CN113522550B - Atomizing nozzle for producing coal water slurry - Google Patents
Atomizing nozzle for producing coal water slurry Download PDFInfo
- Publication number
- CN113522550B CN113522550B CN202110922237.5A CN202110922237A CN113522550B CN 113522550 B CN113522550 B CN 113522550B CN 202110922237 A CN202110922237 A CN 202110922237A CN 113522550 B CN113522550 B CN 113522550B
- Authority
- CN
- China
- Prior art keywords
- nozzle
- flow
- flow channel
- water slurry
- coal water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000002002 slurry Substances 0.000 title claims abstract description 20
- 239000003245 coal Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 22
- 239000001301 oxygen Substances 0.000 abstract description 22
- 229910052760 oxygen Inorganic materials 0.000 abstract description 22
- 238000000889 atomisation Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 239000011449 brick Substances 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 1
- 239000003250 coal slurry Substances 0.000 description 29
- 230000000694 effects Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000002309 gasification Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/14—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with oscillating elements; with intermittent operation
- B05B3/16—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with oscillating elements; with intermittent operation driven or controlled by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
- B05B7/0466—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the central liquid flow towards the peripheral gas flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
- B05B7/0475—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the peripheral gas flow towards the central liquid flow
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
Abstract
The invention relates to the technical field of coal water slurry preparation equipment, and discloses an atomization nozzle for coal water slurry production. The atomizing nozzle for producing the coal water slurry is vertically arranged through the flow guide blocks and divided into two blocks of the vertical arrangement at intervals, so that the direction of changing flow direction in each flow channel is consistent, the flows of oxygen and the coal water slurry in the inner flow channel, the middle flow channel and the outer flow channel firstly strike the lower part of the flow guide blocks to drive the inner nozzle, the middle nozzle and the outer nozzle to swing downwards, then upwards flow and strike the inner wall of each flow channel to drive the inner nozzle, the middle nozzle and the outer nozzle to swing upwards, and the swinging force is transmitted through the bracket, so that the inner nozzle, the middle nozzle and the outer nozzle swing at the same frequency to achieve resonance, the inner nozzle, the middle nozzle and the outer nozzle cannot deviate from left and right sides due to up-down swinging in the use process, and the resonance has the same swing amplitude, the upper side and lower side of swinging of the inner nozzle, the middle nozzle and the outer nozzle cannot deviate, and the service life of a refractory brick cannot be reduced due to the spraying and burning of the nozzle.
Description
Technical Field
The invention relates to the technical field of coal water slurry preparation equipment, in particular to an atomization nozzle for coal water slurry production.
Background
The water-coal-slurry nozzle is key equipment in the water-coal-slurry pressurized gasification technology, the working effect and the service life of the water-coal-slurry pressurized gasification technology determine the working effect of a gasification furnace, the economic benefit of enterprises is affected, the nozzle works in a high-temperature and high-pressure environment, the structure of the water-coal-slurry nozzle is composed of an inner nozzle, a middle nozzle and an outer nozzle which are coaxially sleeved from inside to outside and provided with a streamline front closing end, the water-coal-slurry nozzle is in a three-flow type inner and outer mixed atomization mode, an outer flow channel and an inner flow channel convey high-pressure oxygen, the middle flow channel conveys high-pressure water-coal-slurry, the inner flow channel oxygen and the middle flow channel are mixed with the outer flow channel after being semi-premixed, and the outer flow channel are uniformly atomized and combusted at a nozzle, and a cooling water cavity is arranged at the outer head of the nozzle to protect the nozzle.
In the use process, the coaxiality of the coal water slurry nozzle is easy to deviate, the formed jet flame can obviously deviate in the direction of narrower annular space, and after long-term operation, erosion and high-temperature radiation are formed on the refractory bricks at one side of the deviation.
Disclosure of Invention
The invention provides an atomization nozzle for producing coal water slurry, which has the advantages of no gap deviation and long service life of refractory bricks, and solves the problems of coaxial deviation of nozzles, deviation of sprayed combustion flame and reduction of the service life of refractory bricks.
