CN118384681A - Physicochemical solvent and method for efficiently removing carbon disulfide - Google Patents

Abstract

The present invention relates to a physical and chemical solvent for efficiently removing carbon disulfide. The components of the physical and chemical solvent include: ethanolamine, diethanolamine, N-methylpyrrolidone, as well as a cosolvent, a desulfurization accelerator and a defoamer. The organic solvent can be directly mixed with water to prepare an aqueous solution with a mass fraction of 25 to 50% as an absorption solution, and the removal rate of low-concentration carbon disulfide can reach up to 96%. Compared with the existing alcohol amine solvents for removing carbon disulfide, it has higher carbon disulfide solubility performance and removal efficiency.

Description

Physical and chemical solvent and method for efficiently removing carbon disulfide

Technical Field

The invention relates to a physical and chemical solvent for efficiently removing carbon disulfide, belonging to the technical field of desulfurization.

Background technique

Carbon disulfide is widely present in the raw materials and products of fossil energy conversion, such as coke oven gas, natural gas, liquefied petroleum gas, gasoline, solvent oil, coking benzene and other light hydrocarbons. Carbon disulfide in chemical raw materials is easily hydrolyzed to generate hydrogen sulfide during the production process, corroding production equipment and causing great economic losses. In industrial production such as synthetic methanol, alkylation process and synthetic ammonia, carbon disulfide can also poison and deactivate catalysts, affecting the stable operation of production.

At present, the methods for removing carbon disulfide mainly include dry desulfurization and wet desulfurization. Among them, dry desulfurization technology is a process of directly removing _CS2 or converting it into inorganic sulfur and then removing it using a catalyst or adsorbent. Dry desulfurization has high precision, low investment and operating costs, and basically no power consumption. When the sulfur content of the raw gas is low or the gas flow rate is small, the effect of dry desulfurization is more ideal. The disadvantage of dry desulfurization technology is that the removal of carbon disulfide requires two steps: first, hydrogenation or hydrolysis at a temperature of 300 to 450°C to convert it into hydrogen sulfide, and then using a desulfurizer to remove hydrogen sulfide. In addition, when the sulfur content of the raw gas is high or the gas flow rate is large, the precision of carbon disulfide removal in dry desulfurization will be significantly reduced.

Wet desulfurization technology uses a liquid absorbent solution to dissolve and absorb _CS2 or to make _CS2 react chemically with a solvent to convert it into a component that dissolves in the solvent. Wet desulfurization has the advantages of large absorption capacity, high desulfurization efficiency, and recyclable absorbent solution, and is suitable for the desulfurization treatment of various sulfur-containing gases. Physical and physical adsorption methods. At present, the most widely used wet desulfurization technology is chemical absorption. The chemical absorption method usually uses various alcohol amine solvents as absorption solvents, and uses the strong alkalinity of alcohol amine solutions to remove acidic gases such as carbon disulfide, hydrogen sulfide, and carbonyl sulfide from the gas at the same time. However, the chemical absorption method also has some disadvantages, such as the absorption solvent alcohol amine solution used is a strong alkaline organic base, which has almost no selectivity for acidic gases in various gases. In addition, in actual production, there are also problems such as easy foaming, degradation and deterioration, and high temperature during the regeneration process, which leads to serious corrosion of the regeneration system.

Summary of the invention

In order to solve the technical problems that the alcohol amine solvent absorbent in the chemical absorption method in the prior art has low selectivity, a single alcohol amine solvent has unsatisfactory desulfurization efficiency when removing carbon disulfide, and the existing alcohol amine solvent is prone to foaming, degradation and deterioration during the production process, and the temperature of the regeneration process is high, the present invention provides a physical and chemical solvent for efficiently removing carbon disulfide.

To solve the above technical problems, the present invention is implemented through the following technical solutions.

A physical and chemical solvent for efficiently removing carbon disulfide, the composition and formula of which are:

Alcoholamine solvent, 14-20 (wt.)%;

Physical solvent, 10-30 (wt.)%;

Cosolvent, 0.5-2 (wt.)%;

Desulfurization accelerator, 0.5-1 (wt.)%;

Defoaming agent, 0-0.1 (wt.) %;

The balance was deionized water.

