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Normal temperature desulfurization and arsenic removal agent and preparation method thereof

A technology for desulfurization and arsenic removal by weight, applied in separation methods, chemical instruments and methods, and refining hydrocarbon oil, etc. The effect of multiple active centers

Active Publication Date: 2017-02-15
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 problem of high bulk density and low sulfur capacity and arsenic capacity of the desulfurization and arsenic removal agent in the prior art, and a new desulfurization and arsenic removal agent and its preparation method are provided

Method used

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  • Normal temperature desulfurization and arsenic removal agent and preparation method thereof
  • Normal temperature desulfurization and arsenic removal agent and preparation method thereof
  • Normal temperature desulfurization and arsenic removal agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] 30 kilograms of copper nitrate, 40 kilograms of zinc nitrate, 10 kilograms of aluminum nitrate, 0.1 kilogram of silver nitrate and 500 kilograms of water are mixed and stirred to obtain a metal salt solution, and 30 kilograms of sodium carbonate and 550 kilograms of water are mixed to obtain a sodium carbonate solution. Mix sodium solution and metal salt solution evenly, react at 70°C for 1 hour, wash and dry the precipitate, then add 6 kg of alumina and 1 kg of graphite, mix and roll, then add 30% by weight of water, granulate, and roast at 270°C After 2 hours, it was pressed into tablets and formed, and the composition of the obtained sample is shown in Table 1.

Embodiment 2

[0033] 20 kilograms of copper nitrate, 50 kilograms of zinc nitrate, 10 kilograms of aluminum nitrate, 0.2 kilograms of rhodium chloride and 500 kilograms of water are mixed and stirred to obtain a metal salt solution, and 30 kilograms of sodium carbonate and 550 kilograms of water are mixed to obtain a sodium carbonate solution. Mix sodium carbonate solution and metal salt solution evenly, react at 60°C for 2 hours, wash and dry the precipitate, then add 5 kg of alumina, 1 kg of graphite, mix and roll, then add 35% by weight of water, granulate, 270°C Calcined for 2 hours, pressed into tablets, and the composition of the obtained sample is shown in Table 1.

Embodiment 3

[0035]10 kilograms of copper nitrate, 60 kilograms of zinc nitrate, 10 kilograms of aluminum nitrate, 0.2 kilograms of silver nitrate and 500 kilograms of water are mixed and stirred to obtain a metal salt solution, and 30 kilograms of sodium carbonate and 550 kilograms of water are mixed to obtain a sodium carbonate solution. Mix sodium solution and metal salt solution evenly, react at 60°C for 2 hours, wash and dry the precipitate, then add 6 kg of alumina, 1 kg of graphite, mix and roll, then add 50% by weight of water, granulate, and roast at 270°C After 2 hours, it was pressed into tablets and formed, and the composition of the obtained sample is shown in Table 1.

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Abstract

The invention relates to a room-temperature desulfurization and dearsenification agent and a preparation method thereof, and aims at mainly solving the problems in the prior art that the bulk density of a desulfurization and dearsenification agent is high, and sulfur capacity and arsenic capacity are low. The problems are solved very well by adopting the technical scheme that the desulfurization and dearsenification agent provided by the invention is prepared from the following components in parts by weight: (a) 1-10 parts of aurichalcite; (b) 10-50 parts of copper oxide; (c) 10-60 parts of zinc oxide; and (d) 0.01-1 part of at least one of transition metal including Rh, Pt, Pd, Ag and Au. The room-temperature desulfurization and dearsenification agent can be used for purifying natural gas, synthesized gas, light gas-liquid-state hydrocarbons and the like.

Description

technical field [0001] The invention relates to a normal temperature desulfurization and arsenic removal agent and a preparation method thereof. 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]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J20/08B01J20/30B01D53/02B01D15/08C10G25/00
CPCB01D15/08B01D53/02B01D2253/1124B01D2257/00B01D2257/30B01D2257/304B01J20/0229B01J20/0233B01J20/06B01J20/08B01J20/20B01J2220/42B01J2220/4806C07C7/12C10G25/003C10L3/101C10L3/103C07C11/06
Inventor 贾银娟王灿周健刘志成高焕新
Owner CHINA PETROLEUM & CHEM CORP
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