The invention provides the following technical scheme: the utility model provides an atomizer for coal water slurry production, includes the interior nozzle, the outside coaxial sleeve of interior nozzle is equipped with well nozzle, the outside coaxial sleeve of well nozzle is equipped with outer nozzle, install the support between interior nozzle and the well nozzle, install another support between well nozzle and the outer nozzle, the inner chamber of interior nozzle forms interior runner, form well runner between well nozzle and the interior nozzle, form outer runner between well nozzle and the outer nozzle, in runner, well runner, the external runner in each fixed mounting have the water conservancy diversion piece, the water conservancy diversion piece is vertical on same vertical line.
Preferably, the flow guide blocks are divided into two blocks which are arranged at intervals, and opposite surfaces of the two flow guide blocks are curved surfaces.
Preferably, the width of the flow guiding block is smaller than the diameter of the corresponding flow channel.
Preferably, the pressurizing block is fixedly mounted on the inner surface of the inner nozzle and positioned on the right side of the flow guiding block, the first flow holes are formed in the inner nozzle and matched with the pressurizing block, and the second flow holes are formed in the upper side and the lower side of the middle nozzle and positioned on the right side of the flow guiding block.
The invention has the following beneficial effects:
1. This atomizer is used in coal slurry production, through the vertical setting of water conservancy diversion piece, and divide into two interval settings, make the direction that changes the flow direction in every runner be unanimous, the lower part of water slurry is first strikeed to the flow of interior runner, well runner, interior oxygen and coal slurry in the outer runner, drive interior nozzle, well nozzle, outer nozzle down swing, the upward flow striking each runner inner wall again, drive interior nozzle, well nozzle, outer nozzle up swing, and drive swing force through the support, make interior nozzle, well nozzle, outer nozzle same-frequency swing, reach resonance, make interior nozzle, well nozzle, outer nozzle in the use, because of the upper and lower swing, can not produce the skew of left and right sides, again because resonance, the swing amplitude is the same, interior nozzle, well nozzle, outer nozzle swing can not take place the upside skew, the nozzle blowout burning can not reduce the life of firebrick, and because of the swing of the nozzle, make blowout burning flame coverage wider, further improve the life of firebrick, the blowout is easier to disperse under the swing, and further increase the velocity of flow, the atomizing effect of nozzle is better.
2. The atomizing nozzle for producing the coal water slurry is provided with the first through-hole, and under the cooperation of the pressurizing block, high-pressure oxygen in the inner runner is pressurized at the first through-hole, so that the high-pressure oxygen can be extruded from the first through-hole, enter the middle runner, increase the air content of the coal water slurry in the middle runner, increase the molecular gap of the high-pressure oxygen, enable the high-pressure oxygen to collide with the coal water slurry when being sprayed, enable the impact of liquid drops to be stronger in the crushing atomization effect of the coal water slurry when being sprayed, and further improve the atomization effect of the nozzle when being sprayed.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic side sectional view of the present invention.
In the figure: 1. an inner nozzle; 2. a middle nozzle; 3. an outer nozzle; 4. a bracket; 5. an inner flow passage; 6. a middle runner; 7. an outer flow passage; 8. a flow guiding block; 9. pressurizing the block; 10. a first flow hole; 11. and a second flow hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, an atomizer for producing coal water slurry, comprising an inner nozzle 1, a middle nozzle 2 is coaxially sleeved outside the inner nozzle 1, an outer nozzle 3 is coaxially sleeved outside the middle nozzle 2, a bracket 4 is installed between the inner nozzle 1 and the middle nozzle 2, another bracket 4 is installed between the middle nozzle 2 and the outer nozzle 3, an inner runner 5 is formed in an inner cavity of the inner nozzle 1, a middle runner 6 is formed between the middle nozzle 2 and the inner nozzle 1, an outer runner 7 is formed between the middle nozzle 2 and the outer nozzle 3, guide blocks 8 are respectively and fixedly installed in the inner runner 5, the middle runner 6 and the outer runner 7, the guide blocks 8 are vertically installed on the same vertical line, the guide blocks 8 are divided into two blocks of space, opposite surfaces of the two guide