Preferably, the alcoholamine solvent is one of ethanolamine, diethanolamine and 3-methylaminoethanol.

Preferably, the physical solvent is one of N-methylpyrrolidone and n-butanol.

Preferably, the co-solvent is N,N-dimethylacetamide.

Preferably, the desulfurization accelerator is acetic acid.

Preferably, the defoaming agent is dimethyl silicone oil.

A method for efficiently removing carbon disulfide comprises the steps of (1) passing a raw gas containing carbon disulfide into a physical and chemical solvent at a certain gas flow rate under normal temperature and pressure conditions, bubbling and absorbing for a period of time to obtain purified gas and physical and chemical solvent waste liquid from which carbon disulfide has been removed; and (2) filtering the physical and chemical solvent waste liquid to recover the sulfur paste, and then heating and regenerating it to recycle it as a replenishing liquid for fresh physical and chemical solvent liquid; characterized in that the physical and chemical solvent is a physical and chemical solvent for efficiently removing carbon disulfide as described in any one of claims 1 to 6.

Furthermore, the gas flow rate is determined based on the chemical reaction stoichiometric ratio of the detected carbon disulfide content in the raw gas containing carbon disulfide and the alcohol amine solvent.

Furthermore, the method for efficiently removing carbon disulfide comprises at least a raw gas delivery system, a physical and chemical solvent configuration system, a first desulfurization reaction device and a second desulfurization reaction device arranged in series, and a desulfurization waste liquid treatment and regeneration system;

The first desulfurization reaction device and the second desulfurization reaction device are both provided with a shower nozzle at the top, a raw gas input port at the bottom, and a purified gas discharge port at the top;

Under normal temperature and pressure conditions, the physical and chemical solvent is transported to the closed first desulfurization reaction device through the raw gas delivery system at a certain flow rate, and is reversely contacted with the raw gas containing carbon disulfide that is bubbled in from the bottom of the desulfurization reaction device at a certain gas flow rate through a shower nozzle. After the raw gas is washed, leached and absorbed by the physical and chemical solvent, it is discharged from the exhaust port at the top of the first desulfurization reaction device, and then enters the second desulfurization reaction device through the raw gas delivery system; the physical and chemical solvent after the absorption reaction is discharged through the waste liquid discharge port located in the middle of the first desulfurization reaction device and then sent to the desulfurization waste liquid treatment and regeneration system to regenerate the solvent;

The raw gas containing a small amount of carbon disulfide from the first desulfurization reaction unit is successively absorbed by bubbling and washed by leaching with the physical and chemical solvent in the second desulfurization reaction unit, and the obtained purified gas is discharged through the exhaust port at the top of the second desulfurization reaction unit; the physical and chemical solvent after the reaction is discharged through the waste liquid outlet located in the middle of the second desulfurization reaction unit and then sent to the desulfurization waste liquid treatment and regeneration system to regenerate the solvent;

The desulfurization waste liquid from the first desulfurization reaction unit and the second desulfurization reaction unit is heated and regenerated in the desulfurization waste liquid treatment and regeneration system, and the obtained regenerated liquid is used as a supplementary liquid for the fresh liquid of the physical and chemical solvent and is recycled.

Furthermore, the liquid flow rate of the physicochemical solvent entering the first desulfurization reaction unit and the second desulfurization reaction unit is 20-30 mL/min; the gas rate of the carbon disulfide-containing raw gas entering the first desulfurization reaction unit and the second desulfurization reaction unit is determined based on the chemical reaction stoichiometric ratio of the detected carbon disulfide content in the raw gas and the alcohol amine solvent.

The technical solution of the present invention has the following obvious advantages compared with the prior art.

