CN203307306U - Process device for removing heavy hydrocarbon out of natural gas by LPG (Liquefied Petroleum Gas) - Google Patents
Process device for removing heavy hydrocarbon out of natural gas by LPG (Liquefied Petroleum Gas) Download PDFInfo
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- CN203307306U CN203307306U CN2013203192682U CN201320319268U CN203307306U CN 203307306 U CN203307306 U CN 203307306U CN 2013203192682 U CN2013203192682 U CN 2013203192682U CN 201320319268 U CN201320319268 U CN 201320319268U CN 203307306 U CN203307306 U CN 203307306U
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- heavy hydrocarbon
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Abstract
The utility model discloses a process device for removing heavy hydrocarbon out of natural gas by LPG (Liquefied Petroleum Gas) in natural gas liquefying process. The device comprises a heavy hydrocarbon washing tower, a dethanizing column and debutanizing column, wherein the heavy hydrocarbon washing tower is sequentially connected with a throttling valve, a cooler, the dethanizing column and the debutanizing column. The top outlet of the debutanizing column is sequentially connected with a debutanizing column condenser, a debutanizing column return tank, a debutanizing column reflux pump and an upper inlet of the debutanizing column. The debutanizing column return tank is connected with the upper inlet of the heavy hydrocarbon washing tower through an LPG pressurizing pump. The device disclosed by the utility model has the advantages that the LPG product produced in the device is used for washing natural gas, and the source of the LPG product is stable and reliable; the heavy hydrocarbon removing effect is good, and heavy hydrocarbon component in the natural gas can be removed as much as possible to benefit subsequent liquefying process, so that heavy hydrocarbon is prevented from being frozen; the LPG heavy hydrocarbon removing process is simple in flow, and pre-treatment demand on liquefying depth of natural gas can be reached by absorption and mass transfer, so that the demand on liquefaction of natural gas is satisfied.
Description
Technical field
The utility model relates in a kind of gas deliquescence process the process unit that adopts LPG to remove heavy hydrocarbon in Sweet natural gas, special in for the large-scale natural gas liquefaction process, removing the device of heavy hydrocarbon.
Background technology
Sweet natural gas all must be through degree of depth pre-treatment before liquefaction, comprising removing contained heavy hydrocarbon component, thereby effectively avoid Sweet natural gas impurity in liquefaction process to cause frozen block, especially heavy hydrocarbon component condensation under low temperature environment, freeze and the equipment such as blocking pipe, valve and plate-fin heat exchanger.Existing natural qi exhaustion heavy hydrocarbon method mainly contains rectification method and absorption method both at home and abroad at present.While adopting absorption method to remove the technique of heavy hydrocarbon in Sweet natural gas, it removes performance and mainly by kind, adsorbent capacity and the reconstituted form of its sorbent material, is determined.Although the absorbing process technology is comparatively ripe, can reach the natural gas liquefaction gas quality index, this technique needs two adsorption towers to carry out switchover operation simultaneously at least, and needs simultaneously the resurgent gases thermal source, and investment and energy consumption are large.In the de-Sweet natural gas of rectification method, the technique of heavy hydrocarbon is to utilize principles of rectification, in tower, utilizes heavy hydrocarbon different with the Sweet natural gas relative volatility, the method that the heavy hydrocarbon component in Sweet natural gas is removed.Typical rectificating method had both needed at the bottom of tower to add thermogravimetric and had boiled, and needs again the tower top cold flow to reflux, thereby overhead condenser, return tank and reflux pump need be set, and at the bottom of tower, the heating reboiler need be set.Described two kinds contain shortcoming that the heavy hydrocarbon Sweet natural gas removes heavy hydrocarbon technique to be investment large, and energy consumption is high, and required equipment is many, and the flow process complexity is unfavorable for saving energy and reduce the cost.
The utility model content
The utility model has overcome shortcoming of the prior art, provides in a kind of gas deliquescence process and has adopted LPG to remove the process unit of the heavy hydrocarbon in Sweet natural gas, has the features such as energy consumption is low, product diversification, the natural gas hydrocarbons dew point is low, gross investment is low.
The technical solution of the utility model is: a kind of LPG removes the process unit of heavy hydrocarbon in Sweet natural gas, comprises heavy hydrocarbon washing tower, deethanizing column and debutanizing tower, and wherein: described heavy hydrocarbon washing tower is connected with throttling valve, water cooler, deethanizing column and debutanizing tower successively; The debutanizing tower top exit is connected with debutanizing tower condenser, debutanizing tower return tank, debutanizing tower reflux pump and debutanizing tower upper inlet successively; The debutanizing tower return tank is connected with heavy hydrocarbon washing tower upper inlet through the LPG topping-up pump.
Compared with prior art, the utility model has the advantages that: the LPG product of producing in use device washs, and the LPG rule of origin is reliable and stable, compares with the de-heavy hydrocarbon technique of silica gel, and cost is low, manufacturing schedule is short, and total investment of engineering declines to a great extent; The heavy hydrocarbon removal effect is good, and the heavy hydrocarbon component in Sweet natural gas is removed as much as possible, is conducive to follow-up liquefaction process, effectively avoids heavy hydrocarbon generation frozen block; Can optimize product structure, and effectively utilize product; It is simple that LPG removes the heavy hydrocarbon technical process, reduced investment, more traditionally remove heavy hydrocarbon technical process in Sweet natural gas and greatly simplify, and reduced the relevant devices such as condenser and return tank, by absorbing mass transfer, can reach natural gas liquefaction degree of depth pre-treatment requirement, meet the needs of natural gas liquefaction.