blocks 8 are curved surfaces, so that the changed flow directions in each runner are consistent, the flows of oxygen and coal water slurry in the inner runner 5, the middle runner 6 and the outer runner 7 firstly strike the lower part of the guide blocks 8, the inner nozzle 1, the middle nozzle 2 and the outer nozzle 3 are driven to swing downwards and then flow upwards to impact the inner wall of each runner, the inner nozzle 1, the middle nozzle 2 and the outer nozzle 3 are driven to swing upwards, and the swinging force is transmitted through the bracket 4, so that the inner nozzle 1, the middle nozzle 2 and the outer nozzle 3 swing at the same frequency to reach resonance, the inner nozzle 1, the middle nozzle 2 and the outer nozzle 3 do not generate left-right side deflection due to vertical swinging in the use process, the upper-lower side deflection does not occur due to resonance when the inner nozzle 1, the middle nozzle 2 and the outer nozzle 3 swing, the service life of refractory bricks is not reduced when the nozzles spray out and burn, the coverage range of sprayed burning flame is wider due to the swinging of the nozzles, the service life of the refractory bricks is further prolonged, sprayed liquid is easier to disperse under the swinging, the flow speed is further increased, the atomization effect of the nozzle is better, the width of the flow guiding block 8 is smaller than the diameter of the corresponding flow channel, after the high-pressure oxygen and the water coal slurry strike the flow guiding block 8, the high-pressure oxygen and the water coal slurry can flow through the flow guiding block 8 at high speed from the flow guiding interval and the two sides of the flow guiding block 8, negative pressure is formed on the back surface of the flow guiding block 8, the high-pressure oxygen and the water coal slurry are influenced, the flow direction is changed, the high-pressure oxygen entering from the first circulation hole 10 and the water coal slurry entering from the second circulation hole 11 are impacted and crushed and mixed at different angles, the effect of overcoming the surface tension of the liquid is good at the outlet, the mixed atomization effect is good, the pressurizing block 9 is fixedly arranged on the inner surface of the inner nozzle 1 and positioned on the right side of the flow guiding block 8, the first circulation hole 10 is formed by the inner nozzle 1 and the pressurizing block 9, the upper side and the lower side of the middle nozzle 2 and the right side of the flow guiding block 8 are provided with the second flow guiding hole 11, so that high-pressure oxygen in the inner flow channel 5 is pressed at the first flow guiding hole 10 and can be extruded out of the first flow guiding hole 10, enter the middle flow channel 6, the air content of the water-coal-slurry in the middle flow channel 6 is increased, the molecular gap of the water-coal-slurry is increased, the collision atomization effect is better during ejection, the water-coal-slurry in the middle flow channel 6 is locally pressurized under the flow guiding acceleration of the flow guiding block 8, the water-coal-slurry enters the outer flow channel 7 through the second flow guiding hole 11, the water-coal-slurry is crushed by high-pressure oxygen in the outer flow channel 7, the water-coal-slurry collides with the ejected water-coal-slurry during ejection, compared with the crushing of wind to the surface tension of liquid, the crushing atomization effect of the water-coal-slurry caused by the collision of the liquid drops is stronger, and the atomization effect of the nozzle is further improved.
The working principle of the nozzle of the invention is as follows:
The high-pressure oxygen flows and is conveyed in the inner runner 5 and the outer runner 7, the high-pressure water coal slurry is conveyed in the middle runner 6, in the conveying process, the high-pressure oxygen and the high-pressure water coal slurry vertically towards the top and the bottom in the nozzle can be guided by the corresponding guide blocks 8, firstly, the lower block of the guide blocks 8 is impacted, the nozzle has downward swing amplitude, then the upper surface of the corresponding nozzle is impacted along the interval guide of the guide blocks 8, the nozzle has upward swing amplitude, the inner nozzle 1, the middle nozzle 2 and the outer nozzle 3 swing and mutually drive the swing force to achieve the resonance effect of the same-frequency swing, the gaps among the inner nozzle 1, the middle nozzle 2 and the outer nozzle 3 can not deviate, the flow speed of the high-pressure oxygen and the water-coal-slurry is increased when the high-pressure oxygen and the water-coal-slurry strike the flow guiding block 8, after the high-pressure oxygen and the water-coal-slurry flow pass through the flow guiding block 8, the flow direction