CN101760213A - Rotational flow mixing device for coal distillation furnace - Google Patents
Rotational flow mixing device for coal distillation furnace Download PDFInfo
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- CN101760213A CN101760213A CN200910252428A CN200910252428A CN101760213A CN 101760213 A CN101760213 A CN 101760213A CN 200910252428 A CN200910252428 A CN 200910252428A CN 200910252428 A CN200910252428 A CN 200910252428A CN 101760213 A CN101760213 A CN 101760213A
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Abstract
The invention discloses a rotational flow mixing device for a coal distillation furnace, which comprises a gas pipeline and rotational flow vanes, wherein the gas pipeline introduces cold air or hot flue gas into a mixing chamber; a plurality of the rotational flow vanes are arranged along the peripheral direction of a gas outlet of the gas pipeline, and a plurality of vane structures form a certain angle with the flowing direction of airflow; and a plane where the gas outlet of the gas pipeline is positioned is positioned outside a plane where the inner wall of the mixing chamber is positioned. In the rotational flow mixing device, the pipe mouth is provided with the rotational flow vanes, because gas generates rotational flow at the outlet, local low air pressure is formed at the pipe mouth and has the function of a sealing gasket on the gas in the mixing chamber, and the safety of the device is greatly improved.
Description
Technical field
The present invention relates to a kind of dry distillation of coal device, relate in particular to a kind of rotational flow mixing device of coal carbonization furnace.
Background technology
Destructive distillation is the reaction process of solid or organism thermal degradation under the secluding air condition.Pyrogenous result generates all gases, steam and solid residue.The mixture of gas and steam is divided into gas and liquid after cooling.Destructive distillation is human a kind of production process of being familiar with and adopting very early, as destructive distillation timber system charcoal, obtains another name for (methyl alcohol), wood vinegar etc. simultaneously.In the chemical process of coal, destructive distillation is an important method always.Coal is through after the destructive distillation, and the composition of raw material and state of aggregation all will change, and solid-state in the product, gaseous state and fluent meterial have, and can obtain semicoke, coal tar, virgin ammonia liquor and coke(oven)gas.In general, hydrogenous coal is meant the raw coal of water content more than 15%, and low-temperature pyrolysis is meant that pyrolysis temperature is controlled at the method for destructive distillation that is about about 450-500 ℃.
It is the industrial typical method that has adopted that Lu Qi-Si Pierre is covered this low-temperature pyrolysis method, and this method adopts gaseous heat-carrier internal heat type vertical continuous stove, and this lurgi gasifier is commonly called as three sections stoves in China, promptly comprises dryer section, retort section and cooling section three parts from top to down.Brown coal or by the coal cinder of brown coal compression moulding (particle diameter from top to bottom moves about 25～60mm), directly contacts with the burning gas adverse current and is heated.The water content of furnace roof raw material is higher, removes most of moisture in dryer section, and upstream about 250 ℃ of hot gass are chilled to 80～100 ℃.Dry back raw material is heated to about 450-500 ℃ in retort section by 600～700 ℃ of oxygen-free burning gas, and thermolysis takes place; Hot gas is chilled to about 250 ℃, and the semicoke of generation enters cooling section and cooled off by cold air.Semicoke is discharged back further water and air cooling.The volatile matter of overflowing from retort section passes through steps such as condensation, cooling, obtains tar and pyrolysis water.
The problem that above-mentioned coal carbonization furnace commonly used at present exists is, the register that feeds thermal barrier in the zone of coal cinder being carried out drying and/or destructive distillation processing is respectively equipped with the pipeline of heat supply, cold air, wherein need seal, in order to avoid gas leaks outside at the position that hot gas and cold duct and body of heater join.Because thermal barrier by the outer conducting of stove to stove, and its temperature is higher, so the temperature and the pressure of the gas in the gas retort all will be higher than the body of heater air outside, so after use after a while, existing register often leaks easily at above-mentioned pipeline and body of heater bonded position, thereby causes calorific loss and accident.
Summary of the invention
For this reason, technical problem to be solved by this invention is the technical problem that leak easily at position that hot gas in the register of existing coal carbonization furnace and cold duct and body of heater join, proposes a kind of rotational flow mixing device that utilizes the air pressure of eddy flow reduction joint, joint is prevented the coal carbonization furnace of drain process.
For solving the problems of the technologies described above, the rotational flow mixing device of a kind of coal carbonization furnace of the present invention comprises:
Gas pipeline, it feeds cold air or hot flue gas in mixing section;
Swirl vane, it is provided with on the circumferential direction of described gas pipeline air outlet for a plurality of, and described a plurality of sheet structures and air current flow direction are at an angle;
The pneumatic outlet of described gas pipeline plane of living in is positioned at described mixing section inwall planar of living in outside.
Described gas pipeline comprises refrigerator pipe and thermal chimney.
Described thermal chimney is arranged at described refrigerator pipe inside.
