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

Reaction distillation method

A technology of reactive distillation and reaction section, which is applied in the direction of distillation separation, separation method, chemical instrument and method, etc., and can solve the problems of complex process and high energy consumption

Active Publication Date: 2013-12-25
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the current reactive distillation process needs two towers to realize the reactive distillation tower and the product separation tower, and there are problems of complicated process and high energy consumption. A new method of reactive distillation is provided, which has the advantages of simple process and low energy consumption

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
  • Reaction distillation method
  • Reaction distillation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] according to figure 1 In the epichlorohydrin production process shown, the number of theoretical plates in the public rectification section is 5, the number of theoretical plates in the common stripping section is 10, the separation efficiency of the reaction section is equivalent to 25 theoretical plates, and the number of theoretical plates in the rectification section on the production side is for 25. The catalyst loaded in the reaction section is SiO 2 / TiO 2 The titanium-silicon molecular sieve with a molar ratio of 80, 30% by weight of hydrogen peroxide and methanol mixture (70% by weight of methanol content) enters the first theoretical plate of the reaction section with a flow rate of 1.00 g / min (numbered from top to bottom, the same below), Allyl chloride enters from the bottom of the reaction section with a flow rate of 2.00 g / min, and the top of the tower is fully refluxed. The side line is extracted from the 10th theoretical plate of the separation sectio...

Embodiment 2

[0019] according to figure 2 The reaction distillation separation tower shown is equipped with trays, the number of theoretical plates in the public rectification section is 5, the number of theoretical plates in the common stripping section is 10, the separation efficiency of the catalytic reaction section is equivalent to the number of theoretical plates is 15, and the number of theoretical plates in the recovery side is The number of theoretical plates in the distillation section is 15, the number of theoretical plates in the rectification section on the feed side is 4, and the number of theoretical plates in the rectification section on the feed side is 6. The catalyst is SiO 2 / TiO 2 Titanium-silicon molecular sieve with a molar ratio of 80, 30% by weight hydrogen peroxide and methanol mixture (methanol content 70% by weight) enters the first theoretical plate of the reaction section with a flow rate of 1.00 g / min (numbered from top to bottom, the same below), allyl chlo...

Embodiment 3

[0021] according to figure 1 The reactive distillation separation tower shown is equipped with packing in the tower, the number of theoretical plates in the public rectification section is 25, the number of theoretical plates in the common stripping section is 30, the separation efficiency of the catalytic reaction section is equivalent to the number of theoretical plates in the 30, and the rectification on the production side The number of theoretical plates in the section is 45, the number of theoretical plates in the rectification section on the feed side is 15, and the number of theoretical plates in the rectification section on the feed side is 15. The catalyst is SiO 2 / TiO 2 Titanium-silicon molecular sieve with a molar ratio of 80, 30% by weight hydrogen peroxide and methanol mixture (methanol content 70% by weight) enters the first theoretical plate of the reaction section with a flow rate of 1.00 g / min (numbered from top to bottom, the same below), allyl chloride ...

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 reaction distillation method, which mainly solves problems of a complex process and high energy consumption which are caused by a situation that a reaction distillation tower and a product separation tower are needed in current reaction distillation technologies. According to the present invention, reaction raw materials enter a reaction distillation separation tower from raw material feed inlets of a reaction section of the reaction distillation separation tower, component separation is carried out when the reaction is carried out, light components are produced from a tower top, middle distillates are produced from a side line, and heavy components are produced from a tower bottom. The reaction distillation separation tower comprises a reaction distillation separation tower body, a tower top condenser and a tower bottom reboiler. The reaction distillation separation tower body comprises the raw material feed inlets, a tower top feed inlet, a tower top discharge hole, a tower bottom feed inlet, a tower bottom discharge hole, a side line discharge hole, a division plate, a common rectifying section, the reaction section, a side rectifying section and a common stripping section. The technical scheme that the feed side can be provided with the rectifying section and / or the stripping section allows the problems to be well solved, so the scheme can be used in the industrial application of reaction distillation.

Description

technical field [0001] The invention relates to a method for reactive distillation. Background technique [0002] Catalytic distillation technology is that the separation of reaction and product is carried out in the same catalytic distillation equipment, and the generated product is separated while the reaction is in progress, and the balance of the reaction is broken, so that the reaction tends to be complete and the conversion rate of the reactant is improved; in addition, the reaction The heat can be absorbed by the vaporization of the reaction materials, so the reaction temperature can be kept constant, the energy consumption can be greatly reduced, the process flow is simplified, and the investment is also greatly reduced. The catalytic distillation column generally consists of three sections: the upper part is the rectification section (the rectification section may not be provided when the quality requirements for the top product are not high or not required), the mi...

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): B01D3/00B01J8/02
Inventor 钟禄平肖剑
Owner CHINA PETROLEUM & CHEM CORP