Unlock instant, AI-driven research and patent intelligence for your innovation.

Device and method for catalyzing tail chlorine dehydrogenation and preparing ferric chloride using iron oxide in chlor-alkali industry

A technology of iron oxide catalytic tail and chlor-alkali industry, applied in the direction of iron halide, etc., can solve the problems of complex process and high operating cost, and achieve the effect of improving stability and improving industrial efficiency.

Active Publication Date: 2018-10-23
TAIYUAN UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the tail chlorine dehydrogenation scheme reported in the existing literature, the catalyst must be reduced before it can be reused, which makes the process complicated and the operation cost high

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
  • Device and method for catalyzing tail chlorine dehydrogenation and preparing ferric chloride using iron oxide in chlor-alkali industry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The components of industrial tail chlorine are: H2, 3.97%; Cl2, 72.85%; O2, 9.93%; N2, 13.25%.

[0049] Iron oxide powder is used as catalyst. The catalyst packing height is 0.35m, the reaction temperature is 70°C, and the apparent operating gas velocity Uf=0.3m / s. When the tail chlorine is dehydrogenated under this condition, the hydrogen conversion rate can reach 75.56%, and the ferric chloride concentration is 42%. The residence time of the catalyst in the reaction fluidized bed was 4h.

Embodiment 2

[0051] The components of industrial tail chlorine are: H2, 3.05%; Cl2, 72.36%; O2, 10.31%; N2, 14.25%.

[0052] Iron oxide particles are used as catalysts. The catalyst packing height is 0.45m, the reaction temperature is 130°C, and the apparent operating gas velocity Uf=0.35m / s. When the tail chlorine is dehydrogenated under this condition, the hydrogen conversion rate can reach 81.76%, and the ferric chloride concentration is 42%. The residence time of the catalyst in the reaction fluidized bed is 4.5h.

Embodiment 3

[0054] The components of industrial tail chlorine are: H2, 3.97%; Cl2, 72.85%; O2, 9.93%; N2, 13.25%.

[0055] Alumina-supported iron oxide is used as catalyst. The catalyst packing height is 0.45m, the iron oxide loading is 5%, the reaction temperature is 130°C, and the apparent operating gas velocity Uf=0.35m / s. When the tail chlorine is dehydrogenated under this condition, the hydrogen conversion rate can reach 87.33%, and the ferric chloride concentration is 41%. The residence time of the catalyst in the reaction fluidized bed is 4.5h.

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 discloses a device and a method for dehydrogenation by catalyzing tail chlorine through ferric oxide and preparation of ferric chloride in the chloro-alkaline industry. The device comprises a tail chlorine dehydrogenation reaction device and a ferric chloride preparation device. According to the device, the ferric oxide or supported ferric oxide (aluminum oxide, silicon dioxide and the like are used as a carrier) is used as a catalyst; a fluidized bed reactor is adopted to carry out tail chlorine dehydrogenation reaction; an inactivated catalyst reacts with exhaust gas of the dehydrogenized tail chlorine, thus preparing the ferric chloride. The device for dehydrogenation of the industrial tail chlorine under a low-temperature condition can realize continuous production, and meets a requirement for tail chlorine catalysis dehydrogenation in the industrial production; furthermore, during the dehydrogenation of the tail chlorine, the ferric chloride with an industrial value is prepared, so that the economical value of utilization of the tail chlorine is increased.

Description

technical field [0001] The invention relates to a device and method for using iron oxide to catalyze tail chlorine dehydrogenation and preparing ferric chloride in the chlor-alkali industry, belonging to the technical field of tail chlorine catalytic dehydrogenation in the chlor-alkali industry. Background technique [0002] The tail chlorine in the chlor-alkali industry is mainly composed of chlorine, including oxygen, nitrogen and hydrogen, among which the content of chlorine is 65-85%, nitrogen is 10-15%, oxygen is 5-10%, and hydrogen is 1.5-4 %, since the explosion limit of hydrogen is 4%, the existence of hydrogen has become the biggest safety hazard in the tail gas. The traditional chlor-alkali industry usually burns hydrogen and chlorine into hydrochloric acid at high temperature to remove the hydrogen in the tail gas, but this method The chlorine gas in the tail chlorine has not been widely used, and the industrial benefit is low. [0003] Using a catalyst to remove...

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 Patents(China)
IPC IPC(8): C01G49/10
CPCC01G49/10
Inventor 薛建伟陈小圈薛达刘记生王寒寒刘茜李福祥吕志平
Owner TAIYUAN UNIV OF TECH