(1) The physical and chemical solvent of the present invention can improve the desulfurization efficiency of carbon disulfide in the raw gas containing carbon disulfide. The data show that the desulfurization efficiency of the physical and chemical solvent of the present invention for removing carbon disulfide is as high as 90% or more in the embodiment. The alcohol amine solvent reacts with carbon disulfide to generate dithiocarbamate to catalyze the hydrolysis of carbon disulfide into carbonyl sulfide and hydrogen sulfide to absorb carbon disulfide. The presence of the physical absorption solvent increases the physical solubility of the physical and chemical solvent of the present invention for carbon disulfide through non-covalent interactions between molecules, thereby increasing the reaction rate of the solvent absorbing carbon disulfide. The present invention forms a mixed auxiliary agent component by supplementing the physical and chemical solvent for efficient removal of carbon disulfide with a co-solvent, a desulfurization accelerator and a defoamer. The presence of the co-solvent can increase the stability of the mixture components; the desulfurization accelerator reduces the activation energy of the desulfurization reaction, thereby accelerating the conversion or removal of sulfided substances; the defoamer can form a thin film on the surface of the liquid to reduce the surface tension, thereby reducing the formation of foam.

(2) The highly efficient carbon disulfide removal production process of the present invention can be carried out at room temperature and pressure, the reaction temperature is 25°C, the reaction conditions are mild, the organic amine desulfurization rich liquid after absorbing carbon disulfide can be recycled after heating and regeneration, the operation process is simple, and the operating cost is low. In the highly efficient carbon disulfide removal production process of the present invention, the composite solvent has a strong ability to remove sulfides, and the desulfurization efficiency is as high as more than 90%.

Detailed ways

The following describes the embodiments of the present invention in further detail through specific examples.

[Example 1]

Prepare the physical and chemical solvent for efficient removal of carbon disulfide according to the formula:

(1) Composition and formula: ethanolamine, 6 parts; N-methylpyrrolidone, 11.1 parts; water, 20.9 parts; cosolvent N,N-dimethylacetamide, 1.5 parts; desulfurization accelerator acetic acid, 0.47 parts; defoaming agent dimethyl silicone oil, 0.03 parts.

(2) Preparation method: Weigh 6 g of ethanolamine and 11 g of N-methylpyrrolidone, mix and stir evenly to obtain an organic solvent; then add 20.9 g of water and mix evenly to form an aqueous solution of the organic solvent; then weigh 1.5 g of co-solvent N,N-dimethylacetamide, 0.47 g of desulfurization accelerator acetic acid, and 0.03 g of defoaming agent dimethyl silicone oil and add them to the aqueous solution of the organic solvent, mix evenly to obtain a physical and chemical solvent for removing carbon disulfide.

The physicochemical solvent for removing carbon disulfide with high efficiency prepared by the above method is used to carry out a test for removing carbon disulfide-containing gas. The specific process is as follows: under normal temperature and pressure conditions, a raw gas with a carbon disulfide concentration of 678.57 mg/ ^m3 is bubbled into the physicochemical solvent at a gas flow rate of 30 mL/min, and the bubbling absorption is performed for a period of time to obtain purified gas and physicochemical solvent waste liquid from which carbon disulfide is removed; the physicochemical solvent waste liquid is filtered, and then heated to regenerate the physicochemical solvent waste liquid, and used as a replenisher for fresh physicochemical solvent liquid for recycling.

During the test, the sampler was used to collect the purified gas after the carbon disulfide was removed. The carbon disulfide concentration after desulfurization was 31.52 mg/m ³ detected by gas chromatograph. The carbon disulfide removal rate was calculated to be 95.35%. The calculation formula is as follows:

N = (A ₀ -A)/A ₀ × 100%,

Where: N is the carbon disulfide removal efficiency; _A0 is the initial carbon disulfide concentration, in mg/m ³ ; A is the carbon disulfide concentration after desulfurization, in mg/m ³ .

[Example 2]

Prepare the physical and chemical solvent for efficient removal of carbon disulfide according to the formula:

(1) Composition and formula: ethanolamine, 6 parts; N-methylpyrrolidone, 13 parts; water, 19 parts; co-solvent N,N-dimethylacetamide, 1.5 parts; desulfurization accelerator acetic acid, 0.47 parts; defoaming agent dimethyl silicone oil, 0.03 parts.