Be arranged between described refrigerator pipe and the described thermal chimney gas outlet at described swirl vane.
Be 30-85 degree angle between described swirl vane and the air current flow direction.
Be miter angle between described swirl vane and the air current flow direction.
Technique scheme of the present invention has the following advantages compared to existing technology:
Rotational flow mixing device of the present invention, the place is provided with swirl vane at the mouth of pipe, because gas in the exit eddy flow takes place, forms partial subatmospheric at mouth of pipe place, to mixing the effect that indoor gas has played gasket, the security that has improved equipment greatly.
In addition, rotational flow mixing device of the present invention, it makes gas through the out-of-date perturbation that strengthened, thus it is more abundant that gas is mixed.
Have again, rotational flow mixing device of the present invention, the mode that it adopts cold air and hot gas to enter simultaneously, skin is walked cold air, and internal layer is walked hot gas, and outer cold air plays the cooling protection effect to the internal layer pipeline material, thereby has reduced the requirement to its material property.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below according to a particular embodiment of the invention and in conjunction with the accompanying drawings, the present invention is further detailed explanation, wherein:
Fig. 1 is the main TV structure synoptic diagram of a kind of embodiment of rotational flow mixing device of coal carbonization furnace of the present invention;
Fig. 2 is the side-looking structural representation of distribution register shown in Figure 1;
Fig. 3 is the structural representation of another embodiment of rotational flow mixing device of coal carbonization furnace of the present invention;
Reference numeral is expressed as: 1-refrigerator pipe, 2-thermal chimney, 3-mixing section, 4-mixing section furnace wall inwall, 5-swirl vane.
Embodiment
Fig. 1 and 2 has shown a kind of concrete embodiment of the rotational flow mixing device of coal carbonization furnace of the present invention, a kind of rotational flow mixing device of coal carbonization furnace, comprise: gas pipeline, it comprises refrigerator pipe 1 and thermal chimney 2, wherein said refrigerator pipe 1 feeds cold air in mixing section 3, described thermal chimney 2 feeds hot flue gas in described mixing section 3; Swirl vane 5, its for a plurality of that be provided with on the circumferential direction of described gas pipeline air outlet, with air current flow direction a plurality of sheet structures at an angle; The pneumatic outlet of described gas pipeline plane of living in is positioned at described mixing section inwall planar of living in outside, and said here outside is meant the outside on the coal carbonization furnace direction from inside to outside.As shown in Figure 1, described thermal chimney 2 is arranged at described refrigerator pipe 1 inside.Be arranged between described refrigerator pipe 1 and described thermal chimney 2 gas outlets at described swirl vane 5.Be ZZ degree angle between described swirl vane 5 and the air current flow direction, it makes gas through the out-of-date perturbation that strengthened, thereby it is more abundant that gas is mixed.Rotational flow mixing device of the present invention, the mode that it adopts cold air and hot gas to enter simultaneously, skin is walked cold air, and internal layer is walked hot gas, and outer cold air plays the cooling protection effect to the internal layer pipeline material, thereby has reduced the requirement to its material property.
Used the external combustion internally heated coal carbonization furnace of the rotational flow mixing device of present embodiment, it is followed successively by from top to bottom: preheating section, dryer section, retort section and cooling section.Described preheating section is arranged on described dryer section top, is communicated with described dryer section, is used for feed coal is carried out thermal pretreatment; Described dryer section is used for feed coal is carried out drying treatment, and obtains cold flue gas simultaneously; Described retort section is used for that the feed coal through drying treatment is carried out destructive distillation and handles, and feed coal is handled the back through destructive distillation and formed semicoke; Described cooling section is to come the semicoke of output is wherein carried out cooling process by feeding described cold flue gas, and obtains hot flue gas simultaneously.Described coal carbonization furnace also is provided with described cold flue gas conducting that described dryer section the is produced cold flue gas pipeline to described cooling section, and the described hot flue gas conducting that described cooling section is produced is to the exhaust pipe of described preheating section.The recirculation blower that is connected with on the described cold flue gas pipeline, its described cold flue gas that can make the generation in the described dryer section via the conducting of described cold flue gas pipeline to described cooling section, afterwards again via described exhaust pipe conducting to described preheating section.Described cold flue gas pipeline is connected with the emptying passage with the unwanted unnecessary described cold flue gas emptying of described cooling section.In the raw gas exit of described retort section also is connected with described retort section, feed coal is carried out producing when destructive distillation is handled the after-treatment system that raw gas removes coal tar.Between the exhanst gas outlet of described after-treatment system and described dryer section, also be connected with the drying and burning device, between the exhanst gas outlet of described cold flue gas pipeline and described drying and burning device, also be connected drying duct.Described drying and burning device burns the part coal gas that produces in the described after-treatment system, be used for the dry flue gas of the drying treatment of described dryer section with generation, and described drying duct can mix the part cold flue gas that produces in the described dryer section to regulate the temperature of drying treatment in the described dryer section with described dry flue gas.In addition, between the exhanst gas outlet of described after-treatment system and described retort section, also be connected with the destructive distillation burner, between the exhanst gas outlet of the exhanst gas outlet of described after-treatment system and described destructive distillation burner, also be connected with the destructive distillation pipeline.Described destructive distillation burner can burn the part coal gas that produces in the described after-treatment system, be used for the destructive distillation flue gas that the destructive distillation of described retort section is handled with generation, and described destructive distillation pipeline can mix the part coal gas that produces in the described after-treatment system to regulate the temperature of the destructive distillation processing in the described retort section with described destructive distillation flue gas mutually.The smoke inlet place of described drying and burning device and described destructive distillation burner also is connected with the combustion air blower fan that combustion air is provided respectively in described drying and burning device and described destructive distillation burner.
