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A method and device for forming a solid silicon-aluminum-phosphorus molecular sieve

A silicon-alumino-phosphorus molecular sieve and silicon-alumino-phosphorus technology, which is used in molecular sieve catalysts, molecular sieves and alkali-exchanged phosphates, molecular sieve-specific silico-aluminophosphates, etc. , Improve the wear strength, the effect of uniform stirring

Active Publication Date: 2020-12-15
CHINA TIANCHEN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose a solid silicon aluminum phosphorus molecular sieve molding method and device to solve the problem of molecular sieve hollowing, as well as the problem of unsmooth feeding and blockage

Method used

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  • A method and device for forming a solid silicon-aluminum-phosphorus molecular sieve
  • A method and device for forming a solid silicon-aluminum-phosphorus molecular sieve
  • A method and device for forming a solid silicon-aluminum-phosphorus molecular sieve

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Experimental program
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Effect test

Embodiment 1

[0060] A solid silicon aluminum phosphorus molecular sieve forming device, comprising a batching kettle 1 and a pusher 2;

[0061] The top of the batching kettle 1 is provided with a feed inlet 8, and the bottom is provided with a discharge outlet, and the feed inlet 8 is provided with a sealing cover 9, and the sealing cover 9 can be threadedly connected with the feeding inlet 8; the batching kettle 1 is also connected with Vacuum pump 10, the batching kettle 1 is also provided with a pressure gauge for detecting the pressure; the inside of the batching kettle 1 is provided with an agitator, and the agitator includes a rotating shaft 4 that is vertically arranged on the inside of the batching kettle 1 and is arranged on the rotating shaft 4 The stirring blade and the scraping frame 7 on the top, the scraping frame 7 is in the shape of a mouth, and the side of the scraping frame 7 is attached to the inner wall of the batching kettle 1, and the scraping frame 7 is made of 304 st...

Embodiment 2

[0071] On the basis of the above embodiments, for example, the stirring blades include first stirring blades 5 and second stirring blades 6 arranged alternately from top to bottom; the first stirring blades 5 are in a spiral structure; the second stirring blades The two stirring blades 6 are sheet-like structures and are arranged obliquely relative to the horizontal plane.

[0072] Specifically, the first stirring blades 5 are in 2 groups, each group has 2 and are arranged symmetrically, the second stirring blades 6 are in 3 groups, each group has 2 and are symmetrically arranged, and the first stirring blades 5 and the second stirring blades 6 intervals are set; the distance between the stirring blade at the bottom of the rotating shaft 4 and the bottom of the batching kettle 1 is 0.2-0.5m, and the stirring blade is made of 304 stainless steel or above.

[0073] Wherein, the second stirring blade 6 of sheet-like structure provides conventional stirring mode, and the first sti...

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Abstract

The invention provides a solid silicon aluminum phosphorus molecular sieve forming method and a device. The device comprises a batching kettle and a pusher; the batching kettle is further connected with a vacuum pump; a stirrer is arranged in the batching kettle; the stirrer comprises a rotating shaft vertically arranged in the batching kettle and stirring vanes and a scraper frame arranged on therotating shaft. The side edge of the scraper frame fits with the inner wall of the batching kettle. The pusher is arranged at the discharge port of the batching kettle and is used for pushing materials and converting vertical discharging into horizontal discharging. By the use of the device, materials can be mixed more uniformly, and fewer bubbles are mixed into the slurry. The problem of hollowing after molding of silicon aluminum phosphorus molecules is solved, and the problem that materials are pasted on the kettle wall and pipelines are blocked is effectively alleviated.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a method and device for forming a solid silicon-aluminum-phosphorus molecular sieve. Background technique [0002] Propylene is currently the most important bulk chemical product in the world and one of the basic chemical raw materials supporting my country's economic development. It can be used to prepare a variety of basic organic raw materials. For example, propylene oxide, acrolein, propenyl alcohol, isopropanol, carbon tetrachloride, butanol and the like can be prepared. In recent years, due to the demand for downstream derivatives (especially polypropylene), the demand for propylene has increased significantly. Due to the shortage of domestic propylene resources, it is far from meeting the needs of the domestic market, and the domestic self-sufficiency rate has dropped sharply, requiring a large amount of imports. With the environment of fierce competition in the inter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/54C01B37/08B01J29/85
CPCB01J29/85C01B37/08C01B39/54
Inventor 刘俊生李欢宗婉君王海国王元平张洪江刘明勤
Owner CHINA TIANCHEN ENG
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