(2) Preparation method: Weigh 6 g of ethanolamine and 13 g of N-methylpyrrolidone, mix and stir evenly to obtain an organic solvent; then add 19 g of water and mix evenly to form an aqueous solution of the organic solvent; then weigh 1.5 g of co-solvent N,N-dimethylacetamide, 0.47 g of desulfurization accelerator acetic acid, and 0.03 g of defoaming agent dimethyl silicone oil and add them to the aqueous solution of the organic solvent, mix evenly to obtain a physical and chemical solvent for removing carbon disulfide.

The physicochemical solvent for removing carbon disulfide with high efficiency prepared by the above method is used to carry out a test for removing carbon disulfide-containing gas. The specific process is as follows: under normal temperature and pressure conditions, a raw gas with a carbon disulfide concentration of 678.57 mg/ ^m3 is bubbled into the physicochemical solvent at a gas flow rate of 30 mL/min, and the bubbling absorption is performed for a period of time to obtain purified gas and physicochemical solvent waste liquid from which carbon disulfide is removed; the physicochemical solvent waste liquid is heated and regenerated, and used as a replenisher of the fresh physicochemical solvent liquid for recycling.

During the test, the purified gas from which carbon disulfide was removed was collected by a sampler, and the carbon disulfide concentration after desulfurization was 33.93 mg/m ³ as detected by a gas chromatograph. The carbon disulfide removal rate was calculated to be 95%. The calculation formula is shown in Example 1.

[Example 3]

Prepare the physical and chemical solvent for efficient removal of carbon disulfide according to the formula:

(1) Composition and formula: diethanolamine, 6 parts; N-methylpyrrolidone, 18 parts; water, 19 parts; co-solvent N,N-dimethylacetamide, 1.5 parts; desulfurization accelerator acetic acid, 0.47 parts; defoaming agent dimethyl silicone oil, 0.03 parts.

(2) Preparation method: Weigh 6 g of diethanolamine and 18 g of N-methylpyrrolidone, mix and stir evenly to obtain an organic solvent; then add 19 g of water and mix evenly to form an aqueous solution of the organic solvent; then weigh 1.5 g of co-solvent N,N-dimethylacetamide, 0.47 g of desulfurization accelerator acetic acid, and 0.03 g of defoaming agent dimethyl silicone oil and add them to the aqueous solution of the organic solvent, mix evenly to obtain a physical and chemical solvent for removing carbon disulfide.

The physicochemical solvent for removing carbon disulfide with high efficiency prepared by the above method was used to carry out a test for removing carbon disulfide-containing gas. The specific process is as follows: under normal temperature and pressure conditions, a raw gas with a carbon disulfide concentration of 678.57 mg/ ^m3 was bubbled into the physicochemical solvent at a gas flow rate of 30 mL/min, and the bubbling absorption was performed for a period of time to obtain purified gas and physicochemical solvent waste liquid from which carbon disulfide was removed; the physicochemical solvent waste liquid was heated and regenerated, and used as a replenisher of the fresh physicochemical solvent liquid for recycling.

During the test, the sampler was used to collect the purified gas after the carbon disulfide was removed. The carbon disulfide concentration after desulfurization was 27.14 mg/m ³ as detected by gas chromatograph. The carbon disulfide removal rate was calculated to be 96%. The calculation formula is shown in Example 1.

[Example 4]

Prepare the physical and chemical solvent for efficient removal of carbon disulfide according to the formula:

(1) Composition and formula: 2-methylaminoethanol, 5 parts; n-butanol, 6.4 parts; water, 22.6 parts; cosolvent N,N-dimethylacetamide, 1.5 parts; desulfurization accelerator acetic acid, 0.47 parts; defoaming agent dimethyl silicone oil, 0.03 parts.

