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Two-stage efficient soapstock desolventizing system for mixed oil refinement

A technology of mixing oil and soapstock, which is applied in the field of oil processing, which can solve the problems of high steam consumption, more mechanical stirring, and increased solvent loss, etc., and achieve the effect of low steam consumption, less mechanical stirring, and convenient operation

Inactive Publication Date: 2014-11-19
青岛和合汇途工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. Waste the soapstock and reduce the color and protein content of the meal: directly put the soapstock into the meal and steam off-line, which not only wastes the soapstock, but also reduces the color of the meal and the protein content in the meal
[0009] 2. Increase the loss of solvent: If alcohol and acetone are used and recovered, if the solvent contains sulfuric acid, the loss of solvent will increase
[0010] 3. Incomplete desolventization: after treatment, the residual solvent in soapstock cannot be effectively removed
[0011] 4. Intermittent production: continuous desolventization is not possible, and the efficiency is low
[0012] 5. High energy consumption: most of the heaters are equipped with indirect steam heating, and the steam consumption is high; the configuration of mechanical stirring is more, and the power consumption is high

Method used

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  • Two-stage efficient soapstock desolventizing system for mixed oil refinement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1) Pre-vacuumize

[0043] Send steam into the steam jet vacuum pump 7 to discharge the air in the soapstock desolventization tank 4 until it reaches the designed vacuum degree.

[0044] 2), add a small amount of direct steam to the desolventization tank first, raise the temperature of the tank and further discharge the air, and then feed.

[0045] After pre-evacuation is completed, the soapstock delivery pump 2 is turned on to send the soapstock into the fast steam heater 3 to be heated to a certain temperature and then enter the soapstock precipitation tank 4.

[0046] 3) cycle

[0047] When the liquid level in the soapstock desolventization tank 4 reaches a certain level, the soapstock circulating pump 5 is opened, so that the soapstock forms an external circulation and enters the soapstock desolventization tank 4 again.

[0048] 4) Heating

[0049] Further open the valve of the directly heated steam at the bottom of the soapstock desolventization tank 4, adjust th...

Embodiment 2

[0055] 1) Pre-vacuumize

[0056] Send steam into the steam jet vacuum pump 7 to discharge the air in the soapstock desolventization tank 4 until it reaches the designed vacuum degree.

[0057] 2) Feeding

[0058] After completing the pre-vacuumization, start the soapstock delivery pump 2 to send the soapstock into the fast steam heater 3 to be heated to a certain temperature and then enter the soapstock precipitation tank 4.

[0059] 3) cycle

[0060] When the liquid level in the soapstock desolventization tank 4 reaches a certain level, the soapstock circulating pump 5 is opened, so that the soapstock forms an external circulation and enters the soapstock desolventization tank 4 again.

[0061] 4) Heating

[0062] Open the valve of the direct heating steam at the bottom of the soapstock desolventization tank 4, adjust the soapstock temperature in the tank to reach a certain desolventization temperature by controlling the opening of the valve, open the demister 11 to remove...

Embodiment 3

[0066] 1) Pre-vacuumize

[0067] Direct steam is passed into the soapstock desolventization tank, and the air in the soapstock desolventization tank 4 is discharged, and nitrogen replacement can also be used to discharge the air, and then steam is introduced.

[0068] 2) Feeding

[0069] Open the soapstock delivery pump 2 and send the soapstock into the fast steam heater 3 and enter the soapstock precipitation tank 4 after being heated to a certain temperature.

[0070] 3) cycle

[0071] When the liquid level in the soapstock desolventization tank 4 reaches a certain level, the soapstock circulating pump 5 is opened, so that the soapstock forms an external circulation and enters the soapstock desolventization tank 4 again.

[0072] 4) Heating

[0073] Further open the valve of the directly heated steam at the bottom of the soapstock desolventization tank 4, adjust the soapstock temperature in the tank to reach a certain desolventization temperature by controlling the openin...

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Abstract

The invention relates to a two-stage efficient soapstock desolventizing system for mixed oil refinement. The system comprises a soapstock temporary storage tank, a soapstock conveying pump, a quick steam heater, a soapstock desolventizing tank and a soapstock circulating pump which are connected in sequence. According to the system, soapstock is quickly and efficiently heated through the quick steam heater; the soapstock is subjected to two-stage multi-time spraying desolventizing in the soapstock desolventizing tank, and especially the soapstock is atomized and subjected to two-stage multi-time desolventizing in the desolventizing tank through circulation; preferably, a foam remover is added, a defoaming agent is not added into the soapstock, the operation is convenient, and the desolventizing is continuous, so that the solvent content of the soapstock can be reduced to the maximum extent and a solvent after removal can be recovered to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of oil processing, in particular to a two-stage high-efficiency soapstock desolventization system suitable for refining edible oil mixed oil. Background technique [0002] In the process of edible oil processing, in order to reduce energy consumption, reduce waste water discharge, improve product quality, and increase production yield, many edible oil processing enterprises adopt mixed oil refining technology. Mixed oil refining refers to the refining process in which the solvent and leached oil are mixed in the leaching workshop. During the refining process of mixed oil, a by-product-soapstock will inevitably be separated. The soapstock contains a large amount of solvent, and the solvent content is generally between 8000PPM-20000PPM, or even higher. This part of soapstock with high solvent content is extremely dangerous during storage, transportation and processing. The bottleneck of soapstock desolventiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B13/02
CPCY02W30/74
Inventor 李杰白长军王永富王代俊从瑞涛刘耀欣戚桂斌
Owner 青岛和合汇途工程技术有限公司
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