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Cleaning agent for sewage collection pipeline of high-sulfur gas field and use method of cleaning agen

A technology for sewage collection and cleaning agent, applied in the field of cleaning, can solve problems such as unpleasant odor, low-lying pipelines, damaged seals, etc., and achieves a wide range of pH adjustment, solves fouling blockage, and has a fast effect.

Inactive Publication Date: 2019-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (3) A small amount of cuttings and corrosion products exist
[0006] (4) Most of the fouling in the sewage collection pipeline exists in the low-lying and easy-to-water sections of the pipeline
[0007] (5) The fouling part is uneven, the lower half of the sewage collection pipeline has more deposits, and the upper half has almost no fouling
[0014] 1. Physical pig cleaning is only suitable for soft scale or hard scale with small thickness, and cannot be applied to the dense and thick scale in the sewage collection pipeline of high-sulfur gas fields
[0015] 2. Although pickling has a fast reaction speed and good cleaning effect, it will react with sulfide in the fouling in the sewage collection pipeline of high-sulfur gas fields to produce hydrogen sulfide, which is not suitable for on-site working conditions
[0016] 3. Use a sulfur-dissolving agent for cleaning, limited by the single effect of the sulfur-dissolving agent, which can only act on elemental sulfur, and cannot effectively clean the sulfur-containing scale in the sewage collection pipeline of high-sulfur gas fields
[0019] The above-mentioned prior art has the following problems: the main components of existing sulfur-dissolving agents or similar sulfur-dissolving agents are water-soluble organic amines or mercaptans and thioethers, which have an unpleasant odor and strong toxicity. Moreover, it is highly volatile, and it is easy to cause harm to the environment and the body of operators during the construction process and subsequent residual liquid treatment process. Some of them are already prohibited from use.
The volatilized gas phase of these substances is flammable and explosive, which will bring serious safety hazards to construction and residual liquid treatment.
In addition, these substances have a strong swelling effect on equipment seals, especially rubber seals, causing seal damage

Method used

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  • Cleaning agent for sewage collection pipeline of high-sulfur gas field and use method of cleaning agen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This embodiment is the most basic implementation.

[0058] A cleaning agent for a sewage collection pipeline of a high-sulfur gas field, comprising the following raw materials in parts by weight:

[0059] Chelating agent 100kg;

[0060] Anionic surfactant 100kg;

[0061] Sodium hydroxide 100kg;

[0062] Sodium phosphate 50kg;

[0063] Ethylene glycol 200kg;

[0064] Accelerator 200kg;

[0065] The remainder is water.

Embodiment 2

[0067] This embodiment is a preferred implementation.

[0068] A cleaning agent for a sewage collection pipeline of a high-sulfur gas field, comprising the following raw materials in parts by weight:

[0069] Chelating agent 50kg;

[0070] Anionic surfactant 100kg;

[0071] Sodium hydroxide 100kg;

[0072] Sodium phosphate 50kg;

[0073] Ethylene glycol 150kg;

[0074] Accelerator 150kg;

[0075] The remainder is water.

Embodiment 3

[0077] This embodiment is yet another preferred implementation manner.

[0078] A cleaning agent for a sewage collection pipeline of a high-sulfur gas field, comprising the following raw materials in parts by weight:

[0079] 10 parts of chelating agent;

[0080] 10 parts of anionic surfactant;

[0081] 20 parts of sodium hydroxide;

[0082] Sodium phosphate 10 parts;

[0083] 15 parts of ethylene glycol;

[0084] Accelerator 15 parts;

[0085] The remainder is water.

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Abstract

The invention discloses a cleaning agent for a sewage collection pipeline of a high-sulfur gas field and a use method of the cleaning agent, and provides a cleaning agent suitable for fouling in a sewage collection pipeline of a high-sulfur gas field. The cleaning agent includes a chelating agent, an anionic surfactant, sodium hydroxide, sodium phosphate, ethylene glycol and an accelerator. The cleaning agent is an alkaline cleaning agent, and the pH value can be controlled in a range of 10 to 14, and the cleaning agent can efficiently dissolve fouling in the sewage collection pipeline of thehigh-sulfur gas field at a lower use temperature.

Description

technical field [0001] The invention relates to the technical field of cleaning, in particular to a cleaning agent for a sewage collection pipeline of a high-sulfur gas field and a method for using the same. Background technique [0002] The production and operation of high-sulfur gas fields will produce a large amount of sewage, which is collected through various separators in the gas gathering station, and finally transported by the sewage collection pipeline to the supporting sewage treatment station for treatment. After a long period of continuous operation, a large amount of sulfur-containing scale will be deposited in the sewage collection pipeline. These scales have complex components and have the following characteristics: [0003] (1) The scale is tight and thick, with strong adhesion, and can firmly adhere to the inner wall of the sewage collection pipeline. [0004] (2) The content of sulfide is high, mainly including elemental sulfur and organic sulfide, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D1/28C11D3/20C11D3/04C11D3/06C11D3/60B08B3/08
CPCB08B3/08C11D1/28C11D3/00C11D3/04C11D3/044C11D3/06C11D3/2044C11D3/2086
Inventor 李华昌陈曦孙天礼庄园朱自强杨明军骆仕洪李霄易枫唐均蓝辉梁中红叶青松朱国曾力郭威何欢袁淋龚小平
Owner CHINA PETROLEUM & CHEM CORP
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