Sulfur arsenic purifying agent and its use

A purifying agent, weight percentage technology, applied in organic chemistry, other chemical processes, adsorption purification/separation, etc., can solve the problems of high industrial application cost, low sulfur arsenic content, high bulk density of sulfur arsenic purifying agent, and achieve industrial application. The effect of low cost, high arsenic content, and improved purification capacity

Active Publication Date: 2018-07-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the high bulk density of sulfur and arsenic purifiers in the prior art, the high cost of industrial application, and the low sulfur and arsenic capacity. A new sulfur and arsenic purifier is provided

Method used

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  • Sulfur arsenic purifying agent and its use
  • Sulfur arsenic purifying agent and its use
  • Sulfur arsenic purifying agent and its use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 55 grams of zinc nitrate, 45 grams of copper nitrate, 12 grams of aluminum nitrate, 1.2 grams of cerium nitrate and 450 grams of water were mixed and stirred evenly to obtain a metal salt solution, and 49 grams of sodium carbonate and 550 grams of water were mixed to obtain a sodium carbonate solution. The sodium solution is fully mixed with the metal salt solution, the pH value of the solution is adjusted to 7.0 with 1% by weight of sodium carbonate, reacted at 70° C. for 1 hour, the precipitate is washed and dried, and then 10 grams of aluminum oxide and 1 gram of graphite are added to mix and roll. Based on the total weight percentage of the precipitate and graphite, 30% by weight of water was added, granulated, dried, and pressed into tablets to obtain the sample composition shown in Table 1.

Embodiment 2

[0035] 55 grams of zinc nitrate, 45 grams of copper nitrate, 12 grams of aluminum nitrate, 0.8 grams of cerium nitrate and 450 grams of water were mixed and stirred evenly to obtain a metal salt solution, and 49 grams of sodium carbonate and 550 grams of water were mixed to obtain a sodium carbonate solution. The sodium solution is fully mixed with the metal salt solution, the pH value of the solution is adjusted to 7.0 with 1% by weight of sodium carbonate, reacted at 70° C. for 1 hour, the precipitate is washed and dried, and then 10 grams of aluminum oxide and 1 gram of graphite are added to mix and roll. Based on the total weight percentage of the precipitate and graphite, 30% by weight of water was added, granulated, dried, and pressed into tablets to obtain the sample composition shown in Table 1.

Embodiment 3

[0037] 55 grams of zinc nitrate, 45 grams of copper nitrate, 12 grams of aluminum nitrate, 0.4 grams of cerium nitrate and 450 grams of water were mixed and stirred to obtain a metal salt solution, and 49 grams of sodium carbonate and 550 grams of water were mixed to obtain a sodium carbonate solution. The sodium solution is fully mixed with the metal salt solution, the pH value of the solution is adjusted to 7.0 with 1% by weight of sodium carbonate, reacted at 70° C. for 1 hour, the precipitate is washed and dried, and then 10 grams of aluminum oxide and 1 gram of graphite are added to mix and roll. Based on the total weight percentage of the precipitate and graphite, 30% by weight of water was added, granulated, dried, and pressed into tablets to obtain the sample composition shown in Table 1.

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Abstract

The invention relates to a sulfur-arsenic cleanser and a use thereof. The sulfur-arsenic cleanser mainly solves the problem that the existing sulfur-arsenic cleanser has high bulk density, a low sulfur and arsenic capacity and a high industrial application cost. The sulfur-arsenic cleanser comprises, by weight, 20-75% of a hydrotalcite-like compound, 20-75% of aurichalcite, 1-10% of basic cupric carbonate and 0.01-5% of a rare earth metal R. The sulfur-arsenic cleanser solves the above problem and can be used for purification of natural gas, synthetic gas and light gas and liquid hydrocarbons.

Description

technical field [0001] The invention relates to a sulfur and arsenic purifying agent and its application. Background technique [0002] Impurities such as sulfur and arsenic are widely present in raw materials such as natural gas, synthesis gas, coal gas, light gas and liquid hydrocarbons. The existence of these impurities will lead to poisoning and deactivation of many catalysts, greatly shorten the life of catalysts, and even cause the catalytic reaction to fail to proceed normally. ; In addition, the sulfur and arsenic impurities that have not been removed will enter the downstream synthetic products as the production progresses, which will bring a series of environmental and health problems. Therefore, efficient and high-precision removal of impurities such as sulfur and arsenic is of great significance for protecting the main catalyst of downstream devices and improving the quality of downstream products at the same time. [0003] In general, the sulfur-containing subs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J20/30C10L3/10B01D53/00C07C7/12C07C11/06
Inventor 贾银娟石竹陈剑刘志成高焕新
Owner CHINA PETROLEUM & CHEM CORP
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