阅读说明：本技术 一种煤粉抑焦除焦助燃改性强化复合制剂 (Pulverized coal coke-inhibiting decoking combustion-supporting modified reinforced composite preparation ) 是由 张建辉 肖瑞莲 于 2020-05-21 设计创作，主要内容包括：本发明公开了一种煤粉抑焦除焦助燃改性强化复合制剂,包括如下质量百分比的原料：5-20％的深化燃烧剂、6-15％的增氧催化剂、10-20％的裂解助燃剂、1-10％的引发剂、0.5-5％的渗透剂、3-10％的稳定剂、5-15％的解焦剂、2-10％的改性强化剂、0.5-8％的失活剂以及0.2-5％的调节剂。本发明的复合制剂可应用于电厂锅炉、炼铁高炉、水泥窑炉及炼焦炉生产,在原煤中配加入复合制剂后,达到改善煤粉特性,提高煤粉灰熔点,提高煤粉反应活性,加速煤粉燃烧效率和燃烧速率,该复合制剂具有对环境无害,对人体无害,能够降低能耗的特点。(The invention discloses a pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation, which comprises the following raw materials in percentage by mass: 5 to 20 percent of deepening combustion agent, 6 to 15 percent of oxygenation catalyst, 10 to 20 percent of cracking combustion improver, 1 to 10 percent of initiator, 0.5 to 5 percent of penetrating agent, 3 to 10 percent of stabilizing agent, 5 to 15 percent of decoking agent, 2 to 10 percent of modified reinforcing agent, 0.5 to 8 percent of deactivator and 0.2 to 5 percent of regulator. The composite preparation can be applied to the production of power plant boilers, iron-making blast furnaces, cement kilns and coke ovens, and can improve the characteristics of coal powder, improve the ash fusion point of the coal powder, improve the reaction activity of the coal powder and accelerate the combustion efficiency and the combustion rate of the coal powder after being added into raw coal.)

1. The pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation is characterized by comprising the following raw materials in percentage by mass: 5 to 20 percent of deepening combustion agent, 6 to 15 percent of oxygenation catalyst, 10 to 20 percent of cracking combustion improver, 1 to 10 percent of initiator, 0.5 to 5 percent of penetrating agent, 3 to 10 percent of stabilizing agent, 5 to 15 percent of decoking agent, 2 to 10 percent of modified reinforcing agent, 0.5 to 8 percent of deactivator and 0.2 to 5 percent of regulator.

2. The pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation according to claim 1 is characterized by comprising the following raw materials in percentage by mass: 18 percent of deepening combustion agent, 15 percent of oxygenation catalyst, 20 percent of cracking combustion improver, 7 percent of initiator, 5 percent of penetrating agent, 5 percent of stabilizing agent, 15 percent of decoking agent, 2 percent of modified reinforcing agent, 8 percent of deactivator and 5 percent of regulator.

3. The pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation according to claim 1 is characterized by comprising the following raw materials in percentage by mass: 5 percent of deepening combustion agent, 14.5 percent of oxygenation catalyst, 19.5 percent of cracking combustion improver, 10 percent of initiator, 4.5 percent of penetrating agent, 10 percent of stabilizing agent, 14.5 percent of decoking agent, 10 percent of modification strengthening agent, 7.5 percent of deactivator and 4.5 percent of regulator.

4. The pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation according to claim 1 is characterized by comprising the following raw materials in percentage by mass: 20% of deepening combustion agent, 12% of oxygenation catalyst, 15% of cracking combustion improver, 9% of initiator, 0.5% of penetrating agent, 10% of stabilizing agent, 15% of decoking agent, 10% of modified reinforcing agent, 3.5% of deactivator and 5% of regulator.

5. The pulverized coal coking-inhibiting, decoking, combustion-supporting, modifying and strengthening composite preparation as claimed in claim 1, wherein the deepening combustion agent is composed of one or more of activated silicon, activated magnesium oxide and activated aluminum oxide; the oxygenation catalyst is composed of one or more of barium manganate, manganese oxide and ferrocene.

6. The pulverized coal coking-inhibiting, decoking, combustion-supporting modified and strengthened composite preparation according to claim 1, characterized in that the cracking combustion improver is composed of one or a mixture of more than one of boron-magnesium powder, borax, acrylamide; the initiator is composed of one or more of alkoxyamine, carbazide and cyclohexylamine.

7. The pulverized coal coking-inhibiting, decoking, combustion-supporting, modifying and strengthening composite preparation as claimed in claim 1, wherein the penetrating agent is composed of one or more of copper nitrate, cerium nitrate, lanthanum nitrate and neodymium oxide; the stabilizer is composed of one or a mixture of two of titanium dioxide and manganese dioxide.

