CN204873823U - Coke oven gas system liquefied natural gas's rich hydrogen tail gas processing apparatus - Google Patents
Coke oven gas system liquefied natural gas's rich hydrogen tail gas processing apparatus Download PDFInfo
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- CN204873823U CN204873823U CN201520530147.1U CN201520530147U CN204873823U CN 204873823 U CN204873823 U CN 204873823U CN 201520530147 U CN201520530147 U CN 201520530147U CN 204873823 U CN204873823 U CN 204873823U
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Abstract
The utility model provides a coke oven gas system liquefied natural gas's rich hydrogen tail gas processing apparatus, belongs to gas separation and clarification plant technical field for rich hydrogen tail gas to coke oven gas system liquefied natural gas separates the utilization. Its technical scheme is: the feed gas heater is connected with rich hydrogen tail gas output pipeline, and the gas outlet of feed gas heater is connected through the air inlet of pipeline with the adsorber bottom, and the adsorber intussuseption is filled with the adsorbent, and the top of adsorber is connected with product gas buffer tank, the lower part of adsorber with separate the gassing buffer tank and be connected, product gas buffer tank, separate the gassing buffer tank and be connected with product gas collection device reconciliation gassing collection device respectively. The utility model discloses an advance pressure swing adsorption technique is carried out pressure swing adsorption to liquefied natural gas's rich hydrogen tail gas and is handled, therefrom isolate high -purity hydrogen and recycle, greatly increased the economic benefits of enterprise, avoided the direct environmental pollution who diffuses or burn and cause to the atmosphere of rich hydrogen tail gas simultaneously, apparent social has.
Description
Technical field
The utility model relates to a kind of device processed the hydrogen rich off gas of coke-oven gas preparing liquefied natural gas, belongs to gas delivery and purification technology field.
Background technology
In the production process of coke-oven gas preparing liquefied natural gas, can produce with natural gas liquids the tail gas being rich in hydrogen.The processing mode of traditional by-product tail gas for natural gas liquids is mainly directly to airborne release with carry out post combustion emission; these processing modes waste valuable resource on the one hand; pollute atmospheric environment on the other hand, the needs of the Economic Development that has been far from suitable and the theory of increasing conservation of nature environment.Meanwhile, pressure swing adsorption is developed rapidly in recent years, pressure swing adsorption process is called for short PSA, it is the technological process that gaseous mixture is purified, this technique is to based on the physical adsorption of gas molecule by porous solid material (sorbent material) interior surface, the reversible physical adsorption process worked between two kinds of pressure states, it under high pressure has larger adsorptive power according to impurities from mixed gas component, under low pressure there is again less adsorptive power, desirable component N2 is then the principle that high pressure or low pressure all have less adsorptive power.Under high pressure, increase impurities partial pressure to be tried one's best many being adsorbed on sorbent material, thus reach high product purity.Desorb or the regeneration of sorbent material are under low pressure carried out, and reduce the residual volume of impurity on sorbent material, so that at next circulation adsorbing contaminant again as far as possible.According to pressure-variable adsorption ratio juris; if the hydrogen rich off gas of natural gas liquids can be processed by pressure swing adsorption process; highly purified hydrogen is extracted from hydrogen rich off gas; namely the economic worth of hydrogen rich off gas can fully be excavated; the effect of environment protection can be reached again, realize the win-win situation of economic benefit and social benefit.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of hydrogen rich off gas treatment unit of coke-oven gas preparing liquefied natural gas, this device can carry out pressure-variable adsorption process to the hydrogen rich off gas produced in the liquefaction process of natural gas liquids, therefrom be separated high-purity hydrogen, to increase the performance of enterprises, avoid the environmental pollution of diffusing to air or burn processing causes simultaneously.
The technical scheme solved the problems of the technologies described above is:
A kind of hydrogen rich off gas treatment unit of coke-oven gas preparing liquefied natural gas, it comprises unstripped gas well heater, adsorber, gas product surge tank, resolution gas surge tank, the inlet mouth of unstripped gas well heater is connected with the hydrogen rich off gas output channel of natural gas liquids, the air outlet of unstripped gas well heater is connected with the inlet mouth of absorber bottoms by pipeline, sorbent material is filled with in adsorber, the top of adsorber has hydrogen discharge pipe road to be connected with gas product surge tank, the bottom of adsorber has resolution gas discharge line to be connected with resolution gas surge tank, gas product surge tank, resolution gas surge tank is connected with resolution gas collection device with gas product collection device respectively.
The hydrogen rich off gas treatment unit of above-mentioned coke-oven gas preparing liquefied natural gas, described adsorber is 3-8,3-8 adsorber is in parallel, be connected with the outlet pipe of unstripped gas well heater after their intake ducting parallel connection, their gas product discharge line, resolution gas discharge line are in parallel to be respectively connected with the intake ducting of gas product surge tank, resolution gas surge tank afterwards.
The hydrogen rich off gas treatment unit of above-mentioned coke-oven gas preparing liquefied natural gas, described adsorber is filled with sorbent material, and adsorber and multistage pressure pipeline, along putting pipeline, inverse put pipeline, flushing pipeline be connected.
The beneficial effects of the utility model are:
The utility model changes the hydrogen rich off gas treatment process of existing coke-oven gas preparing liquefied natural gas, adopt advanced pressure swing adsorption, the hydrogen rich off gas of natural gas liquids is carried out pressure-variable adsorption process, therefrom isolate high-purity hydrogen, the purity of high-purity hydrogen reaches 99.999% high level, high-purity hydrogen recycles after steel cylinder is filling, considerably increase the economic benefit of enterprise, avoid the environmental pollution that hydrogen rich off gas diffuses directly to air or burn processing causes simultaneously, there is significant social benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, mark is as follows: unstripped gas entrance 1, unstripped gas well heater 2, adsorber 3, gas product surge tank 4, resolution gas surge tank 5, gas product collection device 6, resolution gas collection device 7.
