CN205024191U - Recovery unit of unqualified gas of LNG mill operation - Google Patents
Recovery unit of unqualified gas of LNG mill operation Download PDFInfo
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- CN205024191U CN205024191U CN201520792265.XU CN201520792265U CN205024191U CN 205024191 U CN205024191 U CN 205024191U CN 201520792265 U CN201520792265 U CN 201520792265U CN 205024191 U CN205024191 U CN 205024191U
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Abstract
The utility model discloses a recovery unit of unqualified gas of LNG mill operation, including raw materials gas separator, the tower is washed to amine, a compressor, around tubular heat exchanger and high -pressure natural gas heater, raw materials separator by freezing ware has connected gradually the demercuration tower, the tower is washed to mercury adsorption filter and amine, raw materials gas separator and connected gradually the feed gas desicator around the tubular heat exchanger between, dry gas filter and control valve, the control valve has still connected gradually between raw materials gas separator and the feed gas desicator, regeneration gas separator and regeneration gas cooler, regeneration gas separator passes through the compressor and connects the cooler respectively, amine is washed the tower and is wound tubular heat exchanger, high -pressure natural gas heater and control valve has connected gradually between tubular heat exchanger and regeneration gas separator. The utility model discloses device design is reasonable, carries out the recovery processing through the device with unqualified gas and recycles to the energy saving reduces the operation cost of liquefaction mill moreover, to the pollution of environment when reducing fuel gas and emptyying.
Description
Technical field
The utility model relates to LNG process gas recovery technology field, and specifically a kind of LNG factory goes into operation the retrieving arrangement of defective gas.
Background technology
When LNG factory drives and parking is gone into operation again, purification and liquefying plant all can produce defective gas of going into operation, for ensuring safety in production, prevent the generation of burst mishap, the Normal practice of liquefaction plant this part underproof natural gas straight was connected torch post combustion emission go out, and this not only causes
the energywaste, and cause the environmental influences such as certain light, heat and noise.For this reason, need, for the device situation that defective gas discharges in a large number when driving and parking is driven again, to existing technological transformation, to increase recovery system pipeline, material is recycled again.
Utility model content
The purpose of this utility model is to provide a kind of LNG factory to go into operation the retrieving arrangement of defective gas, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of LNG factory goes into operation the retrieving arrangement of defective gas, comprise feed gas separator, amine wash tower, compressor, wound tube heat exchanger and high-pressure natural gas well heater, described material separator is connected with water cooler, water cooler is connected with raw material inlet pipe, water cooler is also connected with demercuration tower, mercury adsorption filter and amine in turn and washes tower, the outlet that amine washes tower is connected on water cooler, unstripped gas moisture eliminator is connected with in turn between described feed gas separator and wound tube heat exchanger, dry gas strainer and the 5th control valve, the first control valve is also connected with in turn between described feed gas separator and unstripped gas moisture eliminator, resurgent gases separator and resurgent gases water cooler, the outlet of described resurgent gases separator connects water cooler respectively by compressor, amine washes tower and wound tube heat exchanger, second control valve is installed between resurgent gases separator and water cooler, resurgent gases separator and amine are washed between tower and are provided with the 3rd control valve, 7th control valve is installed between regeneration separators and wound tube heat exchanger, the outlet pipe of wound tube heat exchanger is provided with the 9th control valve, high-pressure natural gas well heater and the 6th control valve is connected with in turn between the outlet of wound tube heat exchanger and the outlet of resurgent gases separator, the 4th control valve is connected with between the outlet of described dry gas strainer and the outlet of resurgent gases separator.
As further program of the utility model: connect downstream user by the 8th control valve between described 6th control valve and the outlet of resurgent gases separator.
As further program of the utility model: described unstripped gas moisture eliminator is parallel is provided with two, and the import of unstripped gas moisture eliminator and outlet are all provided with control valve.
As the utility model further scheme: the control valve being arranged on the import of unstripped gas moisture eliminator walks abreast and is provided with two.
Compared with prior art, the beneficial effects of the utility model are: apparatus of the present invention are reasonable in design, by this device, defective gas is carried out recycling recycling, thus save energy, avoid the waste of resource, and reduce the investment cost of liquefaction plant, the pollution to environment during minimizing fuel gas emptying.
Accompanying drawing explanation
Fig. 1 is that LNG factory goes into operation the retrieving arrangement schema of defective gas.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of LNG factory goes into operation the retrieving arrangement of defective gas, comprise feed gas separator 10, amine wash tower 11, compressor 12, wound tube heat exchanger 13 and high-pressure natural gas well heater 14, material separator 10 is connected with water cooler 15, water cooler 15 is connected with raw material inlet pipe 16, water cooler 15 is also connected with demercuration tower 17, mercury adsorption filter 18 and amine in turn and washes tower 11, the outlet that amine washes tower 11 is connected on water cooler 15.
Unstripped gas moisture eliminator 19, dry gas strainer 20 and the 5th control valve 5 is connected with in turn between feed gas separator 10 and wound tube heat exchanger 13, unstripped gas moisture eliminator 19 is parallel is provided with two, and the import of unstripped gas moisture eliminator 19 and outlet are all provided with control valve 21.
