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Cleaning formulation for convection zone furnace tube of cracking furnace

A technology of convection section and cracking furnace, applied in the direction of detergent compounding agent, detergent composition, organic detergent composition, etc., which can solve the problems of high cost of dry ice cleaning, difficult construction, and many cleaning dead ends, etc., and achieves low price, Effect of reduced fuel consumption and simple components

Inactive Publication Date: 2017-02-22
YUEYANG YUXIANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, dry ice cleaning was generally used, but the cost of dry ice cleaning is high, the construction is difficult, and there are many cleaning dead ends

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0080] A kind of preparation method of the cleaning prescription of above-mentioned pyrolysis furnace convection section furnace tube, comprises the following steps:

[0081] Prepare pre-cleaning agent;

[0082] preparation of cleaning agents;

[0083] Prepare rinse.

[0084] Wherein, the preparation method of pre-cleaning agent comprises the following steps:

[0085] Prepare penetrating agent, wetting agent, corrosion inhibitor and water according to mass percentage;

[0086] Add water to the stirring tank and turn on the stirring blade;

[0087] Add penetrating agent, wetting agent and corrosion inhibitor in sequence in water;

[0088] Mix and stir for 0.5~1 hour, then let stand for 5~10 minutes to get the finished product.

[0089] The preparation method of cleaning agent comprises the following steps:

[0090] Prepare cleaning agent, oil dispersant, first auxiliary agent, second auxiliary agent, surfactant, defoamer, chelating agent, corrosion inhibitor and water acc...

Embodiment 1

[0102] (1) Preparation of pre-cleaning agent: Prepare 2-octyl polyoxyethylene ether, acrylic acid-hydroxypropyl acrylate copolymer, Lan-826 corrosion inhibitor and water according to the mass percentage, add 1000 kg of water to the stirring tank, and start stirring Add 8kg of 2-octyl polyoxyethylene ether, 7kg of acrylic acid-hydroxypropyl acrylate copolymer, and 3kg of Lan-826 corrosion inhibitor in sequence, mix and stir for 0.5 hours, and let stand for 5 minutes to obtain the pre-cleaning agent. , the pre-cleaning agent is a colorless turbid liquid.

[0103] (2) Preparation of cleaning agent: Prepare methoxypolyethylene glycol, polypropylene glycol, soda ash, baking soda, polyoxyethylene sorbitan fatty acid ester, polyether, disodium edetate, Lan -826 Corrosion inhibitor and water, add 1000kg of water to the stirring tank, turn on the stirring blade, add 3kg of methoxypolyethylene glycol, 2kg of polypropylene glycol, 0.8kg of soda ash, 0.8kg of baking soda, 2kg in sequence ...

Embodiment 2

[0117] (1) Preparation of pre-cleaning agent: Prepare 2-octyl polyoxyethylene ether, acrylic acid-hydroxypropyl acrylate copolymer, Lan-826 corrosion inhibitor and water according to the mass percentage, add 1000 kg of water to the stirring tank, and start stirring Add 8kg of 2-octyl polyoxyethylene ether, 7kg of acrylic acid-hydroxypropyl acrylate copolymer, and 3kg of Lan-826 corrosion inhibitor in sequence, mix and stir for 0.5 hours, and let stand for 5 minutes to obtain the pre-cleaning agent. , the pre-cleaning agent is a colorless turbid liquid.

[0118] (2) Preparation of cleaning agent: Prepare methoxypolyethylene glycol, polypropylene glycol, soda ash, baking soda, polyoxyethylene sorbitan fatty acid ester, polyether, disodium edetate, Lan -826 Corrosion inhibitor and water, add 1000kg of water to the stirring tank, turn on the stirring blade, add 3kg of methoxypolyethylene glycol, 2kg of polypropylene glycol, 0.8kg of soda ash, 0.8kg of baking soda, 2kg in sequence ...

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Abstract

The invention provides a cleaning formulation for the convection zone furnace tube of a cracking furnace. The cleaning formulation comprises a pre-cleaning agent, a cleaning agent and a rinsing agent. The pre-cleaning agent consists of a penetrating agent, a wetting agent, a corrosion inhibitor and water as the balance thereof. The cleaning agent consists of a detergent, an oil dispersing agent, a first additive, a second additive, a surfactant, a defoaming agent, a chelating agent, a corrosion inhibitor and water as the balance thereof. The rinsing agent consists of a release agent, a corrosion inhibitor and water as the balance thereof. The present invention also provides a preparation method for preparing the pre-cleaning agent, the cleaning agent and the rinsing agent in the cleaning formulation for the convection zone furnace tube of the cracking furnace. The above cleaning formulation for the convection zone furnace tube of the cracking furnace is efficient, safe, simple in component, convenient in preparation, low in cost, and free of environmental pollution. The exhaust gas temperature of the cracking furnace is reduced. Meanwhile, the thermal efficiency of the cracking furnace is improved.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a cleaning formula for a furnace tube in a convection section of a cracking furnace. Background technique [0002] The cracking furnace is one of the main energy-consuming equipment of the ethylene plant. After long-term operation, a large amount of dirt has accumulated on the surface of the furnace tube in the convection section, which leads to an increase in the temperature of the flue gas outlet and reduces the thermal efficiency of the cracking furnace. Removing the dirt on the surface of the furnace tube is an effective way to improve the thermal efficiency of the cracking furnace. In the past, dry ice cleaning was generally used, but the cost of dry ice cleaning is high, the construction is difficult, and there are many dead spots for cleaning. Contents of the invention [0003] Based on this, it is necessary to address the problems in the background techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D1/72C11D1/825C11D3/00C11D3/10C11D3/33C11D3/37C11D9/02
CPCC11D1/721C11D1/66C11D1/74C11D1/825C11D3/0073C11D3/10C11D3/33C11D3/3765C11D9/02
Inventor 曾蔚然罗浩杨次雄李珏罗新汨吴湘丽
Owner YUEYANG YUXIANG TECH
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