CN101961594A

CN101961594A - Desulfurizer

Info

Publication number: CN101961594A
Application number: CN2009101819175A
Authority: CN
Inventors: 安全建; 曹敏
Original assignee: KUNSHAN RESEARCH INSTITUTE OF FINE CHEMICAL Co Ltd
Current assignee: KUNSHAN RESEARCH INSTITUTE OF FINE CHEMICAL Co Ltd
Priority date: 2009-07-23
Filing date: 2009-07-23
Publication date: 2011-02-02

Abstract

The invention discloses a desulfurizer which is composed of subcarbonate, silica and accessory ingredient. Based on the total weight of the desulfurizer, the desulfurizer comprises, in percentage by weight, 50-97 wt% of subcarbonate, 2.5-20 wt% of silica and 0.1-30 wt% of accessory ingredient, wherein the subcarbonate is at least one of basic cupric carbonate and basic zinc carbonate, and the accessory ingredient is at least one of alumina and attapulgite powder. The desulfurization (H2S) precision of the desulfurizer can be less than 0.05mg/M3, and sulphur content is about 20% (Wt/Wt). Because the raw material does not need high-temperature decomposition, energy consumption can be greatly lowered by more than 50%, thus obtaining the purpose of energy saving and emission reduction.

Description

Desulfurizing agent

Technical field

The present invention relates to a kind of desulfurizing agent, especially a kind of desulfurization precision and Sulfur capacity height, and have the desulfurizing agent of dearsenification effect concurrently.

Background technology

Traditional desulfurizing agent is with behind the subcarbonate pyrolytic, just obtains finished product through after extruded moulding, oven dry and the high-temperature roasting successively again, and the desulfurization precision and the Sulfur capacity of this type of desulfurizing agent are lower, and its desulfurization precision is less than 0.1mg/M ³, generally about 10% (Wt/Wt), its raw material subcarbonate needs pyrolytic to Sulfur capacity, therefore relatively power consumption.

Summary of the invention

In order to address the above problem, the invention provides a kind of desulfurizing agent, the desulfurization (H of this desulfurizing agent ₂S) precision can be less than 0.05mg/M ³, Sulfur capacity is about 20% (Wt/Wt), and is capable of reducing energy consumption more than 50% because raw material does not need pyrolytic to reduce energy consumption greatly, reaches the energy-saving and emission-reduction purpose.

The present invention for the technical scheme that solves its technical problem and adopt is:

A kind of desulfurizing agent is made up of subcarbonate, silica and auxiliary agent, in the desulfurizing agent total weight percent, the basic carbonate salt content is 50～97%, dioxide-containing silica is 2.5～20%, and auxiliary agent content is 0.1～30%, and wherein said subcarbonate is basic copper carbonate (Cu ₂(OH) ₂CO ₃) and basic zinc carbonate (ZnCO ₃2Zn (OH) ₂H ₂O) at least a in, described auxiliary agent is that aluminium oxide and attapulgite (mainly contain SiO ₂: 50.4～61.3%, Al ₂O ₃: 9.4～9.8%, MgO:9.3～10.5%, CaO:1.8～2.5%, Fe ₂O ₃: 2.3～2.9%, Na ₂O:0.3～0.5%, K ₂O:1.0～1.6%, TiO ₂: at least a 0.2～0.6%, MnO:0.04～0.08%).

The invention has the beneficial effects as follows: desulfurizing agent of the present invention has added the auxiliary agent that is made of one of at least aluminium oxide and attapulgite in subcarbonate, and the cementation by Ludox powder mixture spin or extrusion modling that subcarbonate and auxiliary agent are mixed, drying and dewatering makes finished product then, because the adding of auxiliary agent has improved desulfurization precision and Sulfur capacity, desulfurization (H ₂S) precision can be less than 0.05mg/M ³, Sulfur capacity because subcarbonate does not need pyrolytic, has reduced energy consumption again greatly about 20% (Wt/Wt), capable of reducing energy consumption more than 50%, reaches the energy-saving and emission-reduction purpose.

The specific embodiment

The embodiments of the invention prescription sees Table 1:

Table 1:(unit: account for the desulfurizing agent total weight percent, %)

The preparation method of desulfurizing agent of the present invention is as follows:

Pulverous subcarbonate and pulverous auxiliary agent are mixed, spray then Ludox as binding agent (be the hydrate of silica, mSiO ₂NH ₂O), through mode moulding such as spin or extrusions, after 80～200 ℃ of dryings, obtain the finished product desulfurizing agent then.

Claims

1. desulfurizing agent, it is characterized in that: form by subcarbonate, silica and auxiliary agent, in the desulfurizing agent total weight percent, the basic carbonate salt content is 50～97%, dioxide-containing silica is 2.5～20%, auxiliary agent content is 0.1～30%, and wherein said subcarbonate is at least a in basic copper carbonate and the basic zinc carbonate, and described auxiliary agent is at least a in aluminium oxide and the attapulgite.