Embodiment
The utility model is made up of unstripped gas well heater 2, adsorber 3, gas product surge tank 4, resolution gas surge tank 5, gas product collection device 6, resolution gas collection device 7.
Show in figure, the inlet mouth of unstripped gas well heater 2 is connected with the hydrogen rich off gas output channel of natural gas liquids, unstripped gas enters into unstripped gas well heater 2 from unstripped gas entrance 1, and unstripped gas enters adsorber 3 and carries out hydrogen purification after unstripped gas well heater 2 is heated to 20 ~ 40 DEG C.
Show in figure, the air outlet of unstripped gas well heater 2 is connected with the inlet mouth bottom adsorber 3 by pipeline, the top of adsorber 3 has hydrogen discharge pipe road to be connected with gas product surge tank 4, the bottom of adsorber 3 has resolution gas discharge line to be connected with resolution gas surge tank 5, and gas product surge tank 4, resolution gas surge tank 5 are connected with resolution gas collection device 7 with gas product collection device 6 respectively.
Show in figure, adsorber is 3-5, and 3-5 adsorber is in parallel, and adsorber is filled with sorbent material, adsorber and multistage pressure pipeline, suitablely put pipeline, inverse put pipeline, flushing pipeline be connected.The embodiment of the present utility model shown in figure adopts 5 adsorbers 3 to carry out pressure-variable adsorption.
Working process of the present utility model is as follows:
Unstripped gas, after unstripped gas well heater 2, passes through and enters adsorber 3 purifying hydrogen of hydrogen at 20 ~ 40 DEG C.Unstripped gas enters in adsorber 3 bottom adsorber 3, and impurity composition is removed by adsorbent, and difficult absorbed component hydrogen is gone out from adsorber 3 top and obtained product hydrogen.In adsorber 3, each adsorber experiences absorption successively at different time, multistage pressure equilibrium is fallen, along putting, inverse put, flushing, multistage pressure equilibrium rise and the step such as final boosting.Inverse put step discharges the partial impurities component of occlusion in adsorber 3, and remaining impurity is by the complete desorb of rinse step.Resolution gas surge tank 5 is entered at the gas of inverse put pressure higher stage in early stage, device without inverse put or purge gas less time send battery limit (BL) by variable valve, the higher gas of inverse put pressure in early stage after resolution gas surge tank 5 cushions by variable valve together with purge gas about 0.03MPa, 20 ~ 40 DEG C send battery limit (BL).
Claims (3)
1. the hydrogen rich off gas treatment unit of a coke-oven gas preparing liquefied natural gas, it is characterized in that: it comprises unstripped gas well heater (2), adsorber (3), gas product surge tank (4), resolution gas surge tank (5), the inlet mouth of unstripped gas well heater (2) is connected with the hydrogen rich off gas output channel of natural gas liquids, the air outlet of unstripped gas well heater (2) is connected by the inlet mouth of pipeline with adsorber (3) bottom, adsorber is filled with sorbent material in (3), the top of adsorber (3) has hydrogen discharge pipe road to be connected with gas product surge tank (4), the bottom of adsorber (3) has resolution gas discharge line to be connected with resolution gas surge tank (5), gas product surge tank (4), resolution gas surge tank (5) is connected with resolution gas collection device (7) with gas product collection device (6) respectively.
2. the hydrogen rich off gas treatment unit of coke-oven gas preparing liquefied natural gas according to claim 1, it is characterized in that: described adsorber (3) is 3-5,3-5 adsorber (3) is in parallel, be connected with the outlet pipe of unstripped gas well heater (2) after their intake ducting parallel connection, be connected with the intake ducting of gas product surge tank (4), resolution gas surge tank (5) after their gas product discharge line, resolution gas discharge line difference are in parallel.
3. the hydrogen rich off gas treatment unit of coke-oven gas preparing liquefied natural gas according to claim 2, it is characterized in that: described adsorber (3) is filled with sorbent material, adsorber (3) and multistage pressure pipeline, along putting pipeline, inverse put pipeline, flushing pipeline be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530147.1U CN204873823U (en) | 2015-07-21 | 2015-07-21 | Coke oven gas system liquefied natural gas's rich hydrogen tail gas processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530147.1U CN204873823U (en) | 2015-07-21 | 2015-07-21 | Coke oven gas system liquefied natural gas's rich hydrogen tail gas processing apparatus |
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| CN204873823U true CN204873823U (en) | 2015-12-16 |
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| CN201520530147.1U Active CN204873823U (en) | 2015-07-21 | 2015-07-21 | Coke oven gas system liquefied natural gas's rich hydrogen tail gas processing apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437104A (en) * | 2018-12-27 | 2019-03-08 | 浙江海畅气体有限公司 | A kind of device of quick Production of High-purity Hydrogen |
| CN109666520A (en) * | 2019-01-28 | 2019-04-23 | 安庆市泰发能源科技有限公司 | Butane dehydrogenation hydrogen rich off gas recycle device |
-
2015
- 2015-07-21 CN CN201520530147.1U patent/CN204873823U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437104A (en) * | 2018-12-27 | 2019-03-08 | 浙江海畅气体有限公司 | A kind of device of quick Production of High-purity Hydrogen |
| CN109666520A (en) * | 2019-01-28 | 2019-04-23 | 安庆市泰发能源科技有限公司 | Butane dehydrogenation hydrogen rich off gas recycle device |
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| C14 | Grant of patent or utility model | ||
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