(2) Preparation method: Weigh 5 g of 2-methylaminoethanol and 6.4 g of n-butanol, mix and stir evenly to obtain an organic solvent; then add 22.6 g of water and mix evenly to form an aqueous solution of the organic solvent; then weigh 1.5 g of co-solvent N,N-dimethylacetamide, 0.47 g of desulfurization accelerator acetic acid, and 0.03 g of defoaming agent dimethyl silicone oil and add them to the aqueous solution of the organic solvent, mix evenly to obtain a physical and chemical solvent for removing carbon disulfide.

The physicochemical solvent for removing carbon disulfide with high efficiency prepared by the above method was used to carry out a test for removing carbon disulfide-containing gas. The specific process is as follows: under normal temperature and pressure conditions, a raw gas with a carbon disulfide concentration of 678.57 mg/ ^m3 was bubbled into the physicochemical solvent at a gas flow rate of 30 mL/min, and the bubbling absorption was performed for a period of time to obtain purified gas and physicochemical solvent waste liquid from which carbon disulfide was removed; the physicochemical solvent waste liquid was heated and regenerated, and used as a replenisher of the fresh physicochemical solvent liquid for recycling.

During the test, the sampler was used to collect the purified gas after the carbon disulfide was removed. The carbon disulfide concentration after desulfurization was 3.44 mg/m ³ as detected by gas chromatograph. The carbon disulfide removal rate was calculated to be 99.5%. The calculation formula is shown in Example 1.

[Comparative Example 1]

The composition and formula of the physical and chemical solvent for removing carbon disulfide in Comparative Example 1 are: diethanolamine, 6 parts; water, 32 parts; cosolvent, N,N-dimethylacetamide, 1.5 parts; desulfurization accelerator acetic acid, 0.47 parts; defoamer dimethyl silicone oil, 0.03 parts. The preparation method is: weigh 6 g of diethanolamine to obtain an organic solvent; then add 32 g of water, mix evenly, and form an aqueous solution of the organic solvent; then weigh 1.5 g of cosolvent N,N-dimethylacetamide, 0.47 g of desulfurization accelerator acetic acid, and 0.03 g of defoamer dimethyl silicone oil and add them to the aqueous solution of the aforementioned organic solvent, mix evenly, and obtain a physical and chemical solvent for removing carbon disulfide.

The carbon disulfide-containing gas removal test was carried out using the physical and chemical solvent for efficiently removing carbon disulfide. The specific process is as follows: under normal temperature and pressure conditions, a raw gas with a carbon disulfide concentration of 678.57 mg/ ^m3 is bubbled into the physical and chemical solvent at a gas flow rate of 30 mL/min, and the bubbling absorption is performed for a period of time to obtain purified gas and physical and chemical solvent waste liquid from which carbon disulfide is removed; the physical and chemical solvent waste liquid is heated and regenerated and used as a replenishing liquid for fresh physical and chemical solvent liquid for recycling.

During the test, the sampler was used to collect the purified gas after the carbon disulfide was removed. The carbon disulfide concentration after desulfurization was 169.64 mg/m ³ as detected by gas chromatograph. The carbon disulfide removal rate was calculated to be 75%. The calculation formula is shown in Example 1.

[Comparative Example 2]

The composition and formula of the physical and chemical solvent for removing carbon disulfide in Comparative Example 2 are: ethanolamine, 6 parts; water, 32 parts; cosolvent N,N-dimethylacetamide, 1.5 parts; desulfurization accelerator acetic acid, 0.47 parts; defoamer dimethyl silicone oil, 0.03 parts. The preparation method is: weigh 6g of ethanolamine to obtain an organic solvent; then add 32g of water, mix evenly, and form an aqueous solution of the organic solvent; then weigh 1.5g of cosolvent N,N-dimethylacetamide, 0.47g of desulfurization accelerator acetic acid, and 0.03g of defoamer dimethyl silicone oil and add them to the aforementioned aqueous solution of the organic solvent, mix evenly, and obtain the physical and chemical solvent for removing carbon disulfide.

