing absorption unit (1) and secondary temperature swing absorption unit (2), resurgent gases oil removing tower (3);
Described one-level temperature swing absorption unit (1) is identical with the structure of secondary temperature swing absorption unit (2), is all to be connected and composed by main adsorption tower and secondary adsorption tower and regenerative heater, resurgent gases water cooler, regeneration separators; Wherein, main adsorption tower and secondary adsorption tower are connected in parallel, the resurgent gases entrance of main adsorption tower and secondary adsorption tower is respectively by the resurgent gases outlet of pipeline and regenerative heater, main adsorption tower is communicated with the resurgent gases entrance of resurgent gases water cooler respectively by pipeline with the resurgent gases outlet of secondary adsorption tower, the resurgent gases outlet of resurgent gases water cooler is communicated with the entrance of regeneration separators by pipeline, and the resurgent gases outlet of regeneration separators is communicated with by the resurgent gases entrance of pipeline with resurgent gases oil removing tower (3);
The main adsorption tower of above-mentioned one-level temperature swing absorption unit (1) is communicated with LNG gas inlet at the bottom of the main adsorption tower of secondary temperature swing absorption unit (2), secondary adsorption tower tower by pipeline with the primary purifying pneumatic outlet corresponding to secondary adsorption tower, meanwhile, the regeneration separators resurgent gases outlet of this secondary temperature swing absorption unit (2) is communicated with by the resurgent gases entrance of pipeline with the regenerative heater of one-level temperature swing absorption unit (1).
2. LNG preliminary cleaning system according to claim 1, it is characterized in that: also comprise three grades of temperature swing absorption unit, the structure of described three grades of temperature swing absorption unit is identical with the structure of one-level temperature swing absorption unit (1), and three grades of temperature swing absorption unit are connected in tandem with secondary temperature swing absorption unit (2), one-level temperature swing absorption unit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530715.8U CN204874438U (en) | 2015-07-21 | 2015-07-21 | LNG is clean system in advance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530715.8U CN204874438U (en) | 2015-07-21 | 2015-07-21 | LNG is clean system in advance |
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| CN204874438U true CN204874438U (en) | 2015-12-16 |
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| CN201520530715.8U Expired - Fee Related CN204874438U (en) | 2015-07-21 | 2015-07-21 | LNG is clean system in advance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977235A (en) * | 2018-09-17 | 2018-12-11 | 陕西黑猫焦化股份有限公司 | A kind of method and device using impurity in temp.-change adsorptive process removing coal gas |
-
2015
- 2015-07-21 CN CN201520530715.8U patent/CN204874438U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977235A (en) * | 2018-09-17 | 2018-12-11 | 陕西黑猫焦化股份有限公司 | A kind of method and device using impurity in temp.-change adsorptive process removing coal gas |
| CN108977235B (en) * | 2018-09-17 | 2023-12-05 | 陕西黑猫焦化股份有限公司 | Method and device for removing impurities in coal gas by using temperature swing adsorption method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20190721 |
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| CF01 | Termination of patent right due to non-payment of annual fee |