CN102876408A - 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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- CN102876408A CN102876408A CN2012103341066A CN201210334106A CN102876408A CN 102876408 A CN102876408 A CN 102876408A CN 2012103341066 A CN2012103341066 A CN 2012103341066A CN 201210334106 A CN201210334106 A CN 201210334106A CN 102876408 A CN102876408 A CN 102876408A
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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 the field, be 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 that is 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 with weight matter, and mink cell focus is again through the process of hot tearing, the product that is transformed.From the appearance, refinery coke is black in irregular shape block (or particle), and the tool multi-pore structure has metalluster.The refinery coke carbon content has the high characteristics of calorific value about about 90%, therefore can be used as fuel.The 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 preserve as oil, conveying and spray burning, and have the advantages such as efficiency of combustion is high, pollutant emission is low, better applies in China.Along with the development of COAL-WATER SLURRY TECHNOLOGY, also get more and more people's extensive concerning with refinery coke slurrying, namely be mixed and made into the burnt slurry of water by the refinery coke about 60-70%, water about 30-40% and the additive about 0.5-1%.The burnt slurry of water has acted on the advantage of coal water slurry, be a kind of clean and effective for the 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.Both at home and abroad existing scholar is on sludge forming performance, water burnt slurry stability and the rheological of the burnt slurry of water and affect the burnt factor of starching character of water and study, such as the matching of the intrinsic physicochemical property of refinery coke, size-grade distribution and additive and refinery coke etc.
Research and application result show, the slurry concentration of the burnt slurry of water is higher, can reach 70%, and has a preferably flow characteristics, a kind of preferably power fuel and vaporising fuel, but the less stable of the burnt slurry of water, the burnt slurry of some water deposited phenomenon will occur in several hours or one day, with 3 months in hard-caked sediment do not occur basic demand differ greatly, seriously hindered the development of water coke slurry fuel and further applied.
Therefore, how the stable tool of low-cost Effective Raise 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 the storage process, provides a kind of for water burnt slurry preparation factory or use stability improves in factory at the burnt slurry of water storage process method and apparatus.
Be the technical solution problem, the present invention is achieved by the following technical solutions:
A kind of method that improves the burnt slurry stability of water is provided, and is to add pore forming material and finish tentatively to mix in the burnt slurry of water, 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 is located in utilization injection air and form the micro-bubble that diameter is 0.5～1mm in the burnt slurry of water.
Among the present invention, described pore forming material is at least a in sodium lauryl sulphate or the α-sodium olefin sulfonate.
Among 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.
Among the present invention, described pore forming material is to add the burnt slurry of entry in the burnt slurry of water preparation process, perhaps is added in the burnt slurry of water in storage tank or the stirred pot.
Among 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.
Among the present invention, described bubble generator comprises many groups comb or the circle pipe that is arranged at the bottom of the tank, communicates by pipe connecting between comb or the circle pipe; 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.
Among the present invention, described comb is arranged at the bottom of the tank of storage tank that the cross section is square or rectangle or stirred pot; Described circle pipe is arranged at the bottom of the tank of cross section for circular storage tank or stirred pot.
Among the present invention, have the some groups of apertures that are used for injection air on described circle pipe or the comb, per 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 wherein being positioned at towards directly over offer, the radially angle between the adjacent aperture is 20～30 °.
The present invention further provides a kind of device for realizing preceding method, comprised for storage tank or the stirred pot of the burnt slurry of splendid attire water, be provided with bubble generator in the bottom of storage tank or stirred pot; This bubble generator comprises many groups comb or the circle pipe that is arranged at the bottom of the tank, communicates by pipe connecting between comb or the circle pipe; 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; Have the some groups of apertures that are used for injection air on described circle pipe or the comb, per 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 wherein being positioned at towards directly over offer, the radially angle between the 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 in the burnt slurry of water to be full of micro-bubble, increases the steric hindrance that moves down of solid phase particles in the 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 the solid phase particles thing in the slurries, increases substantially the stability of the burnt slurry of water, simultaneously slurry is had stirring action.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 that adopts is for anion surfactants such as sodium lauryl sulphate commonly used and α-sodium olefin sulfonates, and is cheap, easily obtains.In addition, the burnt slurry of water that has a large amount of micro-bubbles more is conducive to pipeline and carries and spray burning.
Description of drawings
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 among 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 the bubble generation 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.
Be used for realizing that the stable device of the burnt slurry of water comprises for storage tank or the stirred pot 2 of the burnt slurry 1 of splendid attire water, be provided with bubble generator 4 in the bottom of storage tank or stirred pot 2; This bubble generator 4 comprises many groups comb or the circle pipe that is arranged at the bottom of the tank, communicates by pipe connecting 5 between comb or the circle pipe; 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; Have the some groups of apertures that are used for injection air and form bubble 3 on described circle pipe or the comb, per 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 wherein being positioned at towards directly over offer, the radially angle between the adjacent aperture is 20～30 °.
