Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for producing aluminium trichloride by carbochlorination

An aluminum trichloride, carbonaceous technology, applied in aluminum chloride, aluminum halide and other directions, can solve the problems of high economic cost, high technical difficulty, influence of reaction in the furnace, etc., and achieve the effect of low production cost and cost reduction

Inactive Publication Date: 2019-01-18
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the technology of alumina chlorination to produce aluminum trichloride is in its infancy, and the main technical problems are that the reaction of the chlorination furnace cannot be self-heated, and an external stable heat source is required; chlorine gas needs to be preheated to above 800°C, which is technically difficult and The economic cost is high; the moisture contained in the reactant enters the chlorination furnace, which affects the reaction in the furnace, and the whole production is difficult

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
  • Method for producing aluminium trichloride by carbochlorination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Mix 100 parts by weight of bauxite and 50 parts by weight of carbonaceous reducing agent as mixed raw materials, and add them to a roasting furnace; wherein the particle size of bauxite is 100-240 mesh; the particle size of carbonaceous reducing agent is 100-160 mesh.

[0027] 2) Air is introduced into the roasting furnace, and the gas velocity is controlled at 0.1m / s. The average residence time of the mixed raw materials in the roasting furnace is 60 minutes. The hot roasting material is continuously introduced into the chlorination furnace, and the smoke from the roasting furnace enters the tail gas system after treatment. emission;

[0028] 3) Chlorine gas is introduced into the chlorination furnace, the operating gas velocity is controlled at 0.2m / s, and the fluidized chlorination contact reaction is carried out with the hot roasting material. The chlorination reaction temperature is controlled at 1200°C, and the average residence time of solid materials is 3h. A...

Embodiment 2

[0030] 1) Mix 100 parts by weight of bauxite and 50 parts by weight of carbonaceous reducing agent as mixed raw materials, and add them to a roasting furnace; wherein the particle size of bauxite is 100-240 mesh; the particle size of carbonaceous reducing agent is 100-160 mesh.

[0031] 2) Air is introduced into the roasting furnace, and the gas velocity is controlled at 0.1m / s. The average residence time of the mixed raw materials in the roasting furnace is 60 minutes. The hot roasting material is continuously introduced into the chlorination furnace, and the smoke from the roasting furnace enters the tail gas system after treatment. emission;

[0032] 3) Carbon tetrachloride gas is passed into the chlorination furnace, the operating gas velocity is controlled at 0.2m / s, and the fluidized chlorination contact reaction is carried out with the hot roasting material. The chlorination reaction temperature is controlled at 1200°C, and the average solid material The residence time ...

Embodiment 3

[0034] 1) Mix 100 parts by weight of bauxite and 45 parts by weight of carbonaceous reducing agent as mixed raw materials, and add them to a roasting furnace; wherein the particle size of bauxite is 160-400 mesh; the particle size of carbonaceous reducing agent is 100-200 mesh.

[0035] 2) Air is introduced into the roasting furnace, and the gas velocity is controlled at 0.1m / s. The average residence time of the mixed raw materials in the roasting furnace is 30 minutes. The hot roasting material is continuously introduced into the chlorination furnace, and the smoke from the roasting furnace enters the tail gas system after treatment. emission;

[0036] 3) Chlorine gas is introduced into the chlorination furnace, the operating gas velocity is controlled at 0.15m / s, and the fluidized chlorination contact reaction is carried out with the hot roasting material. The chlorination reaction temperature is controlled to be 1200°C, and the average residence time of solid materials is 4h...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of fluidization, and particularly relates to a method for producing aluminium trichloride by carbochlorination. Aiming at solving the technical problem, the invention provides the method for producing aluminium trichloride by carbochlorination, which comprises the following steps: (a) roasting: after 100 parts by weight of bauxite and 30 to 55 parts byweight of carbonaceous reducing agent are mixed, air or oxygen-rich air is injected to carry out roasting, and the roasting temperature is controlled at 800 DEG C to 1,000 DEG C; (b) chlorination: chlorine or carbon tetrachloride is injected into the hot-state roasted material obtained after roasting in step (a) to carry out chlorination, the chlorination temperature is controlled at 1,050 DEG C to 1,300 DEG C, and thereby a reaction product containing aluminium trichloride is obtained. The method disclosed by the invention has lower cost.

Description

technical field [0001] The invention belongs to the technical field of fluidization, and specifically relates to a method for producing aluminum trichloride by adding carbon and chlorination, and is especially suitable for industrially performing gas-solid fluidized bed roasting and boiling chlorination of bauxite to produce aluminum trichloride Methods. Background technique [0002] At present, the technology of alumina chlorination to produce aluminum trichloride is in its infancy, and the main technical problems are that the reaction of the chlorination furnace cannot be self-heated, and an external stable heat source is required; chlorine gas needs to be preheated to above 800°C, which is technically difficult and The economic cost is high; the moisture contained in the reactants enters the chlorination furnace, which affects the reaction in the furnace, making it difficult for the entire production to proceed smoothly. Contents of the invention [0003] The technical...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/56
CPCC01F7/56
Inventor 王建鑫尹国亮陆平杨仰军
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com