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Preparation method of long-acting inner wall cleaning agent for crude oil storage tank

A crude oil storage tank and cleaning agent technology, applied in the preparation of detergent mixture compositions, detergent compositions, detergent compounding agents, etc., can solve the problems of high work intensity, poor cleaning effect, complicated methods, etc. Long-lasting anti-rust effect

Inactive Publication Date: 2016-08-03
宋介珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method for cleaning the storage tank has the problems of complicated method, high work intensity and poor cleaning effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method for a long-acting inner wall cleaning agent for crude oil storage tanks, comprising the steps of:

[0022] In the first step, by weight, 30 parts of 50wt% sulfuric acid solution, 3 parts of polyethylene oxide-polypropylene oxide block copolymer, 2 parts of hexamethamine, 1 part of o-xylenethiourea, molybdenum 0.3 parts of sodium phosphate, 0.1 part of triisopropanolamine, 2 parts of isobornyl methacrylate, 1 part of benzoic acid, and 3 parts of olive oil polyethylene glycol ester were heated to 50°C and mixed uniformly to obtain the first mixture;

[0023] Step 2: Add 1 part of corrosion inhibitor cinnamaldehyde and 1 part of thickener xanthan gum to the first mixture, heat to 60°C and mix evenly to obtain the second mixture;

[0024] Step 3: In the second mixture, add 4 parts of anionic surface-active sodium dodecylbenzenesulfonate and 3 parts of paraffin wax emulsion, heat and mix under high-speed dispersion conditions of 1500 rpm to obtain a clea...

Embodiment 2

[0026] A preparation method for a long-acting inner wall cleaning agent for crude oil storage tanks, comprising the steps of:

[0027] In the first step, by weight, 50 parts of 60wt% sulfuric acid solution, 6 parts of polyethylene oxide-polypropylene oxide block copolymer, 3 parts of urotropine, 2 parts of o-xylenethiourea, molybdenum 0.5 parts of sodium phosphate, 0.3 parts of triisopropanolamine, 3 parts of isobornyl methacrylate, 5 parts of benzoic acid, and 5 parts of olive oil polyethylene glycol ester were heated to 70°C and mixed uniformly to obtain the first mixture;

[0028] Step 2: Add 5 parts of corrosion inhibitor cinnamaldehyde and 5 parts of thickener xanthan gum to the first mixture, heat to 75°C and mix evenly to obtain the second mixture;

[0029] Step 3: In the second mixture, add 8 parts of anionic surface-active sodium dodecylbenzenesulfonate and 5 parts of paraffin wax emulsion, heat and mix under high-speed dispersion conditions of 2000 rpm to obtain a cl...

Embodiment 3

[0031] A preparation method for a long-acting inner wall cleaning agent for crude oil storage tanks, comprising the steps of:

[0032] In the first step, by weight, 40 parts of 55wt% sulfuric acid solution, 5 parts of polyethylene oxide-polypropylene oxide block copolymer, 2 parts of urotropine, 1 part of o-xylenethiourea, molybdenum 0.4 parts of sodium phosphate, 0.2 parts of triisopropanolamine, 3 parts of isobornyl methacrylate, 3 parts of benzoic acid, and 4 parts of olive oil polyethylene glycol ester were heated to 60°C and mixed uniformly to obtain the first mixture;

[0033] Step 2: Add 3 parts of corrosion inhibitor cinnamaldehyde and 3 parts of thickener xanthan gum to the first mixture, heat to 70°C and mix evenly to obtain the second mixture;

[0034] Step 3: Add 5 parts of anionic surface-active sodium dodecylbenzene sulfonate and 4 parts of paraffin wax emulsion to the second mixture, heat and mix under high-speed dispersion conditions of 1600 rpm to obtain a cle...

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PUM

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Abstract

The invention relates to a preparation method of a long-acting inner wall cleaning agent for a crude oil storage tank, and belongs to the technical field of chemical engineering cleaning agents. The method comprises the steps that a sulfuric acid solution, a polyethylene oxide-polypropylene oxide segmented copolymer, urotropine, o-xylene thiourea, sodium molybdate, triisopropanolamine, isobornyl methacrylate, benzoic acid and olive oil macrogol ester are heated and then mixed to be uniform, and a first mixture is obtained; a corrosion inhibitor and a thickening agent are added in the first mixture, heated and mixed to be uniform, and a second mixture is obtained; an anion surface active agent and paraffin emulsion are added into the second mixture, heated and then mixed under the high-speed dispersion condition, and a cleaning agent is obtained. According to the cleaning agent, the problem that iron sulfide surface depositions and corrosion are generated by a sulfur compound in the crude oil storage tank can be solved, and the cleaning agent has the effect of resisting rust in a long-acting mode.

Description

technical field [0001] The invention relates to a preparation method of a long-acting inner wall cleaning agent for crude oil storage tanks, belonging to the technical field of chemical cleaning agents. Background technique [0002] According to the national oil tank repair regulations, the storage tank overhaul interval is 5 to 7 years, and it must be cleaned before repairing or changing the oil type. Before the mid-1990s, the cleaning of oil tanks was done manually, which not only wasted a lot of energy, but was also unsafe and caused environmental pollution. After our research, the current national crude oil storage tank storage capacity (strategic and commercial) is more than 100 million tons. According to the industry standard 5-year cleaning cycle, there will be 20 million tons per year (average 50,000 tons / seat, there will be 400) The above crude oil storage tanks need to be cleaned. Due to the utilization of sulfur-containing crude oil, sulfur corrosion and its a...

Claims

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Application Information

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IPC IPC(8): C11D1/22C11D3/60C11D3/04C11D3/37C11D3/28C11D3/34C11D3/30C11D3/20C11D3/18C11D3/22C23G1/08C23G1/06
CPCC11D1/22C11D3/042C11D3/046C11D3/18C11D3/2072C11D3/2079C11D3/2093C11D3/222C11D3/28C11D3/30C11D3/349C11D3/3707C23G1/06C23G1/061C23G1/088C11D2111/16C11D2111/14
Inventor 宋介珍
Owner 宋介珍
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