阅读说明：本技术 一种皂用低熔点蜡的生产方法 (Production method of low-melting-point wax for soap ) 是由 谭宁梅 陈端 李展宇 杨土清 韦兴赞 于 2019-12-02 设计创作，主要内容包括：一种皂用低熔点蜡的生产方法,其特征在于：包括以下步骤：加氢裂化尾油→糠醛精制→酮苯脱油脱蜡→选择脱油蜡→一次发汗→选择组分混合→二次发汗→调合→切割脱臭→白土精制→氨冷成型→产品。低熔点石蜡馏分进入精馏塔进行除臭处理,后经过白土精制改善其色度与安定性,再进行冷冻成型包装,具有无臭、色度适宜且成型度优秀等优点。(A method for producing low-melting-point wax for soap is characterized in that: the method comprises the following steps: hydrocracking tail oil → furfural refining → ketone-benzol deoiling and dewaxing → selective deoiling wax → primary sweating → selective component mixing → secondary sweating → blending → cutting deodorization → clay refining → ammonia cold forming → product. The low-melting-point paraffin fraction enters a rectifying tower for deodorization treatment, is improved in chromaticity and stability through clay refining, and is frozen, formed and packaged, so that the paraffin fraction has the advantages of no odor, proper chromaticity, excellent forming degree and the like.)

1. A method for producing low-melting-point wax for soap is characterized in that: the method comprises the following steps:

hydrocracking tail oil → furfural refining → ketone-benzol deoiling and dewaxing → selective deoiling wax → primary sweating → selective component mixing → secondary sweating → blending → cutting deodorization → clay refining → ammonia cold forming → product; selecting the deoiled wax, wherein the deoiled wax with the oil content of 2-3% is selected; the primary sweating process comprises the following steps: cutting wax according to the volume ratio of 18%, 12%, 10% and 30%, and selecting the required fraction wax to perform a secondary sweating process; the sweating process for the secondary sweating comprises the following steps: cutting wax according to 18%, 12%, 10% and 10%, selecting required wax fractions, and mixing; the target wax fraction obtained by the secondary sweating process enters a rectifying tower to be cut and deodorized, and then is subjected to clay refining and freezing forming to obtain a target product; in the process of selecting the required fraction wax for secondary sweating, the four-fraction or five-fraction wax can be selected to be cut; in the selective deoiling wax, deoiling cerate with the melting point of more than 48 ℃ and the oil content of less than 5 percent is selected as a raw material;

wherein the furfural refining conditions are that the solvent ratio is 0.5-3.0, the tower top temperatures of the degassing tower/the refining liquid recovery tower are 82/115/125 ℃, the tower bottom temperatures of the degassing tower/the refining liquid recovery tower are 82/115/125 ℃ and the outlet temperature of the heating furnace is 215 +/-5 ℃; the technological conditions of ketone-benzene deoiling are that the solvent composition mass ratio is 6: 4, the mass ratio of solvent dilution is 3.5, the cold spot temperature is 15 ℃, the dilution temperature is 10-15 ℃, the mass ratio of cold washing solvent is 0.1-0.5%, the temperature of cold washing solvent is minus 20/minus 10 ℃, the dewaxing filtration temperature is minus 20 ℃, and the addition amount of filter aid is 0.5%; the temperature rising rate of the primary sweating and the secondary sweating is 0.5-2 ℃/h; the mixing selection of the components is as follows: 40-55 ℃, oil content: not more than 15%; the cutting deodorization process conditions are as follows: 0.05-0.09MPa, tower top temperature: 90-130 ℃, bottom temperature: 160 ℃ and 200 ℃; the clay refining process conditions are as follows: 0.5-8%, refining temperature 90-130 ℃, refining time: 20-60 min; the technological conditions of ammonia cold forming are wax injection water temperature: 60-80 ℃ and the temperature of the cold room is 0-15 ℃.

Technical Field

The invention relates to a production method of wax, in particular to a production method of low-melting-point wax for soap.

Background

The existing production method of the low-melting-point wax comprises the following steps: 1) heating and melting 5-25 parts by weight of raw oil, adding 5-90 parts by weight of ester solvent and 0.1-2 parts by weight of crystallization modifier into the melted raw oil, and keeping the temperature at 45-65 ℃ to obtain a mixture; 2) Cooling and crystallizing the mixture obtained in the step 1) until the crystallization temperature is reduced to-15 to-20 ℃ to obtain a crystallization mixture; 3) filtering the crystallization mixture obtained in the step 2) to obtain a filter cake and filtrate, heating and distilling the filter cake, and removing the ester solvent.

The technical scheme has the following defects that: the color is poor and the molding is rough.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the low-melting-point wax with proper chromaticity and good forming degree.

The technical scheme of the invention is as follows:

a method for producing low-melting-point wax for soap is characterized in that: the method comprises the following steps:

hydrocracking tail oil → furfural refining → ketone-benzol deoiling and dewaxing → selective deoiling wax → primary sweating → selective component mixing → secondary sweating → blending → cutting deodorization → clay refining → ammonia cold forming → product.

