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A kind of industrial fermentation tank stainless steel heat exchange coil cleaning agent and preparation method thereof

A cleaning agent and fermenter technology are applied in the field of stainless steel heat exchange coil cleaning agent for industrial fermenters and the field of preparation thereof, which can solve the problems of fouling off, high cleaning cost, complicated supporting devices, etc. Improve the anti-corrosion ability and avoid the effect of secondary deposition

Inactive Publication Date: 2016-03-09
江苏省轻工业科学研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that a high-pressure power source is required, and the cleaning effect of the elbow is not good.
[0006] 2. Ultrasonic cleaning technology: The ultrasonic generator converts the super-audio frequency electric energy into the mechanical vibration of the same frequency and transmits it to the cleaning agent. The ultrasonic wave generates tiny bubbles to form a cavitation effect, which continuously acts on the surface of the object to make the dirt fall off. The cleaning effect is better, but The cost of cleaning is higher
The cleaning effect of this technology is good, but the supporting devices required are more complicated, and usually need to be equipped with PIG tracking and positioning, transmitting and receiving devices, and power source pressure monitoring devices; in addition, PIG cleaning technology is selective for pipes, and the pipe diameter should be greater than 50mm The cut-off valve on the pipeline should be a ball valve or a flat gate valve
It is not difficult to see that this method has high cleaning costs and high requirements for operating technology, which is not conducive to large-scale promotion
[0008] 4. Acid cleaning technology: one or more of industrial hydrochloric acid, sulfuric acid and nitric acid is used as cleaning agent. The cleaning effect of strong acid cleaning agent is good, but the cleaning agent is highly acidic and highly corrosive to metal equipment. There are security risks
There are some practical applications in foreign countries, and the application effect of this technology is good, but in practical applications, the temperature and pH control requirements are relatively high (for example, the process conditions pH9. ~9.5, temperature 60~80℃), high cleaning cost, little domestic promotion
[0010] 6. Mechanical descaling method: use such as iron brazing and hammer to beat, the disadvantage is that it is labor-intensive and time-consuming, the cleaning effect is average, and improper operation will cause damage to the equipment
[0011] Of course, there are other cleaning technologies in use, but at present these cleaning technologies always have one or another deficiency, such as some need to be equipped with special equipment, provide high pressure, some will produce unpleasant sound waves, and some are harmful to the pipe fittings to be cleaned. The shape has requirements, some cleaning effects are average, etc., and so on.

Method used

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  • A kind of industrial fermentation tank stainless steel heat exchange coil cleaning agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] (1) Add 233.2kg of deionized water, 30kg of citric acid and 50kg of acetic acid into the reaction kettle, stir at a speed of 40rpm for 15min, and prepare the mixture a;

[0066] (2) Take 233.2kg of deionized water, dissolve 50kg of penetrant JFC-E, 40kg of coconut oleic acid diethanolamide, 20kg of sodium lauryl sulfate and 15kg of Pingpingjia O-10, and add the dissolved components into the mixture In liquid a, stir at a speed of 15 rpm for 40 minutes to prepare mixed liquid b;

[0067] (3) Add 2kg of 2-mercaptobenzothiazole, 1kg of thiourea and 0.3kg of sodium ethylenediaminetetramethylene phosphonate to the mixture b, and stir for 30min at a speed of 30rpm to prepare the mixture c ;

[0068] (4) Add 2kg of sodium fluoride to the mixed solution c, and stir at a speed of 40rpm for 10min to prepare the mixed solution d;

[0069] (5) Add 40kg of hydrofluoric acid and 50kg of hydrochloric acid to the mixed solution d, and stir at a speed of 30rpm for 10min to prepare the...

Embodiment 2

[0080] (1) Add 243.6kg of deionized water, 40kg of citric acid and 20kg of acetic acid into the reaction kettle, stir at a speed of 60rpm for 10min, and prepare the mixture a;

[0081] (2) Take 243.6kg of deionized water, dissolve 65kg of penetrant JFC-E, 20kg of coconut oleic acid diethanolamide, 10kg of sodium lauryl sulfate and 30kg of Pingpingjia O-10, and add the dissolved components to mix In liquid a, stir at a speed of 20 rpm for 30 minutes to prepare mixed liquid b;

[0082] (3) Add 1 kg of 2-mercaptobenzothiazole, 2 kg of thiourea and 0.3 kg of sodium ethylenediamine tetramethylene phosphonate to the mixed liquid b, and stir at a speed of 40 rpm for 20 minutes to prepare the mixed liquid c;

[0083] (4) Add 1 kg of sodium fluoride to the mixed solution c, and stir for 5 minutes at a speed of 50 rpm to prepare the mixed solution d;

[0084] (5) Add 50 kg of hydrofluoric acid and 30 kg of hydrochloric acid to the mixed liquid d, and stir at a speed of 50 rpm for 5 min...

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Abstract

The invention discloses a detergent for a stainless steel heat exchange coil pipe of an industrial fermentation tank and a preparation method thereof, and belongs to the technical field of chemical contaminant release. The detergent consists of citric acid, acetic acid, a penetrating agent JFC-E, coconut oil diethanoamine condensate, sodium laurylsulfate, peregal O-10, 2-thiol benzothiazole, thiourea, quadrol tetramethylene sodium ibandronate, sodium fluoride, hydrofluoric acid, hydrochloric acid and deionized water. All the components are mixed and uniformly stirred to obtain a product. The detergent is green, environment-friendly, good in contaminant release effect, strong in detergency, convenient to use and high in biodegradation rate; in addition, the detergent has extremely low corrosion rate to equipment.

Description

technical field [0001] The invention relates to the technical field of chemical descaling, in particular to a cleaning agent suitable for stainless steel heat exchange coils of industrial fermentation tanks and a preparation method thereof. Background technique [0002] Gelatinization, saccharification and other processes in industrial fermentation require heat exchange such as heating or heat preservation. Stainless steel heat exchange coil is a commonly used heat exchange equipment. When the coil performs heat exchange, the heat exchange medium industrial water is used in closed circuit circulation. During the heat exchange operation, there is no contact with raw materials and products, and no pollution to the fermentation material. It has the advantages of quickness and simplicity, and is widely used in the fermentation industry. [0003] When the coil is used for heat exchange, the industrial water used as the heat exchange medium is recycled in a closed circuit. As the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/06C23G1/08
Inventor 郑超
Owner 江苏省轻工业科学研究设计院有限公司