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Vulcanizing agent for removing hydrogen sulfide

A technology of desulfurization agent and hydrogen sulfide, applied in chemical instruments and methods, separation of dispersed particles, separation methods, etc., can solve the problems of low strength of desulfurization agent, easy pulverization, poor water resistance, etc., to improve desulfurization accuracy and sulfur The effects of high capacity, tight arrangement of atoms, and fast response speed

Inactive Publication Date: 2019-09-17
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome defects such as low sulfur capacity, poor precision, low strength of the desulfurizing agent, prone to pulverization and poor water resistance during application, so as to provide a sulfurizing agent for removing hydrogen sulfide

Method used

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Examples

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preparation example Construction

[0031] This embodiment also relates to a method for preparing a desulfurizer, which includes the following steps: uniformly mixing nano-sized zinc ferrite, an adhesive and a transition metal promoter, kneading and molding, drying and roasting to obtain a desulfurizer. The preparation process is simple and easy to operate, and is suitable for industrial production.

[0032] Among them, the nano-scale zinc ferrite is prepared according to the following steps: prepare the zinc-containing compound into a zinc solution, add ammonia substances to adjust the pH to 7-8, then raise the temperature of the solution to 70-80°C, and then prepare the iron-containing compound Iron solution, and pour the iron solution into the zinc solution at a rate of 5-6ml / min to form a co-precipitate, and then dry the co-precipitate to obtain nano-scale zinc ferrite. Using this preparation method, During the preparation process, the pH of the solution is 7-8, which is neutral and slightly alkaline, less c...

Embodiment 1

[0036] Embodiment 1 relates to a kind of desulfurizing agent for refining and removing hydrogen sulfide, and the desulfurizing agent is specifically prepared according to the following method:

[0037] S1. Preparation of nano-scale zinc ferrite: take basic copper carbonate with the quality of zinc as 650g, configure it into a zinc solution, add ammonia water to adjust the pH to 7.0-7.3, then heat the solution to 75°C, and then A standard with a mass of 1120g weighs ferric nitrate and configures it into an iron solution, then slowly pours the iron solution into the zinc solution at a feeding rate of 5.5ml / min to form a coprecipitate, and then put the coprecipitate at 100°C drying to obtain dry nano-scale zinc ferrite;

[0038] S2. Preparation of desulfurizer: Mix 70g of nano-sized zinc ferrite, 20g of sodium carboxymethylcellulose and 10g of copper oxide with water and knead them into shape, then dry the obtained mixture at 110°C for 2 hours , to obtain a dry semi-finished pro...

Embodiment 2

[0040] Embodiment 2 relates to a kind of desulfurizing agent for refining and removing hydrogen sulfide, and the desulfurizing agent is specifically prepared according to the following method:

[0041] S1. Preparation of nano-scale zinc ferrite: Weigh zinc nitrate with the quality of zinc as 650g, configure it into a zinc solution, add ammonia water to adjust the pH to 7.2-7.5, then heat the solution to 70°C, and then use the quality of iron as the 1120g standard weighs iron phosphate, configures iron solution, then slowly pours the iron solution into the zinc solution at a feeding rate of 5ml / min to form a coprecipitate, and then dries the coprecipitate at 100°C, Obtain dry nano-scale zinc ferrite;

[0042]S2. Preparation of desulfurizer: Mix 75g of nano-sized zinc ferrite, 20g of attapulgite and 5g of nickel oxide with water and knead them into shape, then dry the obtained mixture at 100°C for 3 hours to obtain a dry The semi-finished product is then roasted at 200°C for 2 ...

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Abstract

The invention relates to the field of desulfurizing agents, and specifically relates to a desulfurizing agent for removing hydrogen sulfide. The desulfurizing agent is prepared from the following raw materials in parts by weight: 70-90 parts of nanoscale zinc ferrite, 5-20 parts of a binder, and 5-10 parts of a transition metal accelerant; the desulfurizing agent, prepared from the nanoscale zinc ferrite, the binder and the transition metal accelerant according to a certain ratio, is compact in atomic arrangement and stable in crystal form, therefore the prepared desulfurizing agent has the advantages of high mechanical strength, little possibility of active component loss and good water resistance, and the hydrogen sulfide content in ammonia gas can be reduced to 0.01 mug / g or below, thereby meeting the sulfur-containing requirements of liquid ammonia for chemical industry and environmental protection.

Description

technical field [0001] The invention relates to the field of desulfurizing agents, in particular to a desulfurizing agent for removing hydrogen sulfide. Background technique [0002] In the industrial production process of petroleum smelting, because the raw materials contain more sulfur-containing substances, during the production process, the reaction of sulfur-containing substances will release a large amount of hydrogen sulfide, so sewage stripping devices are usually installed in refineries Purify the sulfur-containing and ammonia-containing sewage discharged from each production unit of the refinery, and recover hydrogen sulfide and ammonia at the same time. After the hydrogen sulfide is recovered, sulfur is produced by the sulfur recovery unit, and ammonia is compressed by the ammonia compressor to produce liquid ammonia or directly produced ammonia. [0003] Since the recovered ammonia gas also contains water, hydrogen sulfide and other impurities, it will have a gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/52B01D53/81
CPCB01D53/52B01D53/81B01D2251/60
Inventor 赵宇轩陈玲玲廖奕鸥单红飞迟莹
Owner SHENYANG SANJUKAITE CATALYST
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