CN1101663A - Powdered coal organic adhesive forming technology - Google Patents
Powdered coal organic adhesive forming technology Download PDFInfo
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- CN1101663A CN1101663A CN 93118957 CN93118957A CN1101663A CN 1101663 A CN1101663 A CN 1101663A CN 93118957 CN93118957 CN 93118957 CN 93118957 A CN93118957 A CN 93118957A CN 1101663 A CN1101663 A CN 1101663A
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- compound binder
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Abstract
The compound organic binder contains starch, watered sodium borate, urea and formol resin. The amount of the binder in coal powder cake forming is 3-10% of the total coal weight. The invention has remarkable advantages. Compared with carbonized coal cake, the coal cakes made with this invention can greatly raise CO+H2 content in the gas by about 20%, an obvious economic benefit.
Description
Powdered coal organic adhesive forming technology belongs to Coal Chemical Industry and solid fuel field, mainly is to go into furnace gas production chemical industry behind bituminous coal, hard coal and the coked coal powder molding bonded with unstripped gas or as civilian incendiary raw material.
China is a large agricultural country, and the year requirement of agrochemical is huge.The producer that the whole nation produces chemical fertilizer has about 1100 families, the raw materials for production of these fertilizer planies except that part producer adopts crude oil or Sweet natural gas, the gas making of most station-service coal cinder.Owing to all there is a large amount of coal dust (claiming fine coal again) to produce in the course of processing of coal mining and coal cinder, reality only accounts for total 50-60% to factory's coal at the used coal cinder of plant produced (claiming lump coal again).Fertilizer plant inconvenience accounts for about half of total consumption as the fine coal of feed coal like this, lump coal and fine coal price difference great disparity in addition, thus cause very big waste, make the fertilizer enterprises production cost remain high long-term loss.Early seventies is in order to address the above problem, thereby developed the technology that synthetic ammonia is made in coal powder formation gas making.Recent two decades comes, in the process of coal powder formation, people have successively developed the moulding process of multiple formation such as lime-carbonated coal balls, paper pulp coal briquette, clay coal briquette, cement coal briquette, humic acids coal rod, but ubiquitous problem is the material source of binding agent has very strong region and limitation, and along with the difference of binding agent self character, also in various degree exist low, defectives such as steam consumption big, binding agent freight charges height, powdered coal formation complexity, the rising of synthetic ammonia unit consumption of low, the single stove gas forming amount of hot strength such as coal briquette.As the lime-carbonated coal balls of still using at present in the part small fertilizer plant, the lime that is adopted just needs certain mining area roping, moulding process also needs carbonization in the carbide furnace of special use, and the ash oontent of the coal briquette of moulding increases 20-25% than former lump coal, thereby greatly reduces the separate unit gas forming amount of Gas-making Furnace; Throughput and the quality of the required unstripped gas of Ammonia Production have been influenced.
Since the seventies, once the someone explored and utilizes useless starch and other organic or inorganic component to be developed into the compound bonding technology that is applicable to coal powder formation, but all because of with high costs or close the ammonia unstripped gas and fail to apply in fertilizer plant because of the stove vaporizing system of going into that is not suitable for Ammonia Production.Point out in the investigation report as Australian combust molding binding agent in 1969 that pitch and useless starch can be used as the binding agent of combust molding, but these are not cheap, should constantly seek cheap surrogate (Proc.Bien.Conf.Inst.Briquet.Agglom.1971.12).Chinese patent CN 1036033 coal powder formation tackiness agents point out that available slag cement and organic substances such as polyvinyl alcohol and shallow lake thing make the tackiness agent that is used for the process industry moulded coal, this industrial shaping coal can be used for combustion of industrial boiler, but does not see to use it for and go into the furnace gas production of raw-material gas for synthetic ammonia in the Ammonia Production.
Purpose of the present invention then is that seeking a kind of is that the binding agent raw material sources are extensive, and is cheap, powdered coal formation is simple again, moulding coal briquette (rod) ash increases little, and the coal briquette hot strength is good, is suitable for going in the Ammonia Production novel powdered coal organic adhesive forming technology of furnace gas requirement.
The content of powdered coal organic adhesive forming technology of the present invention is as follows with enforcement:
1. the component of organic compound binder is considered by following percentage composition (weight):
Water 30-75%
Starch 15-35%
Sodium tetraborate decahydrate 5-20%
Urea 1-5%
Formaldehyde resin 0.1-1%
2. the blending process of organic compound binder is as follows:
A certain amount of ordinary process water is warming up to 70-80 ℃ at a container internal heating, be warmed up to 90-97 ℃ also stirring in corn, Ipomoea batatas, potato, water caltrop or other crop starch the hot water with the dilution of the water under room temperature back adding said vesse, in this container, add the water-soluble liquid of sodium tetraborate decahydrate and the water-soluble liquid of urea respectively more simultaneously, stirring reaction 30 minutes, to be cooled during to 40 ℃ of left and right sides, add formaldehyde resin and stir required organic compound binder.
3. it is as follows to use this organic compound binder to carry out the technological process of coal powder formation:
With hard coal, have the fine coal (Jiao) of bituminous coal or coke powder in exhausting formula pulverizer, to be crushed to the 20-50 order, add two imperial stirrers subsequently and stir, when stirring, spray into the organic compound binder that has prepared of the 3-10% that accounts for the fine coal total amount continuously.It is fixed that the concrete addition of binding agent is looked the water content of fine coal, generally adds when the water content of fine coal accounts for 15-20% behind the binding agent to begin moulding.To prepare during moulding in the shaper that fine coal adding pressure is 25-45MPa and make inclined to one side sphere or coal rod.Its spheric diameter is looked the Gas-making Furnace of fertilizer plant or the demand of other civilian roasting kiln decides, general 4-6cm; The diameter of coal rod is generally 4cm, length 5-6cm.
The coal briquette of forming makes its moisture content drop to 5% when following after super-dry, can go into the vapourizing furnace gasification of fertilizer plant or enter the domestic burners burning.The drying mode of coal briquette is generally seasoning, dry or other warm air drying in cellar for storing things, stack gas tunnel.Its physicochemical data of coal briquette following (% was measured in coal briquette 150 ℃ of oven dry in baking oven in 4 hours) of making according to above-mentioned technology with the powder of general bituminous coal:
Moisture content 0.4-0.7%
Ash 22-27%
Fugitive constituent 6-10%
Fixed carbon 60-65%
Bulk density 0.8-1.1g/cm
3
The single ball of cold strength 4.5-6.5MPa/
The single ball of hot strength 3.5-5.0MPa/
Thermostability＞99%
As stated above the coal briquette of preparation, moulding through in relevant small fertilizer plant (as nitrogen fertilizer plant of Xibei Chemical Inst of the Ministry of Chemical Industry) industry on probation, can reach the requirement of every gasification index.
Powdered coal organic adhesive forming technology of the present invention is with having compared following advantage at carbonated coal balls that the small fertilizer plant uses at present:
Item compared carbonated coal balls organic adhesive coal briquette
Increase 20-25% 3-5% than original coal ash part
Need carbide furnace (about 80,000 yuan) not need carbide furnace in the phase moulding process
And carbonization technique does not need carbonization technique
Binding agent add-on 20-25% 3-10%
Ton coal powder formation cost 〉=15 yuan≤10 yuan
The required starch of the required lime main raw material of binding agent raw material sources, ten water, four boron
Be subjected to main raw material such as region restriction freight charges acid sodium not to be subjected to ground
Increase the territory restriction
Contain CO+H in the gas making
267-72% 85-91%
Can adapt to coal hard coal hard coal, bituminous coal, coke powder
Balling-up facility investment 130-150 ten thousand Renminbi 30-40 ten thousand Renminbi
By as can be known above-mentioned: compare with carbonated coal balls, it is extensive, cheap that organic adhesive coal briquette of the present invention has the binding agent raw material sources, and binding agent making and powdered coal formation, equipment are simple, simple for production, CO+H in the unstripped gas of gasification back
2Can obviously improve outstanding advantages such as about 20%.As long as buy or produce binding agent for saying in the fertilizer plant that uses carbonated coal balls, can use organic adhesive forming technology of the present invention instead.Current the northern area of China small fertilizer plant lump coal is generally 230-260 unit to the price at factory; Fine coal is 110-140 unit to the price at factory, 120 yuan of price differences per ton, 10 yuan of deduction binding agent expenses per ton, 10 yuan of coal briquette productive expenses.Ton coal briquette cost still is lower than 100 yuan in lump coal.As using 1.2 ten thousand tons in coal with small fertilizer plant's year, the coal foam accounts for 45% and also all utilizes the present invention to be processed into coal briquette calculating, and then year can be saved about 500,000 yuan of Renminbi.As with 1.2 ten thousand tons of NH
4Factory all buys fine coal and calculates by the technology of the present invention moulding, and then year can be saved 1,200,000 yuans.Its economic benefit is very obvious.Say that to China's southern area or away from the small fertilizer plant in colliery because higher to factory's coal price, it will be more remarkable then adopting economic benefit of the present invention.The same reason, the fine coal balling-up that the present invention is used for domestic fuel is produced, and can bring better economy and environmental benefit equally.
Embodiment
One. the preparation of binding agent
60 kilograms water are injected the reactor A that has intensification and whipping appts and are warmed up to 78 ℃, 18 kilograms W-Gums with 10 kilograms tap water in reactor B under room temperature the dilution back add in 78 ℃ the hot water in the reactor A, and stirring is warmed to 95 ℃, again 6 kilograms sodium tetraborate decahydrate is put into simultaneously container C with 3 kilograms water dissolution, 1.7 kilograms urea is put into container D with 1 kilogram water dissolution, respectively two kinds of lysates of container C and container D were added in the reactor A stirring reaction subsequently respectively 30 minutes.Treat when it is cooled to 40 ℃ to add 0.3 kilogram formaldehyde resin stir coal powder formation organic compound binder E.
Two. coal powder formation
It is 20-50 purpose coal dust B that anthracitic fine coal is pulverized in exhausting formula pulverizer A; Coal dust B is sent into two imperial stirrer C with rotary conveyor, while and stir 7% the organic binder bond E that sprays into total pulverized coal amount in the C, and be transported to after continuing to stir among the shaper D of 25MPa pressure; Be processed into the spherical partially coal briquette F of 5cm diameter.With this coal briquette F in utilizing the tunnel cellar for storing things G of flue gas drying dry make its coal briquette moisture content drop to≤5% can send among the vapourizing furnace H of small fertilizer plant gasification and use.
Three. the physical and chemical index of coal briquette and the applicable cases in the industrial gasification stove
1. above-mentioned coal briquette is tested at the physicochemical data of the H of Shaanxi Province small fertilizer plant:
Moisture content 3.7%
Ash 24.2%
Fugitive constituent 9.7%
Fixed carbon 62.4%
Bulk density 0.838/cm
3
The single ball of weight 32g/
The single ball of intensity (cold conditions) 5.1MPa/
The single ball of intensity (hot) 4.0MPa/
Thermostability 99.12%
2.H the coal gas composition after this coal briquette of factory's used for industrial furnace gasifies is as follows:
% CO
2CO H
2N
2O
2
On blow 10.7 29.77 57.1 1.93 0.5
Under blow 8.95 33.6 56.75 0.2 0.5
3. single stove (φ 2260mm gas furnace) gas forming amount: 2800-3000m
3/ h is suitable with the lump coal list stove gas forming amount of this factory.
4. the particle collector dreg discharge amount is the 4-5% of last coal amount.
Four. economic benefit
H factory feed coal is that 200 yuan/t(contains fine coal 35-50% to the price at factory), 140 yuan/t of fine coal price, 20 yuan/t of deduction organic binder bond moulding expense.Then go into stove gas making fine coal per ton and can increase income 40 yuan with this binding agent moulding coal briquette; H factory year is with 20,000 tons in coal, can cut down expenses ten thousand yuan of 28-40 of then annual this factory.Its economic benefit is very obvious.
Claims (5)
1, a kind of organic adhesive forming technology that contains starch that is applicable to coal powder formation.Feature of the present invention is to contain sodium tetraborate decahydrate, urea and formaldehyde resin in the used organic compound binder.
2, organic compound binder as claimed in claim 1, the content that it is characterized in that required sodium tetraborate decahydrate is the 5-20% of binding agent; Required content of urea is the 1-5% of binding agent; The content of required formaldehyde resin is the 0.1-1% of binding agent.
3, organic compound binder as claimed in claim 1 is characterized in that starch can be contained stem tuber or any starch that fruit processes or the mixture of two kinds of starch of the crop of starch by corn, Ipomoea batatas, potato, water caltrop and other.The content of this starch in organic binder bond is 15-35%.
4, organic compound binder as claimed in claim 1 is characterized in that the addition of this organic compound binder in the coal powder formation process is the 3-10% of total pulverized coal amount.
5, organic compound binder as claimed in claim 1 is characterized in that the moulding of this organic compound binder applicable to any powder of hard coal, bituminous coal or coke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93118957 CN1101663A (en) | 1993-10-12 | 1993-10-12 | Powdered coal organic adhesive forming technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93118957 CN1101663A (en) | 1993-10-12 | 1993-10-12 | Powdered coal organic adhesive forming technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1101663A true CN1101663A (en) | 1995-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93118957 Pending CN1101663A (en) | 1993-10-12 | 1993-10-12 | Powdered coal organic adhesive forming technology |
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|---|---|
| CN (1) | CN1101663A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781531A (en) * | 2010-02-27 | 2010-07-21 | 丹江口福安运输有限责任公司 | Ramsbottom carbon powder molding adhesive |
| CN102191102A (en) * | 2010-03-16 | 2011-09-21 | 曲靖市雨明科技有限责任公司 | Bonding agent formula of carburized type cold-hot pressure dual-purpose formed coke |
| CN102796584A (en) * | 2012-08-23 | 2012-11-28 | 金长山 | Environmentally-friendly and energy-saving composite coal and preparation method thereof |
| CN110540848A (en) * | 2019-09-17 | 2019-12-06 | 上海茜昆实业发展有限公司 | High-strength coke and preparation method thereof |
-
1993
- 1993-10-12 CN CN 93118957 patent/CN1101663A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781531A (en) * | 2010-02-27 | 2010-07-21 | 丹江口福安运输有限责任公司 | Ramsbottom carbon powder molding adhesive |
| CN102191102A (en) * | 2010-03-16 | 2011-09-21 | 曲靖市雨明科技有限责任公司 | Bonding agent formula of carburized type cold-hot pressure dual-purpose formed coke |
| CN102796584A (en) * | 2012-08-23 | 2012-11-28 | 金长山 | Environmentally-friendly and energy-saving composite coal and preparation method thereof |
| CN102796584B (en) * | 2012-08-23 | 2014-07-02 | 金长山 | Environmentally-friendly and energy-saving composite coal and preparation method thereof |
| CN110540848A (en) * | 2019-09-17 | 2019-12-06 | 上海茜昆实业发展有限公司 | High-strength coke and preparation method thereof |
| CN110540848B (en) * | 2019-09-17 | 2020-12-08 | 上海茜昆实业发展有限公司 | High-strength coke and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |