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Internal circulation microelectrolysis based method for treating hydrogen sulfide in natural gas

A treatment method and internal circulation technology, which is applied in the direction of gas fuel, petroleum industry, fuel, etc., can solve the problems of high treatment cost, complicated process, high investment cost, etc., and achieve the effect of solving packing compaction, high treatment efficiency and low cost

Inactive Publication Date: 2019-08-02
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Wet desulfurization technologies mainly include ethanolamine (MEA) method, low-temperature methanol method, DDS desulfurization technology and LO-CAT sulfur recovery technology, but wet desulfurization technology has disadvantages such as complicated process, high investment cost, large energy consumption, and large amount of desulfurization wastewater. ; Dry desulfurization technology mainly includes activated carbon method, molecular sieve method and iron oxide method, but dry desulfurization technology has strict desulfurization conditions and is not suitable for high content H 2 Disadvantages such as S removal and regeneration difficulties; membrane desulfurization technology mainly includes membrane-based absorption method and membrane distillation method, but membrane desulfurization technology has disadvantages such as complicated membrane production process, short service life of membrane and difficult disposal of concentrated liquid after treatment.
[0005] To sum up, there is a relatively high content of H in natural gas 2 S, these H 2 S will directly or indirectly have a significant impact on storage and transportation equipment, the environment, and human health, while natural gas commonly used in industry to remove H 2 The S process generally has the disadvantages of high processing cost and complicated process, so there is an urgent need to develop a simple, low-cost, safe and efficient H process. 2 S removal technology

Method used

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  • Internal circulation microelectrolysis based method for treating hydrogen sulfide in natural gas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, a H in natural gas based on internal circulation micro-electrolysis 2 S processing method for H 2 S content is 800mg / m 3 The natural gas is processed, which can specifically include: using a drying device to treat the natural gas containing H 2 The natural gas of S is dried, and the gas flow is controlled by a gas flow meter, and then the dried gas is passed into the internal circulation reactor from the bottom of the internal circulation reactor for reaction. In the internal circulation reactor, the mass ratio of iron to activated carbon is 1:1, the ventilation rate is 0.4m 3 / h, the initial pH value of the solution is 7, the reaction temperature is room temperature, and the reaction time is 90min, thereby realizing the removal of H from natural gas 2 S; removal of H 2 The natural gas after S is passed into NaOH solution to absorb the residual H in the gas 2 S, measure the S in the NaOH solution 2- content.

[0041] Specifically, usin...

Embodiment 2

[0043] Such as figure 1 As shown, a H in natural gas based on internal circulation micro-electrolysis 2 S processing method for H 2 S content is 800mg / m 3 The natural gas is processed, which can specifically include: using a drying device to treat the natural gas containing H 2 The natural gas of S is dried, and the gas flow is controlled by a gas flow meter, and then the dried gas is passed into the internal circulation reactor from the bottom of the internal circulation reactor for reaction. In the internal circulation reactor, the mass ratio of iron to activated carbon is 1:1, the ventilation rate is 0.4m 3 / h, the initial pH value of the solution is 7, the reaction temperature is room temperature, and the reaction time is 120min, thereby realizing the removal of H from natural gas 2 S; removal of H 2 The natural gas after S is passed into NaOH solution to absorb the residual H in the gas 2 S, measure the S in the NaOH solution 2- content.

[0044] Specifically, usi...

Embodiment 3

[0046] Such as figure 1 As shown, a H in natural gas based on internal circulation micro-electrolysis 2 S processing method for H 2 S content is 800mg / m 3 The natural gas is processed, which can specifically include: using a drying device to treat the natural gas containing H 2 The natural gas of S is dried, and the gas flow is controlled by a gas flow meter, and then the dried gas is passed into the internal circulation reactor from the bottom of the internal circulation reactor for reaction. In the internal circulation reactor, the mass ratio of iron to activated carbon is 3:2, the ventilation rate is 0.4m 3 / h, the initial pH value of the solution is 6, the reaction temperature is room temperature, and the reaction time is 120min, thereby realizing the removal of H from natural gas 2 S; removal of H 2 The natural gas after S is passed into NaOH solution to absorb the residual H in the gas 2 S, measure the S in the NaOH solution 2- content.

[0047] Specifically, usi...

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Abstract

The invention discloses an internal circulation microelectrolysis based method for treating hydrogen sulfide in a natural gas. The method comprises drying the H2S containing natural gas, then introducing the dried gas into an internal circulation reactor from the bottom part of an internal circulation reactor to react, and controlling the ferric-carbon micro-electrolysis in the internal circulation reactor, wherein the reaction time is 90-120 min, so that the H2S is removed from the natural gas. The treatment efficiency is high, the process is simple, the cost is low, and the method is environmentally friendly and safe.

Description

technical field [0001] The invention relates to hydrogen sulfide (H 2 S) processing technical field, especially relate to a kind of H in the natural gas based on internal cycle micro-electrolysis 2 S processing method. Background technique [0002] With the rapid development of modern industry, natural gas is widely used in industrial production and residential life. However, natural gas often contains a large amount of H 2 S, during the exploitation, processing, utilization and transportation of natural gas, due to H 2 Accidents of pipe cracking and leakage caused by S corrosion occur frequently, so the removal of H in natural gas 2 S has become the main problem in the process of natural gas exploitation, processing utilization and transportation. [0003] h 2 S is a flammable and highly toxic acid gas with unique physical and chemical properties. When natural gas contains a large amount of H 2 S, H 2 S will react with Fe and other substances in the storage and tra...

Claims

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Application Information

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IPC IPC(8): C10L3/10
CPCC10L3/103
Inventor 韩严和武传涛付晓璐符一鸣
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY