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Soapstock solvent recycling process and equipment for miscella alkali refining output

A technology of mixing oil and soapstock, which is applied in the direction of fatty substance recovery, recycling technology, recovery of fat oil/fatty acid from waste, etc.

Inactive Publication Date: 2017-09-01
YINGKOU CHENGUANG PLANT EXTRACTION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects in the prior art, the problem to be solved by the present invention is to provide a drying and solvent recovery process and equipment for mixed oil and alkali refining soapstock which are easy to operate, ideal in treatment effect, low in cost and capable of continuous desolventization, and solve the problem of existing There are problems with equipment and processes

Method used

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  • Soapstock solvent recycling process and equipment for miscella alkali refining output

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Proceed as follows:

[0025] 21 tons of soapstock raw materials produced by cottonseed mixed oil alkali refining, the solvent content in the soapstock is 4%,

[0026] Contains 35% water, 61% soapstock and oil.

[0027] (1) The soapstock raw material is continuously pumped into the mixer by the conveying pump, and water with 30% of the soapstock weight is added as a diluent at the same time, the water temperature is 60 degrees, and the mixture is evenly stirred.

[0028] (2) The delivery pump pumps out the raw materials from the mixer and transports them to the heater, and enters the heater from the bottom of the heater. When passing through the heater, the steam is indirectly heated, and the heating temperature is 70°C.

[0029] (3) The soapstock coming out of the heater enters the falling film evaporator. The falling film evaporator is indirectly heated by steam. The soapstock is continuously heated in the falling film evaporator, and the evaporation is initially deso...

Embodiment 2

[0035] Proceed as follows:

[0036] 50 tons of soapstock raw materials produced by rice bran mixed oil alkali refining, soapstock contains 11% solvent and water

[0037] 35%, with soapstock and oil 54%.

[0038] (1) Continuously pump into the mixer by the transfer pump, add 25% water as a diluent at the same time, the water temperature is 60°C, and stir evenly.

[0039] (2) The raw material is drawn out from the mixer by the delivery pump and transported to the heater, and enters the heater from the bottom of the heater. When passing through the heater, the steam is indirectly heated, and the heating temperature is 60°C.

[0040] (3) The soapstock coming out of the heater enters the falling film evaporator. The falling film evaporator is indirectly heated by steam. The soapstock is continuously heated in the falling film evaporator, and the evaporation is preliminarily desolvated. The heating temperature is 75°C, so that the soapstock The solvent content of the solvent is re...

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Abstract

The invention discloses a soapstock solvent recycling process and equipment for miscella alkali refining output, relates to a soapstock treatment process and equipment for grease processing and production, and in particular to a soapstock solvent recycling process and equipment for miscella alkali refining output of rice bran and cottonseed grease. The equipment consists of a mixer, a heater, a falling film evaporator, a drier, a condenser, a water separation tank and the like which are connected in sequence. The process comprises the following steps: diluting, mixing, performing preheating treatment, performing evaporation pre-desolvation, performing drying treatment and performing condensation recycling. The equipment disclosed by the invention has the characteristics of being large in treatment capacity, simple in method, convenient to operate, capable of continuous production, low in production cost and the like, and particularly with respect to the treatment effect, the content of a solvent of treated soapstock is less than 800ppm, which is greatly less than national standards, so that later storage and transportation security is ensured, and multiple problems of conventional equipment and treatment processes are solved.

Description

technical field [0001] The invention relates to a technology and equipment for treating leftovers in oil processing, in particular to a soapstock solvent recovery process and equipment suitable for the mixed oil and alkali refining output of rice bran and cottonseed oil. Background technique [0002] Soapstock is the main by-product of mixed oil alkali refining. It is an important raw material for the production of synthetic detergents, decorative coatings, grease, pharmaceutical preparations, etc. Because a certain amount of n-hexane needs to be added as an extraction solvent in the mixed oil alkali refining process, there are still solvent residues in the soapstock produced, usually with a content of 1-3%. Because n-hexane is flammable, explosive, and volatile, this part of soapstock with high solvent content is very dangerous during storage, transportation, and processing, and it needs to be desolvated. Only after reaching the standard can it be stored, transported and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B13/02B01D1/00
CPCB01D1/00C11B13/02Y02W30/74
Inventor 韩少威暴海军和保修孔维军范志伟容志伟
Owner YINGKOU CHENGUANG PLANT EXTRACTION EQUIP