CN101338249A

CN101338249A - Decolorizing and dewaxing process for vegetable oil with one-step method

Info

Publication number: CN101338249A
Application number: CNA2007100161874A
Authority: CN
Inventors: 王明星
Original assignee: Shandong Sanxing Corn Industry Technology Co Ltd
Current assignee: Shandong Sanxing Corn Industry Technology Co Ltd
Priority date: 2007-07-05
Filing date: 2007-07-05
Publication date: 2009-01-07

Abstract

The invention provides a technology which can finish decolorization and dewaxing of vegetable oil within one step. The technology is described as following: after being heated, the vegetable oil needed to be treated is mixed with argil and active carbon; the mixture is sent into a decolorization tower for absorption; the materials after being absorbed then is sent into a deacidification tower for re-absorption; the materials after being re-absorbed then is pumped into a crystallizer for crystallization; the materials after being crystallized then is sent into a separator to separate the vegetable oil. The technology finishes decolorization and dewaxing treatment within one step. The materials after being decolorized directly enter into the decolorization tower without separating, with the result that the intermediate links between the decolorization and the dewaxing processes are reduced. The technology saves the equipment input and steam, power and manpower consumption necessary during the separation process, avoids the loss of the vegetable oil produced by the separation, has good decolorization and dewaxing effects, can recycle the argil and the active carbon when dewaxing, does not need to add filter acid any more, saves consumption costs of the filter acid, and greatly reduces the production cost of the vegetable oil.

Description

Single stage method is finished the technology of vegetables oil decolouring, dewaxing

Technical field

The invention provides the technology in a kind of vegetable oil production, especially a kind of decolouring, dewaxing technique.

Background technology

In production process of vegetable oil, need decolour and dewaxing treatment to the dried vegetables oil that neutralizes, to improve the quality of vegetables oil.Present decolouring, dewaxing treatment are carried out respectively, promptly decolour as discoloring agent with carclazyte, gac earlier, then, carclazyte, gac are separated from the vegetables oil after the decolouring.Add diatomite in the vegetables oil after the decolouring of isolating carclazyte, gac again, perlite dewaxes as flocculating aids, vegetables oil and flocculating aids after will dewaxing are at last separated.This processing sequence complexity is through twice sepn process.In the sepn process after decolouring, because of the part vegetables oil is mixed in carclazyte, the gac, this can cause the vegetables oil loss of about 0.3-0.5%.And this sepn process needs a large amount of steam, electric energy, manpower consumption, has strengthened production cost.

Summary of the invention

Technical problem to be solved by this invention is that the technology that provides a kind of single stage method to finish vegetables oil decolouring, dewaxing is finished to realize decolouring, one step of dewaxing treatment, simplifies production process.

The present invention realizes like this, single stage method is finished the vegetables oil decolouring, the technology of dewaxing, described technology is, pending vegetables oil is heated to 103 ℃-110 ℃, carclazyte with vegetables oil weight 1-3%, the gac of vegetables oil weight 0.1-0.3% mixes with vegetables oil, after the mixing, send into bleaching tower, adsorbed 20-30 minute, the material that will adsorb back formation is then directly sent into extracting tower together, adsorbed again 15-40 minute, the material that will adsorb back formation then again pumps into crystallizer, temperature of charge is reduced to 10 ℃-30 ℃, growing the grain 18-26 hour, then the material behind the growing the grain is sent into separation machinery and separate, isolate vegetables oil.

This vegetable oil decolouring, the technology of dewaxing, decolouring, one step of dewaxing treatment finishes, material after the decolouring is without separation, directly send into extracting tower, reduced decolouring, middle-chain between the dewaxing, thereby saved required equipment input and the steam of this separation, electric power and artificial consumption, the vegetables oil loss of having avoided this separation to cause, decolouring, dewaxing effect is good, and during dewaxing, carclazyte, the gac recycling does not need to add diatomite again, perlite is as flocculating aids, save the consumption costs of flocculating aids, thereby greatly reduced the production cost of vegetables oil.

Embodiment

Further specify the present invention below.

Pending vegetables oil before the decolouring is the dried vegetables oil of neutralization, the alkali refining oil of making after promptly the depickling of crude oil process is handled.

Bleaching tower, extracting tower, crystallizer, separation machinery etc. are decolouring, dewaxing, crystallization, separating device used in the existing treatment process, needn't transform above equipment.Described separation machinery is a filter.

Below be embodiments of the invention.

Embodiment 1

Pending vegetables oil is heated to 103 ℃, the carclazyte of vegetables oil weight 1%, the gac of vegetables oil weight 0.1% are mixed with vegetables oil, after the mixing, send into bleaching tower, adsorbed 20 minutes, the material that will adsorb back formation is then directly sent into extracting tower together, adsorbs 15 minutes again, and the material that will adsorb back formation then again pumps into crystallizer, temperature of charge is reduced to 10 ℃, growing the grain 18 hours is sent the material behind the growing the grain into filter then and is separated, and isolates vegetables oil.

Embodiment 2

Pending vegetables oil is heated to 110 ℃, the carclazyte of vegetables oil weight 3%, the gac of vegetables oil weight 0.3% are mixed with vegetables oil, after the mixing, send into bleaching tower, adsorbed 30 minutes, the material that will adsorb back formation is then directly sent into extracting tower together, adsorbs 40 minutes again, and the material that will adsorb back formation then again pumps into crystallizer, temperature of charge is reduced to 30 ℃, growing the grain 26 hours is sent the material behind the growing the grain into filter then and is separated, and isolates vegetables oil.

Embodiment 3

Pending vegetables oil is heated to 106 ℃, the carclazyte of vegetables oil weight 2%, the gac of vegetables oil weight 0.2% are mixed with vegetables oil, after the mixing, send into bleaching tower, adsorbed 25 minutes, the material that will adsorb back formation is then directly sent into extracting tower together, adsorbs 30 minutes again, and the material that will adsorb back formation then again pumps into crystallizer, temperature of charge is reduced to 20 ℃, growing the grain 20 hours is sent the material behind the growing the grain into filter then and is separated, and isolates vegetables oil.

Claims

1, single stage method is finished the vegetables oil decolouring, the technology of dewaxing, it is characterized in that, described technology is, pending vegetables oil is heated to 103 ℃-110 ℃, carclazyte with vegetables oil weight 1-3%, the gac of vegetables oil weight 0.1-0.3% mixes with vegetables oil, after the mixing, send into bleaching tower, adsorbed 20-30 minute, the material that will adsorb back formation is then directly sent into extracting tower together, adsorbed again 15-40 minute, the material that will adsorb back formation then again pumps into crystallizer, temperature of charge is reduced to 10 ℃-30 ℃, growing the grain 18-26 hour, then the material behind the growing the grain is sent into separation machinery and separate, isolate vegetables oil.