Desulfurizer and preparation method thereof

A desulfurizer and adhesive technology, applied in chemical instruments and methods, other chemical processes, organic chemistry, etc., can solve the problems of low sulfur capacity and difficult preparation of desulfurizers

Active Publication Date: 2012-03-21
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although the desulfurizing agent in this patent application has a significantly improved ability to remove hydrogen sulfide compared with amine liquid, the sulfur capacity of the desulfurizing agent is still not high. Therefore, the desulfurizing agent is used to prepare organic compounds such as propylene from liquid hydrocarbons. It is still difficult to produce high-purity propylene and other organic compound products in the process of product

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  • Desulfurizer and preparation method thereof

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preparation example Construction

[0012] The present invention also provides a method for preparing a desulfurizer, the method comprising molding and activating a raw material mixture containing zinc oxide, sodium carbonate and a binder.

[0013] In a preferred embodiment, in order to further increase the sulfur capacity of the prepared desulfurizer, zinc carbonate is added to the raw material mixture. The zinc carbonate can expand pores, so that the finally prepared desulfurizer has increased pore volume and pore diameter, thereby increasing the sulfur capacity of the desulfurizer.

[0014] In the process of preparing the desulfurizer, the addition amount of the zinc carbonate is not particularly limited, however, in order to significantly improve the sulfur capacity of the final prepared desulfurizer, relative to 100 parts by weight of the raw material mixture, the zinc carbonate The amount of zinc added is preferably 1-15 parts by weight, more preferably 3-12 parts by weight.

[0015] In the process of pre...

Embodiment 1

[0019] This example is used to illustrate the desulfurizing agent provided by the present invention and its preparation method.

[0020] Mix 67 parts by weight of zinc oxide, 11 parts by weight of sodium carbonate, 11 parts by weight of zinc carbonate, 11 parts by weight of sodium metaaluminate and an appropriate amount of water to make a mixed slurry, and then extrude it with a twin-screw extruder It was molded and dried at 120°C, then activated at 380°C for 2 hours under the protection of nitrogen, and then cooled to room temperature to obtain desulfurizer A1.

Embodiment 2

[0022] This example is used to illustrate the desulfurizing agent provided by the present invention and its preparation method.

[0023] The zinc oxide of 65 parts by weight, the sodium carbonate of 14 parts by weight, the zinc carbonate of 7 parts by weight, the kaolin of 14 parts by weight and an appropriate amount of water are mixed to make a mixed slurry, and then extruded with a twin-screw extruder, and dried at 120°C, then activated at 450°C for 1.5 hours under the protection of nitrogen, and then cooled to room temperature to obtain desulfurizer A2.

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Abstract

The invention provides a desulfurizer, wherein the desulfurizer comprises zinc oxide, sodium carbonate and an adhesive. The invention also provides a preparation method of the desulfurizer; the method comprises forming and activation of a raw material mixture; and the raw material mixture comprises zinc oxide, sodium carbonate and an adhesive. During purification of a propylene crude product, sulfur-containing compounds can be fully removed by using the desulfurizer provided by the invention, and thus a high-purity propylene product with very low sulfur content can prepared.

Description

technical field [0001] The invention relates to a desulfurizing agent and a preparation method of the desulfurizing agent. Background technique [0002] Generally, liquid hydrocarbons produced in the refining and chemical industry (such as atmospheric and vacuum distillation process, catalytic cracking process, heavy oil catalytic cracking process or delayed coking process) contain mercaptans, carbonyl sulfide (COS), H 2 S and CS 2 These sulfur-containing compounds will be incorporated into the organic compound products such as propylene, propane or ethane prepared from the liquid hydrocarbons, thereby reducing the quality of the prepared organic compound products. Therefore, in the process of using the liquid hydrocarbons to prepare organic compound products, these sulfur-containing compounds need to be removed to improve the purity of the prepared organic compound products. However, in the actual production process, H 2 S will react with olefins to generate sulfides tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/30C07C11/06C07C7/12
Inventor 陈世华马坚丁云龙
Owner CHINA PETROLEUM & CHEM CORP
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