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A kind of desulfurizer and its preparation method and application

A desulfurizer and porogen technology, applied in the field of desulfurizer and its preparation, can solve the problems of sulfur capacity and activity stability need to be further improved, and achieve stable desulfurization effect, good activity stability and high sulfur removal rate. Effect

Active Publication Date: 2021-06-01
昆山市精细化工研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at medium temperature (200-300°C), high space velocity (1000h -1 Above) the sulfur capacity and activity stability need to be further improved

Method used

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  • A kind of desulfurizer and its preparation method and application
  • A kind of desulfurizer and its preparation method and application
  • A kind of desulfurizer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The desulfurizer of this embodiment includes a carrier and an active component loaded on the carrier. The carrier is a mixture of activated carbon, zinc oxide and iron oxide. The mass ratio of activated carbon, zinc oxide and iron oxide is 2:3:1. Divided into active components of the Mn-Ti-Co system, wherein, based on the mass of the carrier as 100%, the mass percentage of Mn is 10%, the mass percentage of Ti is 10%, and the mass percentage of Co is 10%.

[0042] The preparation method of above-mentioned desulfurizer comprises the steps:

[0043] 1) Immerse the carrier in a solution containing sodium carboxymethyl cellulose for 1 hour. The sodium carboxymethyl cellulose accounts for 3% by mass of the carrier. After drying at 80°C, bake at 100°C for 2 hours, and then treat the porogen The carrier was immersed in an aqueous solution of soluble manganese salt, the filtrate was filtered off, dried at 110°C for 3 hours, and calcined at 400°C for 2 hours to obtain a carrier l...

Embodiment 2

[0047] The desulfurizer of this embodiment includes a carrier and an active component loaded on the carrier. The carrier is a mixture of activated carbon, zinc oxide and iron oxide. The mass ratio of activated carbon, zinc oxide and iron oxide is 5:2:1. Divided into active components of the Mn-Ti-Co system, wherein, based on the mass of the carrier as 100%, the mass percentage of Mn is 5%, the mass percentage of Ti is 20%, and the mass percentage of Co is 8%.

[0048] The preparation method of above-mentioned desulfurizer comprises the steps:

[0049] 1) Soak the carrier in a solution containing hydroxyethyl cellulose for 1 to 2 hours. The mass percentage of hydroxyethyl cellulose in the carrier is 1%. After drying at 60°C, bake at 150°C for 1.5h, and then treat the porogen The final carrier is immersed in an aqueous solution of soluble manganese salt, the filtrate is filtered off, dried at 120°C for 2 hours, and calcined at 450°C for 3 hours to obtain a carrier loaded with Mn...

Embodiment 3

[0053] The desulfurizer of this embodiment includes a carrier and an active component loaded on the carrier. The carrier is a mixture of activated carbon, zinc oxide and iron oxide. The mass ratio of activated carbon, zinc oxide and iron oxide is 3:2:1. The active component Divided into active components of the Mn-Ti-Co system, wherein, based on the mass of the carrier as 100%, the mass percentage of Mn is 10%, the mass percentage of Ti is 18%, and the mass percentage of Co is 5%.

[0054] The preparation method of above-mentioned desulfurizer comprises the steps:

[0055] 1) Immerse the carrier in a solution containing hydroxyethyl cellulose for 2 hours. The hydroxyethyl cellulose accounts for 2% by mass of the carrier. After drying at 80°C, bake at 200°C for 1 hour, and then place the porogen-treated carrier Soak in an aqueous solution of soluble manganese salts, filter the filtrate, dry at 100°C for 5 hours, and roast at 400°C for 5 hours to obtain a carrier loaded with Mn;...

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Abstract

The invention provides a desulfurizer and a preparation method thereof. The desulfurizer of the present invention includes a carrier and an active component loaded on the carrier, the carrier is a mixture of activated carbon, zinc oxide and iron oxide, and the active component is an active component of the Mn-Ti-Co system, Wherein, based on the mass of the carrier as 100%, the mass percentage of the Mn is 5-20%, the mass percentage of the Ti is 10-20%, and the mass percentage of the Co is 5-10%. The preparation method of the desulfurizing agent of the present invention is simple, the impregnation and roasting process are simple, and the prepared desulfurizing agent has high sulfur removal rate, high sulfur capacity and good activity stability under the conditions of medium temperature and high space velocity, and is suitable for the production of industrial gases. Carbonyl sulfide removal, especially carbonyl sulfide removal in methanol synthesis process.

Description

technical field [0001] The invention belongs to the technical field of desulfurizing agents, and relates to a desulfurizing agent and its preparation method and application. Background technique [0002] Carbonyl sulfide (COS) widely exists in many important industrial gases related to coal chemical industry and petrochemical industry, such as coke oven gas, water gas, natural gas, liquefied petroleum gas and Claus tail gas. Sulfides can cause equipment corrosion and catalyst poisoning during production. For example, in the Fe-Cu-K catalyst in F-T synthesis, when the sulfur content per gram of the catalyst reaches 4 mg, the activity of the catalyst can be reduced by 50%, resulting in an increase in production cost and a decrease in product quality. In addition, COS emitted to the atmosphere without treatment can form SO 2 , causing serious environmental problems. [0003] At present, the technologies for removing carbonyl sulfide at home and abroad are mainly aimed at gas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/48B01D53/81
CPCB01D53/485B01D53/81B01D2257/308
Inventor 张林生徐琦苗树运安全建
Owner 昆山市精细化工研究所有限公司