The first control valve 1 is also connected with in turn between feed gas separator 10 and unstripped gas moisture eliminator 19, resurgent gases separator 22 and resurgent gases water cooler 23, the outlet of resurgent gases separator 22 connects water cooler 15 respectively by compressor 12, amine washes tower 11 and wound tube heat exchanger 13, second control valve 2 is installed between resurgent gases separator 22 and water cooler 15, resurgent gases separator 22 and amine are washed between tower 11 and are provided with the 3rd control valve 3, 7th control valve 7 is installed between regeneration separators 22 and wound tube heat exchanger 13, the outlet pipe of wound tube heat exchanger 13 is provided with the 9th control valve 9, high-pressure natural gas well heater 14 and the 6th control valve 6 is connected with in turn between the outlet of wound tube heat exchanger 13 and the outlet of resurgent gases separator 22, the 4th control valve 4 is connected with between the outlet of dry gas strainer 20 and the outlet of resurgent gases separator 22.Downstream user is connected by the 8th control valve 8 between 6th control valve 6 and the outlet of resurgent gases separator 22.
As shown in Figure 1:
1, the defective gas disposal of decarburization, CO in Sweet natural gas
2han Liang≤50ppm
The first incoming stock gas separating device 10 of defective gas after carbonization treatment, isolate the Sweet natural gas after condensed water from feed gas separator 10 top by the first control valve 1, after compressor 12 supercharging, return amine by the second control valve 2 and wash tower 11 entrance, until CO in purified gas
2content is down to that the decarburization of below 50ppm unstripped gas is qualified enters dewatering process device.
2, to dewater defective gas disposal, water Han Liang≤1ppm in Sweet natural gas
Open the 4th control valve 4 that dry gas strainer 20 exports by-pass line, unstripped gas is after unstripped gas moisture eliminator 19 processed, defective gas is through compressor 12 supercharging, the front end that amine washes tower 11 is entered through the second control valve 2, also wash tower 11 through amine again after squeezing into demercuration tower 17 process by the 3rd control valve 3 again to dewater, until water-content is qualified lower than unstripped gas dehydration after 1ppm in purified gas, open the 5th control valve 5, the qualified Sweet natural gas that dewaters enters liquefaction process device.
3, to liquefy Wen Du≤-70 DEG C of defective gas disposal, Sweet natural gas
The defective gas of operation of liquefaction process device directly cannot enter LNG storage tank through the 9th control valve 9, after defective gas flows out from wound tube heat exchanger 13, open the 6th control valve 6, to be liquefied after defective gas re-heat by high-pressure natural gas well heater 14 and utilize compressor 12 supercharging, open the 7th control valve 7, the dry gas after supercharging enters wound tube heat exchanger 13 front end and again liquefies; Also the 8th control valve 8 can be opened, the outer defeated pipe network supply downstream user of gas utilization after re-heat.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (4)
1. a LNG factory goes into operation the retrieving arrangement of defective gas, comprise feed gas separator, amine wash tower, compressor, wound tube heat exchanger and high-pressure natural gas well heater, it is characterized in that, described material separator is connected with water cooler, water cooler is connected with raw material inlet pipe, water cooler is also connected with demercuration tower, mercury adsorption filter and amine in turn and washes tower, the outlet that amine washes tower is connected on water cooler, unstripped gas moisture eliminator is connected with in turn between described feed gas separator and wound tube heat exchanger, dry gas strainer and the 5th control valve, the first control valve is also connected with in turn between described feed gas separator and unstripped gas moisture eliminator, resurgent gases separator and resurgent gases water cooler, the outlet of described resurgent gases separator connects water cooler respectively by compressor, amine washes tower and wound tube heat exchanger, second control valve is installed between resurgent gases separator and water cooler, resurgent gases separator and amine are washed between tower and are provided with the 3rd control valve, 7th control valve is installed between regeneration separators and wound tube heat exchanger, the outlet pipe of wound tube heat exchanger is provided with the 9th control valve, high-pressure natural gas well heater and the 6th control valve is connected with in turn between the outlet of wound tube heat exchanger and the outlet of resurgent gases separator, the 4th control valve is connected with between the outlet of described dry gas strainer and the outlet of resurgent gases separator.
2. LNG factory according to claim 1 goes into operation the retrieving arrangement of defective gas, it is characterized in that, connects downstream user between described 6th control valve and the outlet of resurgent gases separator by the 8th control valve.
3. LNG factory according to claim 1 goes into operation the retrieving arrangement of defective gas, it is characterized in that, described unstripped gas moisture eliminator is parallel is provided with two, and the import of unstripped gas moisture eliminator and outlet are all provided with control valve.
4. LNG factory according to claim 1 goes into operation the retrieving arrangement of defective gas, it is characterized in that, is arranged on that the control valve of unstripped gas moisture eliminator import is parallel is provided with two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520792265.XU CN205024191U (en) | 2015-10-15 | 2015-10-15 | Recovery unit of unqualified gas of LNG mill operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520792265.XU CN205024191U (en) | 2015-10-15 | 2015-10-15 | Recovery unit of unqualified gas of LNG mill operation |
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| Publication Number | Publication Date |
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| CN205024191U true CN205024191U (en) | 2016-02-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865145A (en) * | 2016-04-22 | 2016-08-17 | 晋城华港燃气有限公司 | Coalbed methane liquefaction process |
-
2015
- 2015-10-15 CN CN201520792265.XU patent/CN205024191U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865145A (en) * | 2016-04-22 | 2016-08-17 | 晋城华港燃气有限公司 | Coalbed methane liquefaction process |
| CN105865145B (en) * | 2016-04-22 | 2019-08-09 | 晋城华港燃气有限公司 | A kind of coal gas gasification technique |
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