Grease high-pressure hydrolysis production method and production device by recycling sweet water

A production method and technology of a production device, which are applied in the production of fatty acids, preparation/refining of fatty acids, separation of immiscible liquids, etc., can solve the problems of high COD content, high treatment costs, environmental pollution, etc., so as to protect the environment and reduce waste water discharge. , the effect of reducing production costs

Inactive Publication Date: 2016-01-20
HANGZHOU OIL & FAT CHEM +1
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to statistics, many sets of hydrolysis devices are currently in operation in my country, with an annual output of more than 1 million tons, and a large amount of low-concentration crude sweet water is also produced. Due to the low initial concentration of crude sweet water, generally 12% to 25%, After three-effect or four-effect evaporation and concentration to 75% or more, it enters the distillation tower for further distillation and purification to more than 99%. Among them, after three-effect or four-effect evaporation and condensation, a lar

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Grease high-pressure hydrolysis production method and production device by recycling sweet water

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] A production device for high-pressure hydrolysis of fats and oils for recycling sweet water, comprising a hydrolysis tower 4 and a three-effect evaporator connected in sequence; the high-pressure steam 1 is input into the steam inlet of the hydrolysis tower through a pipeline and a steam flow meter 2 is provided on the pipeline Steam one-way valve 3; grease 5 is fed into the grease inlet of the hydrolysis tower through a pipeline, and the pipeline is provided with a grease high-pressure pump 6, a grease flow meter 7, and a grease one-way valve 8.

[0028] The fatty acid 9 (lower density) produced by the hydrolysis reaction is discharged from the top of the hydrolysis tower 4 and exchanges heat with the process water 21 entering the hydrolysis tower; the sweet water 10 (the mixture of glycerin and water with higher density) produced by the hydrolysis reaction is discharged from the hydrolysis tower The bottom is discharged and exchanges heat with the grease...

Example Embodiment

[0031] Example 2

[0032] A production method of high-pressure hydrolysis of fats and oils using sweet water:

[0033] The lard from the external storage tank is pressurized by the grease high-pressure pump 6 and then enters the hydrolysis tower 4 at a flow rate of 8 tons / hour. The process water 21 is pressurized by the process water high-pressure pump 22 and then enters the hydrolysis tower at a flow rate of 5.5 tons / hour. The 6.0MPa high-pressure steam 1 enters the hydrolysis tower at a rate of 1 ton / hour. The lard and process water undergo a hydrolysis reaction at a temperature of 260°C and a pressure of 6.0 MPa to generate 7.925 tons of fatty acids and 6.575 tons of sweet water ( The concentration is 13%); the fatty acid 9 produced by the hydrolysis reaction is discharged from the top of the hydrolysis tower 4 and exchanges heat with the process water 21, and the sweet water 10 produced by the hydrolysis reaction is discharged from the bottom of the hydrolysis tower and exchang...

Example Embodiment

[0035] Example 3

[0036] A production method of high-pressure hydrolysis of fats and oils using sweet water:

[0037] The palm oil from the external storage tank is pressurized by the grease high-pressure pump 6 and then enters the hydrolysis tower 4 at a rate of 10 tons / hour. The process water 21 is pressurized by the process water high-pressure pump 22 and then enters the hydrolysis tower at a flow rate of 6.2 tons / hour. The 6.0MPa high-pressure steam 1 enters the hydrolysis tower at a rate of 1.3 tons / hour. The palm oil and process water undergo a hydrolysis reaction at a temperature of 260°C and a pressure of 6.0MPa to produce 9.85 tons of fatty acids and 7.65 tons of sweet water ( The concentration is 14.3%); the fatty acid 9 produced by the hydrolysis reaction is discharged from the top of the hydrolysis tower 4 and exchanges heat with the process water 21, and the sweet water 10 produced by the hydrolysis reaction is discharged from the bottom of the hydrolysis tower and ex...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a grease high-pressure hydrolysis production method and a production device by recycling sweet water, and aims to provide the method and the device to effectively reduce waste water discharge. The technical scheme is characterized in that the grease high-pressure hydrolysis production method by recycling the sweet water comprises the following steps that (1) process water and grease countercurrent meet in a hydrolysis tower; (2) fatty acid and glycerin are generated; (3) the fatty acid with small density is discharged from the top part of the hydrolysis tower, and the sweet water with large density is discharged from the bottom part of the hydrolysis tower; (4) crude glycerin is obtained, and steam becomes evaporator condensate; (5) the evaporator condensate is recycled to replenish the process water. The grease high-pressure hydrolysis production device by recycling the sweet water comprises the hydrolysis tower and a triple effect evaporator, wherein a grease inlet, a high pressure steam inlet and a process water inlet are respectively formed in the hydrolysis tower; a condenser and a condensate water collecting tank are sequentially connected between a steam outlet of the triple effect evaporator and the process water inlet of the hydrolysis tower; the triple effect evaporator is also provided with a discharge hole for discharging the crude glycerin.

Description

technical field [0001] The invention relates to the field of oil chemical production, in particular to a production method and a production device for high-pressure hydrolysis of oil by recycling sweet water to evaporate condensed water. Background technique [0002] In the field of oleochemical production, most domestic manufacturers currently use high-pressure hydrolysis of oil to produce fatty acids and glycerin. Oil and deionized water undergo countercurrent high-temperature and high-pressure hydrolysis in a hydrolysis tower to generate fatty acids and glycerin. According to statistics, there are many sets of hydrolysis devices in operation in my country, with an annual output of more than 1 million tons, and a large amount of low-concentration crude sweet water is also produced. Due to the low initial concentration of crude sweet water, generally 12% to 25%, After three-effect or four-effect evaporation and concentration to 75% or more, it enters the distillation tower f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C11C1/04B01D17/02
Inventor 王文德王晓辉蒋海刚葛赞秦志荣
Owner HANGZHOU OIL & FAT CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap