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A process for treating petroleum associated gas

A technology of oil associated gas and treatment process, which is applied in the petroleum industry, gas fuel, fuel, etc. It can solve the problems of high gas permeation rate, unfavorable oil associated gas treatment process simplification, unsuitable associated gas, etc., and achieve high gas flux , Simplified drying steps, fast dehydration effect

Active Publication Date: 2020-06-30
杭州勃扬能源设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Molecular sieve dehydration is the most commonly used at present, but after dehydration with molecular sieve, it needs to add dust removal process, so it is not conducive to the simplification of oil-associated gas treatment process, and the common membrane for filtering water molecules is not suitable for a large amount of organic vapor and liquid oil. associated gas, so the drying membrane used in the oil associated gas treatment process should be a filter membrane that is completely suitable for the associated gas environment. The filter membrane needs to be dehydrated quickly, without causing dust pollution, and has a high gas permeability.

Method used

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  • A process for treating petroleum associated gas

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Effect test

Embodiment 1

[0030] Embodiment 1: the preparation one of composite film:

[0031] The preparation steps of the present embodiment are as follows:

[0032] Bottom membrane preparation: stainless steel fiber and glass fiber are mixed and woven into a mesh bottom membrane;

[0033] Film compact: mix 50g of alumina, 25g of γ-Al 2 o 31. After mixing 50g of silicon dioxide with 250ml of 45wt% ethanol solution, the mixture was dispersed by 30kHz ultrasonic treatment for 0.5h at room temperature. After mixing the mixture with 100ml of acetone, it was placed in a ball mill with a rotating speed of 200rpm for 25h. The medium is alumina balls. After ball milling, the mixture is taken out and dried at 90°C to form a mixed powder. The mixed powder is pre-sintered in vacuum at 1500°C and 10MPa for 2 hours and then taken out to obtain a composite powder. Mix 40g of the composite powder with 20g of silicon Gel, 5g of sodium bicarbonate powder, and 15g of polyimide powder are prepared by stirring with a...

Embodiment 2

[0035] Embodiment 2: the preparation two of composite film:

[0036] The preparation steps of this embodiment are as follows:

[0037] Bottom membrane preparation: stainless steel fiber and glass fiber are mixed and woven into a mesh bottom membrane;

[0038] Film compact: mix 50g of alumina, 25g of γ-Al 2 o 3 1. After mixing 50g of silicon dioxide with 250ml of 50wt% ethanol solution, use 30kHz ultrasonic treatment to disperse for 0.5h at room temperature to obtain the mixture. After mixing the mixture with 100ml of acetone, place it in a ball mill with a rotation speed of 250rpm for 23h. The medium is alumina balls. After ball milling, the mixture is taken out and dried at 95°C to form a mixed powder. The mixed powder is pre-sintered in vacuum at 1600°C and 9MPa for 2 hours and then taken out to obtain a composite powder. Mix 40g of the composite powder with 32g of silicon Gel, 20g of sodium bicarbonate powder, and 60g of polyimide powder were prepared by stirring with an...

Embodiment 3

[0040] Embodiment 3: the preparation three of composite film:

[0041] The preparation steps of this embodiment are as follows:

[0042] Bottom membrane preparation: stainless steel fiber and glass fiber are mixed and woven into a mesh bottom membrane;

[0043] Film compact: 80g of alumina, 40g of γ-Al 2 o 3 1. After mixing 80g of silicon dioxide with 400ml of 65wt% ethanol solution, 30kHz ultrasonic treatment was used at room temperature to disperse for 0.5h to obtain the mixture. After the mixture was mixed with 100ml of acetone, it was placed in a ball mill with a rotating speed of 200rpm for 25h. The medium is alumina balls. After ball milling, the mixture is taken out and dried at 100°C to form a mixed powder. The mixed powder is pre-sintered in vacuum at 1800°C and 8MPa for 1 hour and then taken out to obtain a composite powder. Mix 60g of the composite powder with 30g of silicon Gel, 7.5g sodium bicarbonate powder, and 22.5g polyimide powder were prepared by stirring...

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Abstract

The invention discloses a treatment technology for petroleum associated gas, and belongs to the technical field of treatment of petroleum associated gas. The treatment technology comprises the following steps of compression of the associated gas, drying, pre-cooling by ammonia, refrigerating by an expansion machine, distillation of product, and dry gas power generation; in the drying process, a composite film is used for drying and dewatering; the composite film is a double-layer composite film which is prepared by mixing and weaving stainless steel fibers and glass fibers into a net-shaped bottom film, pressing a thin film into a blank, firing and forming. The treatment technology for the petroleum associated gas has the advantages that the petroleum associated gas is treated and is usedfor dry gas power generation; the operation is simple, and the treatment steps are concise; a film drying technique is used for dewatering, the dewatering speed is high, the permeation amount of gas is high, and the secondary pollution due to production of dust is avoided.

Description

technical field [0001] The invention relates to the technical field of petroleum-associated gas treatment, in particular to a petroleum-associated gas treatment process. Background technique [0002] Petroleum-associated gas, also known as petroleum-dissolved gas, occurs in the pores of high-pressure rock formations under geological conditions, coexists and dissolves with crude oil, and mixes with each other. After the crude oil is mined, due to changes in temperature and pressure, the associated gas is separated from the crude oil in the form of gas and separated into a gas stream. Under normal conditions, the main body of petroleum-associated gas is C 1 -C 5 Many components of N 2 、H 2 、H 2 S and CO 2 Wait. It is valued because of its extremely important energy value and petrochemical raw material value. Around the world there are approximately 137×10 12 About 70% of the proven reserves of natural gas in cubic meters are oil-associated gas. Therefore, the utilizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L3/10
CPCC10L3/106
Inventor 李可心卢嘉威李士华
Owner 杭州勃扬能源设备有限公司
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