The carbon disulfide-containing gas removal test was carried out using the physical and chemical solvent for efficiently removing carbon disulfide. The specific process is as follows: under normal temperature and pressure conditions, a raw gas with a carbon disulfide concentration of 678.57 mg/ ^m3 is bubbled into the physical and chemical solvent at a gas flow rate of 30 mL/min, and the bubbling absorption is performed for a period of time to obtain purified gas and physical and chemical solvent waste liquid from which carbon disulfide is removed; the physical and chemical solvent waste liquid is heated and regenerated and used as a replenishing liquid for fresh physical and chemical solvent liquid for recycling.

During the test, the sampler was used to collect the purified gas after the carbon disulfide was removed. The carbon disulfide concentration after desulfurization was 223.93 mg/m ³ as detected by gas chromatograph. The carbon disulfide removal rate was calculated to be 67%. The calculation formula is shown in Example 1.

By comparing the removal efficiency of carbon disulfide in Example 1 and Comparative Example 2, it can be seen that the removal efficiency of carbon disulfide is improved by 20% by adding physical solvent N-methylpyrrolidone to the solvent. Further comparing the removal efficiency of carbon disulfide in Example 3 and Comparative Example 2, it is found that the removal efficiency of carbon disulfide is consistent with the law of the comparison of the removal efficiency of carbon disulfide in Example 1 and Comparative Example 2, which fully shows that in the physical and chemical solvent formula of the present invention for efficient removal of carbon disulfide, there is an obvious synergistic effect between the organic amine solvent and the physical solvent, that is: the use of the physical solvent can increase the concentration of sulfide in the liquid phase, thereby promoting the reaction rate between the alkaline organic amine compound and carbon disulfide. At the same time, the physical solvent can also quickly absorb carbon disulfide from the gas phase into the liquid phase, thereby improving the contact efficiency of carbon disulfide with the chemical solvent. The role of the alcohol amine solvent is to make the desulfurization reaction more thorough, completely converting carbon disulfide into insoluble products, thereby effectively removing carbon disulfide in the waste gas. The two jointly promote the improvement of the final desulfurization efficiency.

Comparing the removal efficiency of carbon disulfide in Example 4 with that in Example 1, Example 2, and Example 3, it can be seen that when n-butanol is used as the physical solvent in the formula, the desulfurization effect is better.

In addition, in the physical and chemical solvent formula for efficient removal of carbon disulfide of the present invention, adding 0.5 to 2 (wt.)% N,N-dimethylacetamide (DMF) based on the total mass of the solvent can promote the compatibility and stability of the components in the formula, and the high boiling point, low vapor pressure, polar solvent properties and chemical inertness of DMF will not affect or interfere with the desulfurization reaction under high temperature or high pressure conditions, but can be used as a co-solvent to expand the application range of the physical and chemical solvent for efficient removal of carbon disulfide of the present invention for removing carbon disulfide under different conditions.

In the physical and chemical solvent formula for efficient removal of carbon disulfide of the present invention, adding an appropriate amount of desulfurization accelerator acetic acid and defoamer dimethyl silicone oil can further improve the use performance of the physical and chemical solvent for efficient removal of carbon disulfide. Wherein, adding an appropriate amount of acetic acid helps to promote the chemical reaction between sulfide and desulfurizer. Through catalysis and product formation, acetic acid can enhance the efficiency of desulfurizer, so that sulfide can be effectively removed under relatively mild conditions, reducing the required desulfurization dosage. After adding the defoamer dimethyl silicone oil, the foaming phenomenon of the solution is significantly alleviated during the test. Therefore, after adding the dimethyl silicone oil defoamer, the stability of the desulfurization system can be improved, and the problems of poor liquid flow, blocked pipelines or increased system pressure caused by foam generation can be solved.

Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the protection scope of the invention.

