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

Molecular sieve special for acetylene gas and preparation method thereof

A molecular sieve and gas technology, applied in the field of molecular sieve, can solve problems such as affecting the normal operation of collective transportation production, blocking pipelines, equipment, and equipment pipeline corrosion, and achieves the effect of improving dehydration efficiency, reducing energy consumption and improving bonding performance.

Active Publication Date: 2019-11-26
江西鑫淘科技股份有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Acetylene is one of the important chemical raw materials, and it is of great significance to study the adsorption and activation of it; the production process of acetylene gas inevitably has liquid phase water, and the existence of liquid phase water will form hydrate under certain conditions. , block pipelines and equipment, and affect the normal operation of collective transportation and production; in addition, acetylene gas may contain acid gases such as carbon dioxide and hydrogen sulfide, and the existence of liquid phase water will cause corrosion of equipment and pipelines, which will cause serious leakage in the long run , leading to a very large safety hazard, so acetylene water storage becomes a very critical step
[0003] At present, the adsorption method is mainly used for dehydration, and the adsorbents mainly include molecular sieves, activated alumina, silica gel, etc.; however, after dehydration of these traditional adsorbents, a large amount of heat needs to be consumed during regeneration, and the adsorption rate is low, so it is difficult to realize the dehydration of acetylene. The moisture in the gas is fully adsorbed, but there is still a high water content (after adsorption, there is still a water content of more than 5ppm), and the adsorption is not thorough; moreover, the above-mentioned adsorbents also have the problems of low strength, severe wear and tear or broken after repeated use

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Steps include:

[0022] (1) Take each raw material according to the formula ratio, and then mix each raw material evenly;

[0023] (2) Transfer the homogeneously mixed raw materials to a hydrothermal synthesis kettle, and seal it; continue heating at 170° C. for 2 hours to crystallize the mixture;

[0024] (3) The solid product in the hydrothermal synthesis kettle is filtered, washed until neutral, and dried; then roasted at 600° C. for 3 hours to form a molecular sieve specially used for acetylene gas, and the particle size of the molecular sieve is 3-5 mm.

[0025] The raw material formula is: 70 parts of molecular sieve powder (3A molecular sieve powder), 10 parts of attapulgite, 18 parts of clay, 1 part of bayberry extract (larch extract), and 1 part of resin (phenolic resin).

[0026] Performance measurement: particle size 5mm, strength 220N, water absorption rate 23%, acetylene water content after adsorption of acetylene is less than 1ppm; shelf life is 3 years. ...

Embodiment 2

[0028] Raw material formula: 65 parts of molecular sieve raw powder (4A molecular sieve raw powder), attapulgite (also known as Palygorskite or palygorskite), is a kind of hydrous magnesium-rich silicate clay mineral with chain layer structure ) 12 parts, clay 20 parts, bayberry extract 1.5 parts, resin (anion exchange resin) 1.5 parts. The preparation steps are the same as in Example 1. Performance measurement: particle size 4mm, strength 200N, water absorption rate 22%, acetylene water content after adsorption of acetylene is less than 1ppm; shelf life is 3 years.

Embodiment 3

[0030] Raw material formula: 75 parts of molecular sieve raw powder (3A molecular sieve raw powder), 8 parts of attapulgite, 15 parts of foreign crucible, 0.5 part of waxberry extract, and 1.5 parts of resin (high-density polyethylene resin). The preparation steps are the same as in Example 1. Performance measurement: particle size 3mm, strength 202N, water absorption rate 22.5%, water content of acetylene after adsorption of acetylene is less than 1ppm; shelf life is 3 years.

[0031] It can be known from the above examples that the molecular sieve of the present invention has the advantages of high water absorption, strong strength, not easy to wear and tear, and long shelf life.

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 diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a special molecular sieve for acetylene gas and a preparation method of the special molecular sieve. The special molecular sieve is characterized in that the molecular sieve is prepared from, by weight, 50-90 parts of molecular sieve raw powder, 2-15 parts of attapulgite, 8-30 parts of crucible soil, 0.5-2 parts of tanning agent myrica and 0.5-2 parts of resin; the particle diameter of the molecular sieve ranges from 3 mm to 5 mm. The tanning agent myrica is applied to the molecular sieve for the first time, the full adhesive effect is achieved, full mixing and contact of all the raw materials are guaranteed, the contact area is increased, the adhesive performance is improved, and therefore it is guaranteed that the strength of finished products is greatly improved; in addition, the high water absorption can be achieved by means of addition of the tanning agent myrica, the water absorption of the molecular sieve is increased accordingly, it is guaranteed that moisture can be fully removed through drying and absorbed when the molecular sieve is applied to the acetylene gas to absorb moisture, and pipeline equipment is not blocked or corroded.

Description

technical field [0001] The invention relates to the technical field of molecular sieves, in particular to a special molecular sieve for acetylene gas and a preparation method thereof. Background technique [0002] Acetylene is one of the important chemical raw materials, and it is of great significance to study the adsorption and activation of it; the production process of acetylene gas inevitably has liquid phase water, and the existence of liquid phase water will form hydrate under certain conditions. , block pipelines and equipment, and affect the normal operation of collective transportation and production; in addition, acetylene gas may contain acid gases such as carbon dioxide and hydrogen sulfide, and the existence of liquid phase water will cause corrosion of equipment and pipelines, which will cause serious leakage in the long run , leading to a very large safety hazard, so acetylene water storage becomes a very critical step. [0003] At present, the adsorption me...

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): C01B39/14B01J20/18
Inventor 刘建斌
Owner 江西鑫淘科技股份有限公司