Desulfurization adsorbent as well as preparation method and application thereof

An adsorbent and mercaptan removal technology, which is applied in ether preparation, chemical instruments and methods, and other chemical processes, can solve problems such as low efficiency, high cost, and difficulty in reducing total sulfide content, achieving mild reaction, low cost, and powerful effect

Pending Publication Date: 2022-02-25
DALIAN JIACHUN GAS PURIFICATION TECH DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to one aspect of the present invention, a loaded cadmium-based composite metal oxide is provided, which can be used as an adsorbent for demercaptanization of methyl tert-butyl ether to overcome the existing methyl tert-butyl ether Butyl ether has technical defects such as low mercaptan removal efficiency, high cost, and difficulty in reducing total sulfide content

Method used

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  • Desulfurization adsorbent as well as preparation method and application thereof
  • Desulfurization adsorbent as well as preparation method and application thereof
  • Desulfurization adsorbent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Preparation of supported cadmium oxide desulfurizer

[0095] Add 0.5g of silica gel to the mortar, followed by 0.1235g of 3CdSO 4 ·8H 2 O was thoroughly mixed and ground for 40 minutes, and the obtained mixture was dried at 110° C. for 4 hours, and raised to 450° C. in a muffle furnace at a heating rate of 2° C. / min and calcined for 5 hours to obtain a 11% CdO / silica gel desulfurizer. The mass ratio of cadmium oxide to carrier in the desulfurizer is 11:89.

Embodiment 2

[0099] Preparation of supported cadmium oxide / copper oxide desulfurizer

[0100] Add 0.62g of silica gel to the mortar, followed by 0.1841g of Cd(NO 3 ) 2 4H 2 O was thoroughly mixed and ground for 20 min, and the resulting mixture was dried at 80 °C for 3 hours, and then heated to 400 °C in a muffle furnace at a rate of 1 °C / min and calcined for 4 hours to obtain 0.6966 g of CdO / silica gel desulfurizer. Afterwards, it was dispersed in 30 mL deionized water, and 0.1114 g Cu(NO 3 ) 2 ·3H 2 O, followed by adding 1 wt% ammonia solution to pH 8, stirred at 40°C for 200 minutes, vacuum filtered, dried at 90°C for 3 hours, and raised to 400°C in a muffle furnace at a rate of 1°C / min ℃ and calcined for 4 hours to obtain 11%CdO-5%CuO / silica gel desulfurizer, the mass ratio of cadmium oxide, copper oxide and carrier in the desulfurizer is 11:5:84.

Embodiment 3

[0102] Compared with Example 2, the difference is that the addition of silica gel is 0.0738g, Cd(NO 3 ) 2 4H 2 The amount of O added is 0.8368g, Cu(NO 3 ) 2 ·3H 2 The amount of O added was 0.8912g, other preparation and reaction conditions were exactly the same as in Example 2, and the obtained material was 50%CdO-40%CuO / silica gel desulfurizer.

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Abstract

The invention discloses a desulfurization adsorbent as well as a preparation method and an application thereof, and belongs to the technical field of methyl tert-butyl ether desulfurization. The desulfurization adsorbent comprises a supported cadmium-based compound, the supported cadmium-based compound comprises an active component and a carrier, and the active component is supported on the carrier; the active component comprises an active component I, and the active component I is cadmium oxide. The supported cadmium-based composite metal oxide can be used as an adsorbent for methyl tert-butyl ether mercaptan removal to overcome the technical defects of low mercaptan removal efficiency, high cost, difficulty in reduction of total sulfide content and the like in the existing methyl tert-butyl ether mercaptan removal.

Description

technical field [0001] The application relates to the field of methyl tert-butyl ether desulfurization technology, in particular to a desulfurization adsorbent and its preparation method and application. Background technique [0002] As an important chemical product, methyl tert-butyl ether can be used not only as a high-octane additive, but also as a solvent for resins, spices, paraffin, alkaloids, and organic reaction reagents. High-quality methyl tert-butyl ether can be used in the pharmaceutical industry as an important drug intermediate. In addition, it is also an important raw material for the synthesis of polymer grade isobutylene, rubber, methacrolein and other chemical products. At present, methyl tert-butyl ether mainly uses methanol and mixed carbon four as raw materials, and the organic sulfide content in the carbon four raw material is relatively high, so that the product methyl tert-butyl ether is entrained with various sulfides, including: Sulfides, thioethe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/30C07C41/36C07C43/04
CPCB01J20/06B01J20/3078C07C41/36C07C43/046
Inventor 肖静杨翠婷廖能张述伟管凤宝赵晋
Owner DALIAN JIACHUN GAS PURIFICATION TECH DEV
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