High-efficiency hydrogenation device and dinitrotoluene hydrogenating method

A technology for hydrogenation reaction and hydrogenation reactor, which is applied in chemical instruments and methods, preparation of amino compounds, preparation of organic compounds, etc., can solve the problems of excessively large stirring motor of the reactor, reducing the reaction volume, frequent mechanical failures, etc. , to achieve the effect of compact structure, reducing reaction volume and small thermal resistance of dirt

Active Publication Date: 2011-08-17
甘肃银光聚银化工有限公司 +1
View PDF13 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The DNT hydrogenation reaction rate is greatly affected by the DNT concentration. It is a 0-order reaction in the high-concentration area (≥600PPm), and a 1-order reaction in the low-concentration area (≤600PPm). According to the principle of reaction kinetics, the two-stage series can be greatly improved. The reaction driving force of the reactor is improved, the re

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
  • High-efficiency hydrogenation device and dinitrotoluene hydrogenating method
  • High-efficiency hydrogenation device and dinitrotoluene hydrogenating method
  • High-efficiency hydrogenation device and dinitrotoluene hydrogenating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The following examples serve to further illustrate the method of the present invention. The spirit and scope of the present invention disclosed above are not limited by these examples. Those skilled in the art will readily appreciate that known variations can be made using the conditions of the following methods.

[0047] preferred embodiment

[0048] Hydrogenation reactor:

[0049]①Body: Due to high-pressure equipment, an elliptical head is selected, with a diameter of φ2400mm, a barrel height of 3700mm, a head height of 600mm, a total equipment height of 4900mm, a straight edge height of 50mm, and a head volume of 2.05m 3 , with a height of 4.20mm and a total volume of 18.32m 3 , the effective volume is 14.879m 3 . Shaft sleeve 220mm×4mm, shaft φ110mm / φ60mm, cooling water main inlet pipe φ210mm×5mm, 4 pieces. The lower manhole is φ750mm, and the discharge pipe is φ230mm×40mm.

[0050] ②Plate cooler: curved plate, width 940mm, height 2500mm, thickness 14mm, arc ...

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 high-efficiency hydrogenation device and a dinitrotoluene hydrogenating method. Three hydrogenation reactors are connected in parallel and are all connected with a hydrogenation aging machine in series; the bottom part of an inclined grid plate separator (7) is connected with the bottom parts of the three hydrogenation reactors in parallel, and the top part of the inclined grid plate separator (7) is connected with a steam-liquid separator tank which is connected with inclined grid plate separators (8) and (9) in parallel; the top parts of the inclined grid plate separators are connected with a tolylenediamine finished product tank in parallel, and the bottom parts of the inclined grid plate separators are connected with a catalyst recovery tank in parallel; andthe bottom part of the catalyst recovery tank is connected with the top parts of the three hydrogenation reactors in parallel through a diaphragm pump. In the invention, the size of the hydrogenationreactors are reduced considerably, the power of a stirring motor is lowered, and the energy conservation and consumption reduction of the device are realized.

Description

technical field [0001] The invention relates to an efficient hydrogenation reaction device and a dinitrotoluene hydrogenation method. Background technique [0002] Hydrogenation reaction is an important step in the three core reactions of nitration, hydrogenation and photochemical production in TDI production, and is one of the key technologies in TDI production. Hydrogenation reactor is the core production equipment of hydrogenation reaction, and its technological advancement directly affects TDI The level of production cost and the process stability of the whole production line. [0003] The hydrogenation reaction equation of dinitrotoluene hydrogenation to generate toluenediamine is as follows: [0004] [0005] The hydrogenation reaction is a reaction with a large heat release, and the reaction heat must be transferred in time, so there is a cooler with a large heat transfer surface in the reactor. This reaction is a gas-liquid-solid three-phase reaction, and strong...

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): B01J8/10C07C211/51C07C209/36
Inventor 尹世英汤汉球李晓明沈精平强光明梁文贵马玉靖
Owner 甘肃银光聚银化工有限公司
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