Before bubble generator 4 work, must add pore forming material sodium lauryl sulphate or α-sodium olefin sulfonate in the burnt slurry 1 of water, and tentatively mix with virgin pulp liquid.The adding of pore forming material can be finished in the burnt slurry preparation of water factory, also can be in terminal user's stokehold delivery system or storage tank or 2 li addings of stirred pot.After filling the burnt slurry of the water that contains pore forming material in the tank, start compressor, make pressurized air enter bubble generator 4, and utilize its aperture that blast injection is entered in the 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 the slurries except forming bubble, the burnt slurry 1 of water is also had the stirring homogenization, improve the flowability of the burnt slurry 1 of water.
Application example of the present invention:
Experiment selects Kingsoft petrochemical industry refinery coke to prepare the burnt slurry of water, and the 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 the water of preparation uses the lignosulfonic acid dipersant, and select two kinds of anion surfactants: sodium lauryl sulphate (K12) and α-sodium olefin sulfonate (AOS) are made pore forming material.Adopt the bleed rate and pour out rate (national standard of the burnt slurry stability of test water) as evaluation method.The bleed rate: the burnt slurry of the water for preparing is behind the process certain hour, and one deck clear water can be separated out in the surface, the ratio of Total Water in the burnt slurry of this part clear water and water, and the bleed rate is lower, and stability is better; Pour out rate: the burnt slurry of the water for preparing is behind the process certain hour, and the burnt slurry of the quantity that can freely pour out from bottle and water total amount ratio is poured out rate higher, and stability is better.
By Fig. 1 and Fig. 2 as seen, after the burnt slurry of water prepares 15 days, be about 7% without the eduction rate of the burnt slurry of air-bubble, and the minimum bleed rate of the burnt slurry of air-bubble can be down to about 4%; Only have 30% and the burnt slurry of air-bubble maximum is poured out rate and can be increased to more than 80% without the rate of pouring out of the burnt slurry of air-bubble.
Pore forming material is anion surfactant, and the mass percent that accounts for mixture is 0.03%-0.05%.But by Fig. 3 and Fig. 4 as seen, no matter use the sort of pore forming material, stability is best when content is 0.03%.Illustrate that adding too much pore forming material does not have help to slurry stability, too much pore forming material can produce too intensive foaming, easily mutually combines between bubble, forms the larger unstable bubble of volume.
Claims (9)
1. a method that improves the burnt slurry stability of water is characterized in that, adds pore forming material and finish tentatively in the burnt slurry of water 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 is located in utilization injection air and form the micro-bubble that diameter is 0.5～1mm in the burnt slurry of water.
2. method according to claim 1 is characterized in that, described pore forming material is at least a in sodium lauryl sulphate or the α-sodium olefin sulfonate.
3. method according to claim 1 is characterized in that, 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.
4. method according to claim 1 is characterized in that, described pore forming material is to add the burnt slurry of entry in the burnt slurry of water preparation process, perhaps is added in the burnt slurry of water in storage tank or the stirred pot.
5. according to claim 1 to the method described in 4 any one, it 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.
6. according to claim 1 to the method described in 4 any one, it is characterized in that, described bubble generator comprises many groups comb or the circle pipe that is arranged at the bottom of the tank, communicates by pipe connecting between comb or the circle pipe; 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.
7. method according to claim 6 is characterized in that, described comb is arranged at the bottom of the tank of storage tank that the cross section is square or rectangle or stirred pot; Described circle pipe is arranged at the bottom of the tank of cross section for circular storage tank or stirred pot.
8. method according to claim 6 is characterized in that, has the some groups of apertures that are used for injection air on described circle pipe or the comb, and per 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 wherein being positioned at towards directly over offer, the radially angle between the adjacent aperture is 20～40 °.
9. a device that is used for realizing the described method of claim 1 comprises for storage tank or the stirred pot of the burnt slurry of splendid attire water, it is characterized in that, is provided with bubble generator in the bottom of storage tank or stirred pot; This bubble generator comprises many groups comb or the circle pipe that is arranged at the bottom of the tank, communicates by pipe connecting between comb or the circle pipe; 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; Have the some groups of apertures that are used for injection air on described circle pipe or the comb, per 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 wherein being positioned at towards directly over offer, the radially angle between the adjacent aperture is 20～30 °.
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107272384A (en) * | 2016-04-08 | 2017-10-20 | 柯尼卡美能达株式会社 | Fixing device and image processing system |
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 |
-
2012
- 2012-09-11 CN CN201210334106.6A patent/CN102876408B/en active Active
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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107272384A (en) * | 2016-04-08 | 2017-10-20 | 柯尼卡美能达株式会社 | Fixing device and image processing system |
| 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 |
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| CN102876408B (en) | 2014-11-05 |
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