CN1417306A - Clean coal burning catalyst - Google Patents

Abstract

The clean coal burning catalyst consists of composite hydrogen-storing alloy, alkali metal chloride, alkali earth metal chloride, boride, alkali metal oxidant, iron and manganese oxidant and other additive. The production process includes preparation of composite hydrogen-storing alloy, and the composition of coal burning catalyst. The clean coal burning catalyst can coal burning efficiency and reduce pollution, and its use makes it possible to use high-sulfur and low-heat value coal in producing briquette, leading in low coal burning cost.

Description

Clean coal burning catalyst

Technical field: the present invention relates to a kind of fine chemical product, specifically refer to the additive and the production technique thereof of a kind of fire coal or clean coal.

Background technology:

Coal is a kind of important energy and raw material, is the main fuel of Industrial Boiler.Yet the coal of the traditional extensive style burning mode of loosing has many shortcomings, and as the fat coal burning not to the utmost, low grade coal can't utilize, and pollutant emission is serious etc. to the influence of environment.In order to overcome above-mentioned deficiency, present way be combustioncharacteristics, thermal value, volatile matter according to various coals and catch fire, burning indexs such as sulphur content, clinkering property, after-flame, with different coals according to a certain ratio, and add binder, sulphur-fixing agent, produce different performance, burning more completely, the less clean coal of pollutant emission.

But, how further to improve the utilization ratio of the discarded coal (as coal gangue, low calorific value coal and coal slime etc.) in burning of coal quality, the fire box temperature that improves Industrial Boiler and thermo-efficiency, minimizing waste residue and exhaust gas discharging amount, raising low grade coal even colliery, still have great especially economic implications and social effect.

Summary of the invention:

The present invention is intended to propose a kind ofly mainly help the oxygen material by catalysis and by ion, nano level and the formed burning catalyst of micron-sized storage alloy material for hydrogen, it can be reacted into carbonic acid gas and hydrogen rapidly with the carbon monoxide in volatile combustible gases in the coal and the water-gas mat, hydrogen and carbon react the characteristic that generates methane again, to improve temperature of combustion and thermo-efficiency, reduce boiler slag carbon content, reduce slag, the quantity discharged of carbonic acid gas and flue dust, and make full use of discarded coal, save the fat coal resource, thus when saving the consumption of coal widely and reducing coal combustion to the pollution of environment.

A kind of clean coal burning catalyst of the present invention, pinkiness is Powdered, mainly by being the composite hydrogen storage alloy of main raw material with copper, iron, titanium, alkali metal chlorizated salt such as sodium-chlor, Repone K, alkaline-earth metal chlorate such as magnesium chloride, boron compound such as manganese borate, alkali metal oxidising agent such as Potcrate, sodium chlorate, iron, manganese oxygenant such as potassium permanganate, potassium ferrate, and comprise the additive that antioxidant and tensio-active agent are formed, its consisting of by weight percentage:

Composite hydrogen storage alloy 2-5;

Alkaline-earth metal chlorate 15-30;

Boron compound 2.5-5

Alkali metal oxidising agent 1.5-6;

Fe-Mn oxidation agent 1.5-6;

Additive 2.5-7

All the other are alkali metal chlorizated salt.

Its production technique is:

A) preparation of composite hydrogen storage alloy:

Will be after storage hydrogen transition metal oxide (as copper, iron, the titanyl compound) counterweight that purity and fineness are up to the standards in colloidal mill, add simultaneously by alkaline-earth metal (as magnesium) chlorate and add the ionic liquid that surfactant additive dissolves gained, be ground to≤particle 〉=70% of 50nm, what promptly make colloidal has ion, micron order and a nano level composite hydrogen storage alloy.

B) burning catalyst is synthetic:

Alkali metal chlorizated salt is mixed stirring with iron, manganese oxygenant, add boron compound and antioxidant addn, be stirred to evenly, add composite hydrogen storage alloy again and be stirred to even back discharging, promptly get the burning catalyst finished product through check, metering, packing.

Clean coal burning catalyst of the present invention is because the hydrogen storage property of composite hydrogen storage alloy material wherein, hydrogenation reaction takes place in combustion processes, greatly improved pneumatolysis with carbon, improved the generation of inflammable gas methane, form the fierceness burning of flame in the burner hearth, and under the effect of composite oxidant, constantly produce water-gas with hydrogen reaction, through catalytic decomposition, the gasification reaction of hydrogen and carbon wherein, constantly produce methane and water vapor again, thereby the thermo-efficiency of boiler is improved, fire box temperature obviously rises, and the cinder carbon content obviously reduces, and obtains tangible effect of coal saving; Simultaneously, under the prerequisite that does not add other sulphur-fixing agent, sulphur in the coal and the additive reacting generating salt class in the burning catalyst, sulphur dioxide emission are obviously reduced, and reduced the discharging of flue dust, oxynitride, significantly reduced pollution,, reduced the consumption of sulphur-fixing agent in a large number and created favourable condition for when producing clean coal with high sulphur coal to environment; Because coal body and a large amount of calcium base compound sulphur-fixing agent of urging of the present invention has inclined to one side alkali affinity, so the long-term stacking of clean coal of producing does not influence its characteristic, so has very high cold strength, thermostability and fire resistance characteristic; 1250-1330 ℃ high-temperature zone, stable performance is free from side effects to boiler; Raw material sources are wide, and supply is abundant, and is cheap,