8. The pulverized coal coke-inhibiting, coke-removing, combustion-supporting, modifying and strengthening composite preparation according to claim 1, wherein the decoking agent is composed of one or more of activated calcium oxide, calcium nitrate, magnesium carbonate and calcium propionate; the modified reinforcer is composed of one or more of boric anhydride, boric acid, boron oxide and carboxymethyl cellulose.

9. The pulverized coal coke-inhibiting decoking combustion-supporting modified and strengthened composite preparation as claimed in claim 1, wherein the deactivator is composed of one or more of cobalt sulfate, manganese sulfate, and cobalt phthalocyanine sulfonate.

10. The pulverized coal coke-inhibiting decoking combustion-supporting modified and strengthened composite preparation according to claim 1, wherein the modifier is composed of one or more of refined adipic acid, citric acid, succinic acid and DBA.

Technical Field

The invention relates to the technical field of coal dust treatment in coal burning and coking equipment, in particular to a coal dust coke-inhibiting decoking combustion-supporting modified reinforced composite preparation.

Background

China has abundant coal resources and plays an extremely important role in economic construction, coal-fired equipment accounts for a large proportion in the industrial field, but because of the common practical problems of low ash melting point, high sulfur content, low heat value, large ash content and the like of China coal types, the coal-fired equipment seriously deposits slag, cokes, incompletely burns and has high slag carbon content due to the characteristics of the coal types in production operation, the safe and economic operation of the equipment is seriously influenced, and resources are seriously wasted. Along with the increase of the steel yield year by year in China, the capacity is stably kept in the world first, the demand of metallurgical coke is increased more and more, but the high-quality coking resources in China are deficient, strong-viscosity coal is scarce, the proportion of non-coking coal resources such as weak-viscosity coal and non-viscosity coal is large, the contradiction between supply and demand is increasingly prominent, and the method has important practical significance and strategic significance for improving the coking and coal blending structure and modifying the non-coking coal resources in the coking production by combining the current situation. Therefore, the development of the coking-inhibiting, decoking and flame-retardant modified composite preparation for coal dust has wide prospect and can bring important environmental and economic benefits.

In the areas of Hebei, Sichuan, Gansu and the like in recent years, products with similar effects to those of the invention are developed, but the products have single and some effects, but the effects are not outstanding, the addition amount is large, the manufacturing cost is high, the products are difficult to popularize and apply in production, the products have potential safety hazards in production, and at present, a composite preparation which integrates multiple functions of coke suppression and decoking, combustion supporting and ash removal and modification strengthening is not available at home and abroad.

The existing single-function coal powder additives comprise the following components:

1. the invention patent application (application number is 201610276728.6, application date is 2016.04.29) discloses a pulverized coal boiler decoking agent, which can realize the decoking function, but only considers decoking, has single function, is not deeply analyzed from the coal-fired coking mechanism, can not comprehensively control the coal ash melting point from the source, reduces the generation amount of coke residue, can not achieve the coke inhibiting function, and can not treat both symptoms and root causes;

2. the invention patent application (application No. 02133147.2, application date 2002.10.10) discloses a catalytic combustion improver for pulverized coal injected into a blast furnace and a production process thereof, wherein the combustion improver has a combustion-supporting effect, but the formula contains KMnO4, and the decomposition temperature of KMnO4 is only 240 ℃, so that after the combustion improver is added, a safety hazard exists in a powder making system, and besides, the circulation enrichment in the blast furnace can be caused to generate nodulation due to avoiding K element in an iron-making blast furnace, so that the furnace condition is influenced.

3. The patent application of the invention (application No. 201310026601.5, application No. 2013.01.24) discloses an anthracite pulverized coal modifier and a coal blending coking method using the modifier, but combustion-supporting and energy-saving effects are not considered, the modification operation is complicated, and the blending amount is large.

Disclosure of Invention

The invention aims to provide a pulverized coal coke-inhibiting decoking combustion-supporting modified reinforced composite preparation, in particular to a composite preparation applied to the production of power plant boilers, iron-making blast furnaces, cement kilns and coke ovens.

In order to achieve the purpose, the invention provides the following technical scheme:

a pulverized coal coking-inhibiting decoking combustion-supporting modified reinforced composite preparation comprises the following raw materials in percentage by mass: 5 to 20 percent of deepening combustion agent, 6 to 15 percent of oxygenation catalyst, 10 to 20 percent of cracking combustion improver, 1 to 10 percent of initiator, 0.5 to 5 percent of penetrating agent, 3 to 10 percent of stabilizing agent, 5 to 15 percent of decoking agent, 2 to 10 percent of modified reinforcing agent, 0.5 to 8 percent of deactivator and 0.2 to 5 percent of regulator.

