Desulfurization deordorization refining method of crude sulfate turpentine

A technology of sulfate turpentine and a refining method, which is applied in the directions of turpentine, chemical instruments and methods, can solve the problems of large environmental pollution, poor product quality and high processing cost, and achieves the advantages of reducing energy consumption, saving refining cost and simplifying refining process. Effect

Active Publication Date: 2015-03-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the above technical methods, there are some relatively serious technical problems or defects, such as cumbersome operation, high processing cost, poor refining effect, large environmental pollution, poor product quality, etc., and there is also the possibility of secondary pollution of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Place 20g granular activated carbon in 500ml 0.2mol / L copper chloride solution, stir ion exchange with 40℃ water bath for 2h, filter and dry after the exchange, roast in a vacuum drying oven at 300℃ for 2h to prepare loaded copper Ion activated carbon. Add 120g of sodium hypochlorite solution with 7% available chlorine content to 100g of crude sulfate turpentine with a total sulfur content of about 500mg / L, stir and react for 3h under a water bath at 50°C, then stand still for stratification and add to the oil phase 100g water, stirring and washing for 2h, repeat twice. Add 10g modified activated carbon and 5g4A molecular sieve into the oil phase, stir for 2h, and separate refined turpentine. The total sulfur content measured by the micro-coulometer is 7.32 ppm, and there is no irritating odor. The adsorbent can be recycled after being roasted at 300°C in a vacuum drying oven.

Embodiment 2

[0023] Put 20g granular activated carbon in 500ml 0.3mol / L nickel nitrate solution, stir ion exchange with 40℃ water bath for 2h, filter and dry after the exchange, roast in a vacuum drying oven at 300℃ for 2h to prepare a loaded nickel ion Activated carbon. Add 100g of sodium hypochlorite solution with 10% available chlorine to 100g of crude sulfate turpentine with a total sulfur content of about 500mg / L, stir and react for 3h in a water bath at 60℃, then stand still for stratification and add to the oil phase 100g water, stirring and washing for 2h, repeat twice. Add 10g of modified activated carbon and 5g of 5A molecular sieve to the oil phase, stir for 2h, and separate to obtain refined turpentine. The total sulfur content measured by the micro-coulometer is 8.76 ppm, and there is no irritating odor. Activated carbon can be recycled after being roasted at 300°C in a vacuum drying oven.

Embodiment 3

[0025] Put 20g granular activated carbon in 500ml 0.4mol / L copper nitrate solution, stir ion exchange with 40℃ water bath for 2h, filter and dry after the exchange, roast in a vacuum drying oven at 300℃ for 2h to prepare copper ions. Activated carbon. Add 120g of sodium hypochlorite solution with 10% available chlorine content to 100g of crude sulfate turpentine with a total sulfur content of about 500mg / L, stir and react for 3h under the condition of a 60℃ water bath, and then stand for stratification after the end, and add to the oil phase 120g water, stir and wash for 3h, repeat twice. Add 10g modified activated carbon and 10g4A molecular sieve to the oil phase, stir for 2h, and centrifuge to obtain refined turpentine. The total sulfur content measured by the micro-coulometer is 6.33ppm, and there is no irritating odor. Activated carbon can be recycled after being roasted at 300°C in a vacuum drying oven.

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Abstract

The present invention provides after-oxidation waster-washing separation and adsorption combined process so as to achieve efficient refining of crude sulfate turpentine. According to the present invention, the oxidant is a sodium hypochlorite solution with an effective chlorine content of 3-10%, and the adsorbent is a mixture of modified active carbon and a water absorption molecular sieve; the key of the specific refining method is that the primary after-oxidation waster-washing separation is performed, and then adsorption with the adsorbent is performed to remove irritating odor, such that the organic sulfur content in the crude sulfate turpentine can be efficiently removed, and the total sulfur content can meet the 10 ppm standard required by the industrial application requirement; and with the excessive oxidation, the application of the modified active carbon and water absorption molecular sieve mixture as the adsorbent, and other means, the refining process is simplified, the energy consumption is reduced, and the refining cost is saved.

Description

Technical field [0001] The invention is a novel process for removing sulfur-containing organic compounds in crude sulfate turpentine. Background technique [0002] Crude sulphate turpentine is a by-product produced in the kraft pulping process using coniferous materials as raw materials. The main components are α-pinene and β-pinene, and the main impurities are organic sulfides, including small molecular sulfur. Ether and mercaptan substances. With the development of the paper industry, the output of sulfated turpentine is increasing. Because of its low cost, it has gradually received attention. Especially when the traditional gum turpentine production process has been seriously affected by the increase in the cost of ester extraction, sulfated turpentine is becoming Become a resource worth developing and using. Because sulfated turpentine contains sulfur-containing organic matter, it has a foul odor, and it cannot be directly used in related industrial production. It must be r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F3/02
Inventor 季峰崎金汉强周亚苓何育苗刘卓王燕
Owner CHINA PETROLEUM & CHEM CORP
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