of part of the high-pressure oxygen and the water-coal-slurry is changed, the high-pressure air in the inner flow channel 5 can enter the middle flow channel 6 to be mixed with the water-coal-slurry through the first flow hole 10 under the converging and pressurizing action of the pressurizing block 9, the flow direction of the water-coal-slurry at the back of the flow guiding block 8 in the middle flow channel 6 is changed, the high-pressure oxygen entering from the first flow hole 10 is collided and mixed, the water-coal-slurry in the middle flow channel 6 enters the outer flow channel 7 through the second flow hole 11 under the accelerating guide of the flow guiding block 8, and is crushed and mixed, and atomized at the outlet.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a coal water slurry production is with atomizer, includes interior nozzle (1), its characterized in that: the inner nozzle (1) is coaxially sleeved with a middle nozzle (2), the outer part of the middle nozzle (2) is coaxially sleeved with an outer nozzle (3), a bracket (4) is arranged between the inner nozzle (1) and the middle nozzle (2), another bracket (4) is arranged between the middle nozzle (2) and the outer nozzle (3), an inner flow channel (5) is formed in an inner cavity of the inner nozzle (1), a middle flow channel (6) is formed between the middle nozzle (2) and the inner nozzle (1), an outer flow channel (7) is formed between the middle nozzle (2) and the outer nozzle (3), guide blocks (8) are respectively fixedly arranged in the inner flow channel (5), the middle flow channel (6) and the outer flow channel (7), and the guide blocks (8) are vertically arranged on the same vertical line;
The flow guide blocks (8) are divided into two blocks which are arranged at intervals, and the opposite surfaces of the two flow guide blocks (8) are curved surfaces, so that the direction of the changed flow direction of the fluid in each flow channel is consistent;
the inner surface of the inner nozzle (1) is fixedly provided with a pressurizing block (9) positioned on the right side of the flow guiding block (8), a first flow hole (10) is formed in the inner nozzle (1) and matched with the pressurizing block (9), and a second flow hole (11) is formed in the upper side and the lower side of the middle nozzle (2) and positioned on the right side of the flow guiding block (8).
2. The atomizing nozzle for producing coal water slurry according to claim 1, wherein: the width of the flow guide block (8) is smaller than the diameter of the corresponding flow channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110922237.5A CN113522550B (en) | 2021-08-12 | 2021-08-12 | Atomizing nozzle for producing coal water slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110922237.5A CN113522550B (en) | 2021-08-12 | 2021-08-12 | Atomizing nozzle for producing coal water slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113522550A CN113522550A (en) | 2021-10-22 |
| CN113522550B true CN113522550B (en) | 2024-05-31 |
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ID=78090925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110922237.5A Active CN113522550B (en) | 2021-08-12 | 2021-08-12 | Atomizing nozzle for producing coal water slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113522550B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0268432A2 (en) * | 1986-11-13 | 1988-05-25 | National Research Council Of Canada | An atomizing nozzle assembly |
| CN202137071U (en) * | 2011-06-30 | 2012-02-08 | 神华集团有限责任公司 | Gasification nozzle |
| CN102492479A (en) * | 2011-12-28 | 2012-06-13 | 上海锅炉厂有限公司 | Three-channel slurry fuel gasification burner |
| CN205035330U (en) * | 2015-10-22 | 2016-02-17 | 中国石油大学(华东) | Take inside and outside multistage gasification nozzle of coal slurry that mixes of three channels of swirler |
| CN212349165U (en) * | 2020-03-20 | 2021-01-15 | 北京国利衡清洁能源科技(集团)有限公司 | Gasifying agent and water mixed atomizing nozzle |
-
2021
- 2021-08-12 CN CN202110922237.5A patent/CN113522550B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0268432A2 (en) * | 1986-11-13 | 1988-05-25 | National Research Council Of Canada | An atomizing nozzle assembly |
| CN202137071U (en) * | 2011-06-30 | 2012-02-08 | 神华集团有限责任公司 | Gasification nozzle |
| CN102492479A (en) * | 2011-12-28 | 2012-06-13 | 上海锅炉厂有限公司 | Three-channel slurry fuel gasification burner |
| CN205035330U (en) * | 2015-10-22 | 2016-02-17 | 中国石油大学(华东) | Take inside and outside multistage gasification nozzle of coal slurry that mixes of three channels of swirler |
| CN212349165U (en) * | 2020-03-20 | 2021-01-15 | 北京国利衡清洁能源科技(集团)有限公司 | Gasifying agent and water mixed atomizing nozzle |
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| Publication number | Publication date |
|---|---|
| CN113522550A (en) | 2021-10-22 |
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