As a further scheme of the invention: the composite material specifically comprises the following raw materials in percentage by mass: 18 percent of deepening combustion agent, 15 percent of oxygenation catalyst, 20 percent of cracking combustion improver, 7 percent of initiator, 5 percent of penetrating agent, 5 percent of stabilizing agent, 15 percent of decoking agent, 2 percent of modified reinforcing agent, 8 percent of deactivator and 5 percent of regulator.

As a further scheme of the invention: the composite material specifically comprises the following raw materials in percentage by mass: 5 percent of deepening combustion agent, 14.5 percent of oxygenation catalyst, 19.5 percent of cracking combustion improver, 10 percent of initiator, 4.5 percent of penetrating agent, 10 percent of stabilizing agent, 14.5 percent of decoking agent, 10 percent of modification strengthening agent, 7.5 percent of deactivator and 4.5 percent of regulator.

As a further scheme of the invention: the composite material specifically comprises the following raw materials in percentage by mass: 20% of deepening combustion agent, 12% of oxygenation catalyst, 15% of cracking combustion improver, 9% of initiator, 0.5% of penetrating agent, 10% of stabilizing agent, 15% of decoking agent, 10% of modified reinforcing agent, 3.5% of deactivator and 5% of regulator.

As a further scheme of the invention: the deepened combustion agent is composed of one or more than one of activated silicon, activated magnesium oxide and activated aluminum oxide; the oxygenation catalyst is composed of one or more of barium manganate, manganese oxide and ferrocene.

As a further scheme of the invention: the cracking combustion improver consists of one or more of boron magnesium powder, borax and acrylamide; the initiator is composed of one or more of alkoxyamine, carbazide and cyclohexylamine.

As a further scheme of the invention: the penetrating agent consists of one or more of copper nitrate, cerium nitrate, lanthanum nitrate and neodymium oxide; the stabilizer is composed of one or a mixture of two of titanium dioxide and manganese dioxide.

As a further scheme of the invention: the decoking agent is composed of one or more than one of active calcium oxide, calcium nitrate, magnesium carbonate and calcium propionate; the modified reinforcer is composed of one or more of boric anhydride, boric acid, boron oxide and carboxymethyl cellulose.

As a further scheme of the invention: the deactivator is composed of one or more of cobalt sulfate, manganese sulfate and sulfonated cobalt phthalocyanine.

As a further scheme of the invention: the regulator is composed of one or more of refined adipic acid, citric acid, succinic acid and DBA.

Compared with the prior art, the invention has the beneficial effects that: the composite preparation is added into raw coal fed into a boiler, so that the coal dust melting point can be effectively improved, coking on the heating surface of the boiler is obviously inhibited, the raw coal and the formed old coke slag are subjected to chemical reaction, and the raw coal is adsorbed and permeated into a coke layer to be subjected to dehydroxylation expansion micro-explosion and perform targeted blasting, compact holes are formed in a coke block, hard coke becomes crisp and powdery and automatically falls off, or the hard coke falls off by means of a soot blowing device and a flue gas shearing knife, and the effects of inhibiting coke and removing coke are achieved;

the composite preparation is added into blast furnace coal powder injection, so that the combustion efficiency and the combustion speed of the coal powder can be obviously accelerated, the ignition temperature of the coal powder is reduced, the coal powder is promoted to be fully combusted in a tuyere raceway, coking is avoided, the problem of tuyere burning loss is effectively solved, the generation amount of unburned coal powder is reduced, the fluidity of iron slag is enhanced, the permeability and the liquid permeability of the blast furnace are enhanced, and the stable operation of the furnace condition is promoted;

in the process of producing coal powder for combustion in a rotary kiln in the cement industry, the phenomena of skinning and coking are easy to form, the energy consumption is high, the production efficiency is low, the solid energy consumption can be reduced by adding the composite preparation in the coal powder in the decomposing furnace process, the yield is increased, the environmental pollution is reduced, the clinker quality is improved, and the equipment operation period is prolonged;

in the coal blending link of coke production in the coking industry, weakly caking coal and non-caking coal are mixed with the composite preparation at normal temperature to form modified coal, so that the caking property of the modified coal is enhanced, the modified coal can account for 20-60% of the total amount of coking coal blending, the modified coal can replace coking coal, fat coal and gas coal, and the coke produced by a coke oven according to the conventional process completely meets the standard requirement, thereby greatly reducing the production cost of coking enterprises and widening the coal resources for coal blending and coking.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.