In sum, use clean coal burning catalyst of the present invention can improve coal-fired calorific value, improve thermo-efficiency, reduce coal-fired consumption, reduce and pollute, and can use high-sulfur and low calorific value coal to produce clean power moulded coal in a large number, thereby reduce fuel cost and running cost greatly.Therefore with market on various additives very strong competitive edge is arranged on cost performance, have obvious social and economic benefit and promotional value greatly.

Description of drawings:

Fig. 1 is the technological process of production figure of clean coal burning catalyst of the present invention.Wherein: 1 gets transition metal oxide (as copper, iron, titanyl compound) raw material; 2 pairs of transition metal oxide raw materials carry out the analytical study of fineness and purity, and qualified raw material is carried out mixing after the counterweight; 3 get alkaline-earth metal chlorate raw material; 4 add tensio-active agent in above-mentioned alkaline-earth metal chlorate; 5 dissolve into ionic liquid; 6 mix the transition metal oxide compound with the ionic liquid of alkaline-earth metal chlorate, in colloidal mill, grind, composite hydrogen storage alloy; 7 fineness analyses; 8 get the alkali metal chlorizated salt raw material; 9 get iron, manganese oxidant feed; 10 mix stirring with alkali metal chlorizated salt with iron, manganese oxygenant; 11 get the boron compound raw material; 12 get antioxidant; 13 mix stirring with alkali metal chlorizated salt with Fe-Mn oxidation agent, boron compound, anti-oxidant agent; 14 mix stirring with aforementioned mixture with composite hydrogen storage alloy, promptly get and urge the coal body product; 15 pairs of products are tested, measure, are packed.

Embodiment:

Embodiment: by being prepared into clean coal burning catalyst of the present invention with described production technique once with fill a prescription (weight percent):

Sodium-chlor 57.2, magnesium chloride 25, manganese borate 3, potassium permanganate 3.8, Potcrate 5, copper ferrotitanium compound 3, additive 3.

Its using method is: add in the water that 0.3% weight ratio is dissolved in 10 times by coal per ton, mix stirring again with coal.

According to authoritative department contrast actual measurement, under the condition of 4t steam boiler, the calorific value of coal improves 1200-1600 kilocalorie/kg, for a large amount of calorific values that use provide condition at the low grade coal of 1500-4000 kilocalorie/kg; At boiler thermal output is 77% o'clock, and coal saving rate still＞20%; Fire box temperature can improve 50-100 ℃; The cinder carbon content can be reduced to about 5%, and the cinder quantity discharged can reduce more than 25%; Under the prerequisite that does not increase sulphur-fixing agent, flue dust blackness＜1 (Lin Geman), fire box temperature sulfur dioxide emissions in the time of 1320 ℃ reduce about 24%; Soot emissions reduce about 40%; Discharged nitrous oxides reduces about 20%; But long storage is never degenerated, and fire point do not fire, not quick-fried, nontoxic, has no adverse effects with boiler.

Claims (2)

1. clean coal burning catalyst, mainly by being the composite hydrogen storage alloy of main raw material with copper, iron, titanium, alkali metal chlorizated salt, the alkaline-earth metal chlorate, boron compound, alkali metal oxidising agent, iron, manganese oxygenant, and additive, its consisting of by weight percentage:

Composite hydrogen storage alloy 2-5;

Alkaline-earth metal chlorate 15-30;

Boron compound 2.5-5;

Alkali metal oxidising agent 1.5-6;

Fe-Mn oxidation agent 1.5-6;

Additive 2.5-7;

All the other are alkali metal chlorizated salt.

2. the production technique according to the described clean coal burning catalyst of claim 1 is:

A) preparation of composite hydrogen storage alloy:

Will be after storage hydrogen transition metal oxide (as copper, iron, the titanyl compound) counterweight that purity and fineness are up to the standards in colloidal mill, add simultaneously by alkaline-earth metal (as magnesium) chlorate and add the ionic liquid that surfactant additive dissolves gained, be ground to≤particle 〉=70% of 50nm, what promptly make colloidal has ion, micron order and a nano level composite hydrogen storage alloy.

C) burning catalyst is synthetic:

Alkali metal chlorizated salt is mixed stirring with iron, manganese oxygenant, add boron compound and antioxidant addn, be stirred to evenly, add composite hydrogen storage alloy again and be stirred to evenly, promptly get the burning catalyst finished product through check, metering, packing.