The accompanying drawing explanation
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of LPG removes the process unit of heavy hydrocarbon in Sweet natural gas, as shown in Figure 1, comprising: condenser 12 and throttling valve 13 at the bottom of heavy hydrocarbon washing tower 1, water cooler 2, deethanizing column 3, deethanizing column reflux pump 4, deethanizing column return tank 5, deethanizing column condenser 6, debutanizing tower 7, debutanizing tower condenser 8, debutanizing tower return tank 9, debutanizing tower reflux pump 10, LPG topping-up pump 11, debutanizing tower.Wherein:
Heavy hydrocarbon washing tower 1 is connected with condenser 12 at the bottom of throttling valve 13, water cooler 2, deethanizing column 3, debutanizing tower 7 and debutanizing tower successively; Deethanizing column 3 top exits are connected with deethanizing column condenser 6, deethanizing column return tank 5, deethanizing column reflux pump 4 and deethanizing column 3 upper inlet successively; Debutanizing tower 7 top exits are connected with debutanizing tower condenser 8, debutanizing tower return tank 9, debutanizing tower reflux pump 10 and debutanizing tower 7 upper inlet successively; Debutanizing tower return tank 9 is connected with heavy hydrocarbon washing tower 1 upper inlet through LPG topping-up pump 11.
Described heavy hydrocarbon washing tower can be both that packing tower can be also tray column.
Claims (4)
1. a LPG removes the process unit of heavy hydrocarbon in Sweet natural gas, and it is characterized in that: comprise heavy hydrocarbon washing tower, deethanizing column and debutanizing tower, wherein: described heavy hydrocarbon washing tower is connected with throttling valve, water cooler, deethanizing column and debutanizing tower successively; The debutanizing tower top exit is connected with debutanizing tower condenser, debutanizing tower return tank, debutanizing tower reflux pump and debutanizing tower upper inlet successively; The debutanizing tower return tank is connected with heavy hydrocarbon washing tower upper inlet through the LPG topping-up pump.
2. a kind of LPG according to claim 1 removes the process unit of heavy hydrocarbon in Sweet natural gas, it is characterized in that: described deethanizing column top exit is connected with deethanizing column condenser, deethanizing column return tank, deethanizing column reflux pump and deethanizing column upper inlet successively.
3. a kind of LPG according to claim 1 removes the process unit of heavy hydrocarbon in Sweet natural gas, it is characterized in that: described heavy hydrocarbon washing tower is packing tower or tray column.
4. a kind of LPG according to claim 1 removes the process unit of heavy hydrocarbon in Sweet natural gas, it is characterized in that: described debutanizing tower outlet at bottom is connected with condenser at the bottom of debutanizing tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203192682U CN203307306U (en) | 2013-06-05 | 2013-06-05 | Process device for removing heavy hydrocarbon out of natural gas by LPG (Liquefied Petroleum Gas) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203192682U CN203307306U (en) | 2013-06-05 | 2013-06-05 | Process device for removing heavy hydrocarbon out of natural gas by LPG (Liquefied Petroleum Gas) |
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| Publication Number | Publication Date |
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| CN203307306U true CN203307306U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203192682U Expired - Lifetime CN203307306U (en) | 2013-06-05 | 2013-06-05 | Process device for removing heavy hydrocarbon out of natural gas by LPG (Liquefied Petroleum Gas) |
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| CN (1) | CN203307306U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265987A (en) * | 2013-06-05 | 2013-08-28 | 中国石油集团工程设计有限责任公司 | Process device and method for removing heavy hydrocarbon in natural gas by adopting LPG (Liquefied Petroleum Gas) |
| CN110631326A (en) * | 2019-10-09 | 2019-12-31 | 北京恒泰洁能科技有限公司 | Fischer-Tropsch synthesis tail gas recycling system process |
-
2013
- 2013-06-05 CN CN2013203192682U patent/CN203307306U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265987A (en) * | 2013-06-05 | 2013-08-28 | 中国石油集团工程设计有限责任公司 | Process device and method for removing heavy hydrocarbon in natural gas by adopting LPG (Liquefied Petroleum Gas) |
| CN110631326A (en) * | 2019-10-09 | 2019-12-31 | 北京恒泰洁能科技有限公司 | Fischer-Tropsch synthesis tail gas recycling system process |
| CN110631326B (en) * | 2019-10-09 | 2021-05-04 | 北京恒泰洁能科技有限公司 | Fischer-Tropsch synthesis tail gas recycling system process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180115 Address after: 610041 Chengdu high tech Zone, Sichuan province sublimation Road No. 6 Patentee after: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. Address before: 610041 Chengdu high tech Zone, Sichuan province sublimation Road No. 6 Patentee before: CNPC ENGINEERING DESIGN Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |