CN102876408B - Method for improving stability of coke water slurry and device - Google Patents
Method for improving stability of coke water slurry and device Download PDFInfo
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- CN102876408B CN102876408B CN201210334106.6A CN201210334106A CN102876408B CN 102876408 B CN102876408 B CN 102876408B CN 201210334106 A CN201210334106 A CN 201210334106A CN 102876408 B CN102876408 B CN 102876408B
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Abstract
The invention relates to preparation and high-efficiency utilization of fuel and aims to provide a method for improving the stability of coke water slurry and a device. The method comprises the following steps of: adding a foaming agent into the coke water slurry and initially and uniformly mixing; and spraying air into the coke water slurry by using a bubble generation device which is arranged at the bottom of a storage tank or a stirring tank and forming small bubbles of which the diameter is 0.5 to 1mm. According to the device, the bubble generation device is arranged at the bottom of the storage tank or the stirring tank. The bubble generation device and the method are simple and feasible; by the device and the method, the stability of the coke water slurry is improved greatly, the function of stirring the slurry can be exerted, and the application range is wide. The adopted foaming agent is low in price and can be obtained easily. Moreover, the coke water slurry with a large amount of small bubbles can be conveyed by a pipeline and atomized and burnt conveniently.
Description
Technical field
The invention belongs to preparation of fuel and efficiently utilize field, being specifically related to the method and apparatus that the burnt slurry of a kind of water improves stability.
Background technology
The burnt slurry of water is a kind of paste liquid fuel being comprised of refinery coke, water and chemical additive, and the similar heavy oil of its flow characteristics is a kind of novel for oil fuel, can be used as the power fuel of station boiler, industrial furnace and the vaporising fuel of vapourizing furnace.
Refinery coke is crude oil after distillation is separating of oil by weight matter, and mink cell focus is again through the process of hot tearing, the product being transformed.From the appearance, refinery coke is black in irregular shape block (or particle), and tool multi-pore structure, has metalluster.Refinery coke carbon content, about 90% left and right, has the advantages that calorific value is high, therefore can be used as fuel.Fuel type refinery coke adopts circulating fluidized bed technique more at present, but investment and working cost are quite high.
The coal water slurry of being made by coal, water and additive is a kind of novel for oil fuel, can as oil, preserve, conveying and spray burning, and have the advantages such as efficiency of combustion is high, pollutant emission is low, and Yi China better applies.Along with the development of COAL-WATER SLURRY TECHNOLOGY, with refinery coke slurrying, also get more and more people's extensive concerning, the additive by the refinery coke of 60-70% left and right, the water of 30-40% left and right and 0.5-1% left and right is mixed and made into the burnt slurry of water.The burnt slurry of water has acted on the advantage of coal water slurry, be a kind of clean and effective for fluid fluid fuel.
The index of weighing water coke slurry fuel quality has the sludge forming performance (concentration) of the burnt slurry of water, water burnt slurry stability and rheological.Have scholar both at home and abroad to the sludge forming performance of the burnt slurry of water, water burnt slurry stability and rheological and affect water Jiao slurry property qualitative factor and study, physicochemical property, size-grade distribution and additive as intrinsic in refinery coke and the matching of refinery coke etc.
Research and application result show, the slurry concentration of the burnt slurry of water is higher, can reach 70%, and there is good flow characteristics, a kind of good power fuel and vaporising fuel, but the less stable of the burnt slurry of water, the burnt slurry of some water just there will be deposited phenomenon in several hours or one day, with 3 months in there is not hard-caked sediment basic demand differ greatly, seriously hindered the development of water coke slurry fuel and further applied.
Therefore, how the low-cost stability tool that effectively improves water coke slurry fuel is of great significance.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the deficiency in the burnt slurry preparation of existing water or storage process, provides a kind of and at the burnt slurry of water storage process, improves the method and apparatus of stability for water burnt slurry preparation factory or application factory.
For technical solution problem, the present invention is achieved by the following technical solutions:
A kind of method that improves the burnt slurry of water stability is provided, and is in the burnt slurry of water, to add pore forming material and complete tentatively to mix, and pore forming material is that anion surfactant and the mass percent that accounts for mixture are 0.03%-0.05%; The bubble generator that storage tank or stirred pot bottom are located in utilization sprays air and forms the micro-bubble that diameter is 0.5～1mm in the burnt slurry of water.
In the present invention, described pore forming material is at least one in sodium lauryl sulphate or α-sodium olefin sulfonate.
In the present invention, the burnt slurry of described water consists of 60～70% refinery coke, 30～40% water and 0.5～1% additive by mass percent and forms, and additive is sulfonated lignin.
In the present invention, described pore forming material is in the burnt slurry of water preparation process, to add the burnt slurry of water, or is added in the burnt slurry of water in storage tank or stirred pot.
In the present invention, described injection air also forms the intermitten service that is operating as of bubble, and the time of each run is 20～30 minutes.
In the present invention, described bubble generator comprises many groups comb or the circle pipe being arranged at the bottom of tank, between comb or circle pipe, by pipe connecting, communicates; The inlet mouth of comb or circle pipe is connected to compressor, and the pressurized air of 0.1～0.4MPa is provided by compressor.
In the present invention, at the bottom of described comb is arranged in cross section and is the storage tank of square or rectangle or the tank of stirred pot; At the bottom of described circle pipe is arranged in the tank that cross section is circular storage tank or stirred pot.
In the present invention, have some groups for spraying the aperture of air on described circle pipe or comb, every 3 apertures are one group; Each is organized on the same cross section that aperture is positioned at circle pipe or comb, the aperture in the middle of being wherein positioned at towards directly over offer, the radially angle between adjacent aperture is 20～30 °.
The present invention further provides a kind ofly for realizing the device of preceding method, comprised for storage tank or the stirred pot of the burnt slurry of splendid attire water, in the bottom of storage tank or stirred pot, be provided with bubble generator; This bubble generator comprises many groups comb or the circle pipe being arranged at the bottom of tank, between comb or circle pipe, by pipe connecting, communicates; The inlet mouth of comb or circle pipe is connected to compressor, and the pressurized air of 0.1～0.4MPa is provided by compressor; On described circle pipe or comb, have some groups for spraying the aperture of air, every 3 apertures are one group; Each is organized on the same cross section that aperture is positioned at circle pipe or comb, the aperture in the middle of being wherein positioned at towards directly over offer, the radially angle between adjacent aperture is 20～40 °.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention utilizes pressurized air by simple bubble generator is set, and makes to be full of micro-bubble in the burnt slurry of water, increases the steric hindrance that moves down of solid phase particles in slurries, improves the stability of fuel slurry.
Bubble assembly and method that the present invention adopts are simple, do not change the original character of the burnt slurry of water, and micro-bubble is suspended in the precipitation that can effectively slow down solid phase particles thing in slurries, increases substantially the stability of the burnt slurry of water, slurry is had to stirring action simultaneously.The relations such as the fuel type of the burnt slurry of action effect and water, additive are little, therefore applied widely.The pore forming material adopting is the anion surfactants such as conventional sodium lauryl sulphate and α-sodium olefin sulfonate, cheap, easily obtains.In addition the burnt slurry of water that, has a large amount of micro-bubbles is more conducive to pipeline and carries and spray burning.
Accompanying drawing explanation
The bleed rate of the burnt slurry of Fig. 1 water is with the variation of gassing time.
The rate of pouring out of the burnt slurry of Fig. 2 water is with the variation of gassing time.
The bleed rate of the burnt slurry of Fig. 3 water is with the variation of pore forming material content.
The rate of pouring out of the burnt slurry of Fig. 4 water is with the variation of pore forming material content.
Fig. 5 is the burnt schematic diagram of starching stabilising method and device of water in the present invention.
Fig. 6 is the bubble generator schematic diagram of circle form of tubes.
Fig. 7 is the bubble generator schematic diagram of comb form.
Fig. 8 is the aperture distribution schematic diagram of giving vent to anger on bubble generating pipe.
Reference numeral: the burnt slurry of 1 water, 2 storage tanks or stirred pot, 3 bubbles, 4 bubble generators (pipeloop or pipe row), 5 pipe connectings.
Embodiment
Below in conjunction with accompanying drawing, enforcement of the present invention is described.
For realizing the stable device of the burnt slurry of water, comprise for storage tank or the stirred pot 2 of the burnt slurry 1 of splendid attire water, in the bottom of storage tank or stirred pot 2, be provided with bubble generator 4; This bubble generator 4 comprises many groups comb or the circle pipe being arranged at the bottom of tank, between comb or circle pipe, by pipe connecting 5, communicates; The inlet mouth of comb or circle pipe is connected to compressor, and the pressurized air of 0.1～0.4MPa is provided by compressor; On described circle pipe or comb, have some groups for spraying air and forming the aperture of bubble 3, every 3 apertures are one group; Each is organized on the same cross section that aperture is positioned at circle pipe or comb, the aperture in the middle of being wherein positioned at towards directly over offer, the radially angle between adjacent aperture is 20～30 °.
Before bubble generator 4 work, in the burnt slurry 1 of water, must add pore forming material sodium lauryl sulphate or α-sodium olefin sulfonate, and tentatively mix with virgin pulp liquid.Adding of pore forming material can complete in the burnt slurry preparation of water factory, also can add 2 li of terminal user's stokehold delivery system or storage tank or stirred pots.In tank, fill after the burnt slurry of water containing pore forming material, start compressor, make pressurized air enter bubble generator 4, and utilize its aperture that blast injection is entered in slurries, under the cooperation of pore forming material, can in slurries, form a large amount of small bubbles.Bubble evenly suspends and is distributed in the burnt slurry 1 of water like this, by steric effect, effectively slows down the precipitation of solid phase particles thing, improves the stability of the burnt slurry of water.
Spurt into pressurized air in slurries except forming bubble, the burnt slurry 1 of water is also had to stirring homogenization, improve the mobility of the burnt slurry 1 of water.
Bubble generator 4 is periodic operation, and the time can require to determine according to the quality of the burnt slurry 1 of water and user's storage time, and the each run time is 20-30 minute.
Application example of the present invention:
Experiment selects Kingsoft petrochemical industry refinery coke to prepare the burnt slurry of water, and refinery coke specificity analysis is as shown in table 1.
The technical analysis of table 1 refinery coke and ultimate analysis
The burnt slurry of water of preparation is used lignosulfonic acid dipersant, selects two kinds of anion surfactants: sodium lauryl sulphate (K12) and α-sodium olefin sulfonate (AOS) are made pore forming material.Adopt bleed rate and pour out rate (national standard of the burnt slurry of test water stability) as evaluation method.Bleed rate: the burnt slurry of water preparing is after certain hour, and one deck clear water can be separated out in surface, the ratio of total Water in the burnt slurry of this part clear water and water, bleed rate is lower, and stability is better; Pour out rate: the burnt slurry of water preparing is after certain hour, and the burnt slurry of the quantity that can freely pour out and water total amount ratio, pours out rate higher, and stability is better from bottle.
From Fig. 1 and Fig. 2, the burnt slurry of water prepared after 15 days, be about 7%, and the minimum bleed rate of the burnt slurry of air-bubble can be down to 4% left and right without the burnt eduction rate of starching of air-bubble; Without the rate of pouring out of the burnt slurry of air-bubble, only have 30% and the burnt slurry of air-bubble maximum is poured out rate and can be increased to more than 80%.
Pore forming material is anion surfactant, and the mass percent that accounts for mixture is 0.03%-0.05%.But from Fig. 3 and Fig. 4, no matter use that pore forming material, when content is 0.03%, stability is best.Illustrate and add too much pore forming material not have help to slurry stability, too much pore forming material can produce too intensive foaming, between bubble, easily mutually combines, and forms the larger unstable bubble of volume.
Claims (5)
1. a method that improves the burnt slurry of water stability, is characterized in that, to adding pore forming material and complete tentatively in the burnt slurry of water, mixes, and pore forming material is that anion surfactant and the mass percent that accounts for mixture are 0.03%-0.05%; The bubble generator that storage tank or stirred pot bottom are located in utilization sprays air and forms the micro-bubble that diameter is 0.5～1mm in the burnt slurry of water;
The burnt slurry of described water consists of 60～70% refinery coke, 30～40% water and 0.5～1% additive by mass percent and forms, and additive is sulfonated lignin, and the content sum of each component is 100%;
Described pore forming material is at least one in sodium lauryl sulphate or α-sodium olefin sulfonate; Be in the burnt slurry of water preparation process, to add the burnt slurry of water, or be added in the burnt slurry of water in storage tank or stirred pot.
2. method according to claim 1, is characterized in that, described injection air also forms the intermitten service that is operating as of bubble, and the time of each run is 20～30 minutes.
3. method according to claim 1, is characterized in that, described bubble generator comprises many groups comb or the circle pipe being arranged at the bottom of tank, between comb or circle pipe, by pipe connecting, communicates; The inlet mouth of comb or circle pipe is connected to compressor, and the pressurized air of 0.1～0.4MPa is provided by compressor.
4. method according to claim 3, is characterized in that, at the bottom of described comb is arranged in cross section and is the storage tank of square or rectangle or the tank of stirred pot; At the bottom of described circle pipe is arranged in the tank that cross section is circular storage tank or stirred pot.
5. method according to claim 3, is characterized in that, has some groups for spraying the aperture of air on described circle pipe or comb, and every 3 apertures are one group; Each is organized on the same cross section that aperture is positioned at circle pipe or comb, the aperture in the middle of being wherein positioned at towards directly over offer, the radially angle between adjacent aperture is 20～40 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210334106.6A CN102876408B (en) | 2012-09-11 | 2012-09-11 | Method for improving stability of coke water slurry and device |
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| CN201210334106.6A CN102876408B (en) | 2012-09-11 | 2012-09-11 | Method for improving stability of coke water slurry and device |
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| CN102876408B true CN102876408B (en) | 2014-11-05 |
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| JP6696272B2 (en) * | 2016-04-08 | 2020-05-20 | コニカミノルタ株式会社 | Fixing device and image forming device |
| CN106381180A (en) * | 2016-10-08 | 2017-02-08 | 浙江大学 | Method for preparing gas-bubble water-coal slurry or water-coke slurry by utilizing sludge and organic waste liquid through fermentation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7780581A (en) * | 1980-11-28 | 1982-06-03 | Kao Soap Co. Ltd. | Preparing aqueous coal slurry |
| CN101235940A (en) * | 2007-06-22 | 2008-08-06 | 浙江科技学院科技开发中心 | Surface film resistance reduction method and viscoplastic material pipe-line transportation technology |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7780581A (en) * | 1980-11-28 | 1982-06-03 | Kao Soap Co. Ltd. | Preparing aqueous coal slurry |
| JPS5792089A (en) * | 1980-11-28 | 1982-06-08 | Kao Corp | Coal-water slurry and its production |
| CN101235940A (en) * | 2007-06-22 | 2008-08-06 | 浙江科技学院科技开发中心 | Surface film resistance reduction method and viscoplastic material pipe-line transportation technology |
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