Ethanol dehydration technique adopting molecular sieve catalyst

An ethanol dehydration and molecular sieve technology, applied in the chemical industry, can solve the problems of not meeting the requirements of the processing technology, low ethylene purity, and high reaction temperature, and achieve the effects of avoiding scale formation, low freezing point, and low reaction temperature.
CN101219920AInactive Publication Date: 2008-07-16NANJING UNIV OF TECH
0 Cites 9 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF TECH
Publication Date
2008-07-16
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a high-efficiency ethanol dehydration process by using a molecular sieve catalyst; ethanol is taken as raw material and the modified molecular sieve as the catalyst to prepare ethylene through dehydration reaction; the invention comprises the specific steps that two or above two multitubular packed-bed reactors are serially connected and the catalyst is put into the reactors; the ethanol which passes through the reactor in a liquid hourly space velocity of 0.4 to 4.5 h <MINUS 1> is converted to the ethylene under a temperature ranging from 150 DEG C to 400 DEG C. The invention can effectively improve yield of the ethylene and conversion rate of the raw material; the invention has the advantages of energy saving, flexible reaction condition, high application efficiency of the catalyst, high reaction activity, long service life, high strength, low reaction temperature and great industrialization application value.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method for preparing ethylene by dehydrating ethanol in a tubular fixed-bed reactor by using a modified molecular sieve catalyst. Background technique

[0002] Ethylene is an important basic organic chemical raw material. The scale and level of the ethylene industry is an important symbol of the development level of a country's chemical industry. As an important chemical raw material, ethylene has important applications in many aspects. In industry, it is mainly used to synthesize the following substances: polyethylene, ethylbenzene, ethylene oxide, dichloroethane, oligomers, etc. In addition, ethylene also has important applications in medicine and agriculture. With the continuous development of my country's economy, my country has become a country with a large demand for energy and resources. In particular, the demand for ethylene in my country is growi...

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