The mode of operation of rotational flow mixing device of the present invention is: feed cold air by refrigerator pipe 1 in mixing section 3, feed hot flue gas by thermal chimney 2 in described mixing section 3.Under the effect of swirl vane 5, eddy flow takes place at the mouth of pipe place of described refrigerator pipe 1 in cold air, so reduced the partial pressure at this place.Should form partial subatmospheric at mouth of pipe place, to mixing the effect that indoor gas has played gasket, the security that has improved equipment greatly.
Fig. 3 has shown another embodiment of the present invention, is that with embodiment difference illustrated in figures 1 and 2 refrigerator pipe 1 and thermal chimney 2 are the independent setting mode, and Fig. 3 shows is the structure of refrigerator pipe 1 wherein.In this embodiment, be provided with swirl vane 5 at the mouth of pipe place of described refrigerator pipe 1, its utilization makes cold air generation eddy flow, thereby has reduced the partial pressure at mouth of pipe place, thereby has played the effect of gasket, the security that has improved equipment greatly.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (6)
1. the rotational flow mixing device of a coal carbonization furnace is characterized in that, comprising:
Gas pipeline, it feeds cold air or hot flue gas in mixing section (3);
Swirl vane (5), it is provided with on the circumferential direction of described gas pipeline air outlet for a plurality of, and described a plurality of sheet structures and air current flow direction are at an angle;
The pneumatic outlet of described gas pipeline plane of living in is positioned at described mixing section inwall planar of living in outside.
2. rotational flow mixing device according to claim 1 is characterized in that, described gas pipeline comprises refrigerator pipe (1) and thermal chimney (2).
3. rotational flow mixing device according to claim 2 is characterized in that, described thermal chimney (2) is arranged at described refrigerator pipe (1) inside.
4. rotational flow mixing device according to claim 3 is characterized in that, is arranged between described refrigerator pipe (1) and described thermal chimney (2) gas outlet at described swirl vane (5).
5. according to the arbitrary described rotational flow mixing device of claim 1-4, it is characterized in that, be 30-85 degree angle between described swirl vane (5) and the air current flow direction.
6. rotational flow mixing device according to claim 5 is characterized in that, is miter angle between described swirl vane (5) and the air current flow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910252428A CN101760213A (en) | 2009-12-04 | 2009-12-04 | Rotational flow mixing device for coal distillation furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910252428A CN101760213A (en) | 2009-12-04 | 2009-12-04 | Rotational flow mixing device for coal distillation furnace |
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| CN101760213A true CN101760213A (en) | 2010-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910252428A Pending CN101760213A (en) | 2009-12-04 | 2009-12-04 | Rotational flow mixing device for coal distillation furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863026A (en) * | 2018-07-17 | 2018-11-23 | 东旭科技集团有限公司 | Gas supply device and float glass tin bath |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2813079Y (en) * | 2005-05-31 | 2006-09-06 | 宝山钢铁股份有限公司 | Spiral-flow funnel shape rotary mixer |
| CN1966133A (en) * | 2006-08-25 | 2007-05-23 | 神木县三江煤化工有限责任公司 | Branch duct mixer |
| CN201574138U (en) * | 2009-12-04 | 2010-09-08 | 北京中能华源投资有限公司 | Swirling flow mixing device for coal dry distillation furnace |
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2009
- 2009-12-04 CN CN200910252428A patent/CN101760213A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2813079Y (en) * | 2005-05-31 | 2006-09-06 | 宝山钢铁股份有限公司 | Spiral-flow funnel shape rotary mixer |
| CN1966133A (en) * | 2006-08-25 | 2007-05-23 | 神木县三江煤化工有限责任公司 | Branch duct mixer |
| CN201574138U (en) * | 2009-12-04 | 2010-09-08 | 北京中能华源投资有限公司 | Swirling flow mixing device for coal dry distillation furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863026A (en) * | 2018-07-17 | 2018-11-23 | 东旭科技集团有限公司 | Gas supply device and float glass tin bath |
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Application publication date: 20100630 |