And selecting the deoiled wax, wherein the deoiled wax with the oil content of 2-3% is selected.

The primary sweating process comprises the following steps: wax cutting is carried out according to the volume ratio of 18%, 12%, 10% and 30%, and the required distillate wax is selected to carry out a secondary sweating process.

The sweating process for the secondary sweating comprises the following steps: wax cuts were made at 18%, 12%, 10%, and the desired wax fractions were selected and mixed.

And the target wax fraction obtained by the secondary sweating process enters a rectifying tower for cutting and deodorization, and then is subjected to clay refining and freezing forming to obtain a target product.

The four-cut or five-cut fraction wax can be selected in the secondary sweating process of selecting the required fraction wax.

In the selective deoiling wax, deoiling cerate with the melting point of more than 48 ℃ and the oil content of less than 5 percent is selected as a raw material.

The principle of the invention is as follows: the method comprises the steps of taking hydrocracking tail oil refined by furfural as a raw material, processing the hydrocracking tail oil by a ketone-benzene dewaxing deoiling device to obtain deoiled wax, further deoiling the deoiled wax by a sweating process twice, cutting out proper low-melting-point paraffin fraction, allowing the low-melting-point paraffin fraction to enter a rectifying tower for deodorization treatment, refining by white clay to improve the chromaticity and stability of the low-melting-point paraffin fraction, and performing freeze forming and packaging to obtain the low-melting-point paraffin for the soap.

The invention has the beneficial effects that: the low-melting-point paraffin fraction enters a rectifying tower for deodorization treatment, is improved in chromaticity and stability through clay refining, and is frozen, formed and packaged, so that the paraffin fraction has the advantages of no odor, proper chromaticity, excellent forming degree and the like.

Detailed Description

The invention is further illustrated by the following examples:

hydrocracking tail oil refined by furfural is used as raw material, and then is treated by a ketobenzene dewaxing and deoiling device to obtain deoiled wax

And further deoiling through two sweating processes, cutting out proper low-melting-point paraffin fraction, deodorizing the low-melting-point paraffin fraction in a rectifying tower, refining with argil to improve the chromaticity and stability, freezing, forming and packaging to obtain the low-melting-point paraffin for the soap.

The basic process is as follows: hydrocracking tail oil → furfural refining → ketone-benzol deoiling and dewaxing → selecting proper deoiling wax → primary sweating → selecting proper components to mix → secondary sweating → blending → cutting deodorization → white clay refining → ammonia cold forming → product.

The key points of the steps are as follows:

①, selecting deoiling wax with proper oil content, and generally controlling the oil content to be 2-3%;

② cutting seven kinds of wax in the first sweating process, cutting the wax according to 18%, 12%, 10% and 30%, selecting the required fraction wax to perform the second sweating process, and generally selecting the four-to five-fraction wax;

③ the secondary sweating cold oil has better effect, slower wax cutting speed, and finer wax cutting fraction, and the wax cutting is generally carried out according to 18%, 12%, 10% and 10%, and the proper wax fractions are selected and mixed;

④ the target wax fraction enters a rectifying tower to be cut and deodorized, and then is subjected to clay refining and freezing forming to obtain the target product.

The appropriate starting materials were subjected to one sweating and the test results were as follows:

the four waxes, five waxes and six waxes which are subjected to primary sweating are mixed and blended, and then secondary sweating is performed, and the test results are as follows:

and (3) blending four waxes, five waxes and six waxes to compare with the quality indexes of No. 48 soft wax:

sweating process parameters

Deodorization process parameters

Wherein the furfural refining conditions are that the solvent ratio is 0.5-3.0, the tower top temperatures of the degassing tower/the refining liquid recovery tower are 82/115/125 ℃, the tower bottom temperatures of the degassing tower/the refining liquid recovery tower are 82/115/125 ℃ and the outlet temperature of the heating furnace is 215 +/-5 ℃; the technological conditions of ketone-benzene deoiling are that the solvent composition mass ratio is 6: 4, the mass ratio of solvent dilution is 3.5, the cold spot temperature is 15 ℃, the dilution temperature is 10-15 ℃, the mass ratio of cold washing solvent is 0.1-0.5%, the temperature of cold washing solvent is minus 20/minus 10 ℃, the dewaxing filtration temperature is minus 20 ℃, and the addition amount of filter aid is 0.5%; the temperature rising rate of the primary sweating and the secondary sweating is 0.5-2 ℃/h; the mixing selection of the components is as follows: 40-55 ℃, oil content: not more than 15%; the cutting deodorization process conditions are as follows: 0.05-0.09MPa, tower top temperature: 90-130 ℃, bottom temperature: 160 ℃ and 200 ℃; the clay refining process conditions are as follows: 0.5-8%, refining temperature 90-130 ℃, refining time: 20-60 min; the technological conditions of ammonia cold forming are wax injection water temperature: 60-80 ℃ and the temperature of the cold room is 0-15 ℃.

The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.