Preparation process of high-corrosion-inhibition cleaning agent used for motor vehicle water circulation system

Abstract

The invention discloses a preparation process of a high-corrosion-inhibition cleaning agent used for a motor vehicle water circulation system. Gelatin is dissolved in redistilled water, a ferrous chloride solution and a hydrogen peroxide solution are added, stirring is carried out, a sodium hydroxide solution is added dropwise, and reacting is carried out for several hours in a boiling water bathto obtain nano-scale magnetic gelatin particles; cellulase is added, oscillating is carried out for several hours at the room temperature, the redistilled water is used for washing till no enzyme protein is washed out, so that the magnetic immobilized cellulase is obtained; then a certain amount of plant straw is taken and is subjected to crushing, then the quantitative water and magnetic immobilized cellulase are added, standing is carried out for several hours after stirring, and pressure filtration is carried out to remove residues to obtain a straw extracting solution; and the straw extracting solution, an organic cosolvent, a surfactant and a defoaming agent are added into a reaction kettle to be stirred and mixed to obtain the cleaning agent. According to the process, a crop straw extract is used as a main raw material, so that the source is rich, the process operation is simple, and the cost is low; and one-time and quick clearing under the conditions of multiple types of material and multiple types of dirt can be achieved, and the environment is not polluted.

Description

technical field [0001] The invention relates to the technical field of preparation of cleaning agents, in particular to a preparation process of a cleaning agent for a highly corrosion-inhibiting motor vehicle water circulation system. Background technique [0002] Motor vehicles use water circulation to cool the engine during operation, but due to the accumulation of scale on the heat transfer surface, the heat exchange efficiency is affected, causing the water tank to boil and affecting the normal operation of the motor vehicle. The current processing method is mainly manual mechanical dredging. The disadvantages of this processing method are: (1) the water tank must be removed for processing; (2) there is wear and tear on the equipment; (3) only the water tank can be processed but the entire water circulation system It cannot be fully treated, even if the water tank can not completely dredge every part; (4) the treatment cost is high. [0003] The use of chemical methods...

AI Technical Summary

Problems solved by technology

[0002] Motor vehicles use water circulation to cool the engine during operation, but due to the accumulation of scale on the heat transfer surface, the heat exchange efficiency is affected, causing the water tank to boil and affecting the normal operation of the motor vehicle

The current processing method is mainly manual mechanical dredging. The disadvantages of this processing method are: (1) the water tank must be removed for processing; (2) there is wear and tear on the equipment; (3) only the water tank can be processed but the entire water circulation system It cannot be fully treated, even if the water tank cannot completely dredge every part; (4) The treatment cost is high

There are also a small amount of reports about the research work in this aspect at home, as: although the descaling agent prepared by raw materials such as expensive ethylenediaminetetraacetic acid, sodium tripolyphosphate, hydrolyzed maleic anhydride has certain descaling effect in CN1144780A, But consumption is bigger and has obvious corrosion to aluminum material; The descaling agent disclosed by CN1235126A comprises dissolving agent and scavenger two parts, and the former is main raw material with hydrochloric acid, and the latter is main raw material with sodium carbonate, and this scheme is only for Single carbonate scale can be cleared, not suitable for complex scale, but it has obvious corrosion on various metals, especially for solder and aluminum, it has no corrosion inhibition effect at all

[0004] There is no public report on foreign research on related aspects. A 540-type solution of an American product that is listed in my country, although it is not very corrosive to various metals, has poor descaling function and is expensive.

There is no report on this aspect of using crop straw extract as the main raw material

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