Claims (10)

1. A physical and chemical solvent for efficiently removing carbon disulfide, characterized in that the composition and formula of the physical and chemical solvent are: Alcoholamine solvent, 14-20 (wt.)%; Physical solvent, 10-30 (wt.)%; Cosolvent, 0.5-2 (wt.)%; Desulfurization accelerator, 0.5-1 (wt.)%; Defoaming agent, 0-0.1 (wt.) %; The balance was deionized water. 2. The physicochemical solvent for efficiently removing carbon disulfide according to claim 1, wherein the alcohol amine solvent is one of ethanolamine, diethanolamine, and 3-methylaminoethanol. 3. The physical and chemical solvent for efficient removal of carbon disulfide according to claim 1, characterized in that the physical solvent is one of N-methylpyrrolidone and n-butanol. 4. The physical and chemical solvent for efficient removal of carbon disulfide according to claim 1, characterized in that the co-solvent is N,N-dimethylacetamide. 5. The physical and chemical solvent for efficiently removing carbon disulfide according to claim 1, characterized in that the desulfurization accelerator is acetic acid. 6. The physical and chemical solvent for efficiently removing carbon disulfide according to claim 1, characterized in that the defoamer is dimethyl silicone oil. 7. A method for efficiently removing carbon disulfide, comprising the steps of (1) passing a raw gas containing carbon disulfide into a physical and chemical solvent at a certain gas flow rate under normal temperature and pressure conditions, bubbling and absorbing for a period of time to obtain a purified gas and a physical and chemical solvent waste liquid after the carbon disulfide is removed; and (2) filtering the physical and chemical solvent waste liquid to recover the sulfur paste, and then heating and regenerating it to recycle it as a replenishing liquid for fresh physical and chemical solvent liquid; characterized in that the physical and chemical solvent is a physical and chemical solvent for efficiently removing carbon disulfide described in any one of claims 1 to 6. 8. The method for efficiently removing carbon disulfide according to claim 7 is characterized in that the gas flow rate is determined based on the chemical reaction stoichiometric ratio of the carbon disulfide content in the detected carbon disulfide-containing feed gas and the alcohol amine solvent. 9. The method for efficiently removing carbon disulfide according to claim 7 or 8, characterized in that it comprises at least a raw gas delivery system, a physical and chemical solvent configuration system, a first desulfurization reaction device and a second desulfurization reaction device arranged in series, and a desulfurization waste liquid treatment and regeneration system; The first desulfurization reaction device and the second desulfurization reaction device are both provided with a shower nozzle at the top, a raw gas input port at the bottom, and a purified gas discharge port at the top; Under normal temperature and pressure conditions, the physical and chemical solvent is transported to the closed first desulfurization reaction device through the raw gas delivery system at a certain flow rate, and is reversely contacted with the raw gas containing carbon disulfide that is bubbled in from the bottom of the desulfurization reaction device at a certain gas flow rate through a shower nozzle. After the raw gas is washed, leached and absorbed by the physical and chemical solvent, it is discharged from the exhaust port at the top of the first desulfurization reaction device, and then enters the second desulfurization reaction device through the raw gas delivery system; the physical and chemical solvent after the absorption reaction is discharged through the waste liquid discharge port located in the middle of the first desulfurization reaction device and then sent to the desulfurization waste liquid treatment and regeneration system to regenerate the solvent; The raw gas containing a small amount of carbon disulfide from the first desulfurization reaction unit is successively absorbed by bubbling and washed by leaching with the physical and chemical solvent in the second desulfurization reaction unit, and the obtained purified gas is discharged through the exhaust port at the top of the second desulfurization reaction unit; the physical and chemical solvent after the reaction is discharged through the waste liquid outlet located in the middle of the second desulfurization reaction unit and then sent to the desulfurization waste liquid treatment and regeneration system to regenerate the solvent; The desulfurization waste liquid from the first desulfurization reaction unit and the second desulfurization reaction unit is heated and regenerated in the desulfurization waste liquid treatment and regeneration system, and the obtained regenerated liquid is used as a supplementary liquid for the fresh liquid of the physical and chemical solvent and is recycled. 10. The method for efficiently removing carbon disulfide according to claim 9 is characterized in that: the liquid flow rate of the physicochemical solvent entering the first desulfurization reaction unit and the second desulfurization reaction unit is 20-30 mL/min; the gas rate of the carbon disulfide-containing raw gas entering the first desulfurization reaction unit and the second desulfurization reaction unit is determined according to the chemical reaction stoichiometric ratio of the carbon disulfide content in the detected raw gas to the alcohol amine solvent.