Pressure swing adsorption method of separating and recovering C3+ hydrocarbons from C3+ hydrocarbons contained mixture gas

A technology of mixed gas, separation and recovery, used in adsorption purification/separation, organic chemistry, etc.

Inactive Publication Date: 2007-03-07
四川开元科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to provide a kind of from containing C 3 + Hydrocarbon mixed gas separation and recovery C 3 + The pressure swing adsorption method of hydrocarbons is used to solve the mixed gas mainly containing light hydrocarbon components such as propane, propylene, propyne, and other alkanes, alkenes, and alkynes with more than 3

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This example is the recovery of C from oilfield associated gas 3 + Hydrocarbon gas 6-tower pressure swing adsorption method, the tail gas flow rate is about 2000-10000Nm3 / h, the mixed gas pressure is about 0.50-0.70Mpa, and the composition of the gas to be treated is shown in Table 1.

[0044] components

C 1 +C 2

C 3 +

h 2 , N 2 , CO 2 Wait

∑

v％

85.00～90.00

9.50～14.50

～0.50

100.0

[0045] The adsorption system in this embodiment is composed of 6 adsorption towers, 2 vacuum pumps, and corresponding program-controlled valves and pipelines. The number of adsorption towers in the adsorption state at the same time is 2, and each adsorption tower is filled with Alumina, activated carbon and silica gel adsorbent with a volume ratio of 1:2:7. In order to ensure a high C 3+ Hydrocarbon recovery and product gas C 3 + For the high concentration of hydrocarbons, two pressure equalization steps ca...

Embodiment 2

[0051] This example is to recover C from the mixed gas 3 + Hydrocarbon gas 4-tower pressure swing adsorption method, the tail gas flow rate is about 800-2000Nm3 / h, the mixed gas pressure is about 0.25-0.50Mpa, and the composition of the gas to be treated is shown in Table 2.

[0052] components

C 1 +C 2

C 3 +

h 2 , N 2 , CO 2 Wait

∑

V％

70.00～78.00

12.00～20.00

～10.00

100.0

[0053] The adsorption system in this example is composed of 4 adsorption towers, 1 vacuum pump, and corresponding program-controlled valves and pipelines. The number of adsorption towers in the adsorption state at the same time is 1, and each adsorption tower is filled with a volume ratio of 1: 6:3 alumina, activated carbon and silica gel adsorbent. In order to ensure a high C 3 + Hydrocarbon recovery and product gas C 3 + For the high concentration of hydrocarbons, one pressure equalization drop and reverse discharge st...

Embodiment 3

[0059] This embodiment reclaims C from oilfield associated gas 3 + For hydrocarbon gas 8-tower pressure swing adsorption method, the tail gas flow rate is about 10000-20000Nm3 / h, the mixed gas pressure is about 0.90-1.10Mpa, and the composition of the gas to be treated is shown in Table 3.

[0060] components

C 1 +C 2

C 3 +

h 2 , N 2 , CO 2 Wait

∑

v％

65.00～73.00

2.00～10.00

～25.00

100.0

[0061] The adsorption system in this embodiment is composed of 8 adsorption towers, 3 vacuum pumps, and corresponding program-controlled valves and pipelines. The number of adsorption towers in the adsorption state at the same time is 3, and each adsorption tower is filled with a volume ratio of 1 : 5:4 alumina, activated carbon, silica gel adsorbent. In order to ensure a high C 3 + Hydrocarbon recovery and product gas C 3 + For the high concentration of hydrocarbons, 3 times of pressure equalization and re...

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PUM

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Abstract

The invention discloses a transforming adsorbing method to separate and recycle C3+ hydrocarbon from composite gas, which is characterized by the following: the composite gas is filled in the adsorbing tower with adsorbant, which is separated through transforming adsorbing course; the adsorbing tower possesses alumina, activated charcoal and silica gel with middle and micro-hole structure and specific area at 300-1500m2/g, whose bulk rate is 5-50% alumina, 5-90% activated charcoal, 0-90% silica gel; the content of activated charcoal is more than alumina, which can separate and recycle C3+ hydrocarbon through extracting step.

Description

technical field [0001] What the present invention relates to is a kind of pressure swing adsorption separation method, specifically a kind of from containing C 3 + Separation and recovery of hydrocarbon components in the mixed gas C 3 + Hydrocarbon components, namely propane, propylene, propyne and other alkanes, olefins, alkynes and other light hydrocarbon components with more than 3 C atoms, the pressure swing adsorption method is especially suitable for producing from oilfield associated gas, coal bed methane and natural gas cracking. C 2 + C separated and recovered from mixed gases such as hydrocarbon gas and natural gas 3 + Hydrocarbon mixed gas, and other C 3 + Separation and recovery of hydrocarbons from industrial waste gas 3 + Hydrocarbon composition. Background technique [0002] Contains C 3 and C 3 C above 3 + There are many mixed gases with hydrocarbon components, such as oilfield associated gas, coal bed methane, natural gas cracking to produce C...

Claims

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Application Information

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IPC IPC(8): C07C7/12C07C9/08C07C11/06C07C11/22
Inventor 魏玺群唐莉
Owner 四川开元科技有限责任公司
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