CN215049967U - Pyrolysis oil gas dust collector - Google Patents
Pyrolysis oil gas dust collector Download PDFInfo
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- CN215049967U CN215049967U CN202023173180.3U CN202023173180U CN215049967U CN 215049967 U CN215049967 U CN 215049967U CN 202023173180 U CN202023173180 U CN 202023173180U CN 215049967 U CN215049967 U CN 215049967U
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Abstract
The utility model belongs to the technical field of the coal chemical industry, concretely relates to pyrolysis oil gas dust collector. The utility model discloses at first remove dust in advance with pyrolysis oil gas through shutter baffle, then recycle the screen of the removal bed particular layer that the dust remover formed and strain, inertial collision, hold back and mode such as diffusion right pyrolysis oil gas further carries out further dust removal purification and heat recovery processing, obtains dustless coal gas. The utility model discloses need not to set up ceramic high temperature filter unit, just can hold back colloid, asphaltene, heavy ends and dust in the pyrolysis oil gas to the realization is removed dust to the high efficiency of pyrolysis oil gas. And simultaneously, the utility model discloses can also reduce the heavy ends and lead to the emergence of pipeline jam because of the high temperature coking, also can reduce follow-up required energy resource consumption that makes pyrolysis oil gas cooling. The problems of complex structure, poor dust separation and purification effect, low heat recovery and utilization rate, high device operation cost and the like of the pyrolysis oil gas dust removal device in the prior art are solved.
Description
Technical Field
The utility model belongs to the technical field of the coal chemical industry, concretely relates to pyrolysis oil gas dust collector.
Background
Coal is used for producing electricity or heat energy through combustion, is an important raw material in metallurgy and chemical industry, is used for refining metal or producing chemical fertilizers and a plurality of chemical products, and is a very important energy source. With the increasingly strict requirements on environmental protection, in order to fully utilize coal resources, the production of petroleum-substituted chemical products by adopting clean coal technology is an important component of the energy policy in China and also an important measure for ensuring energy safety.
So far, many scientific research institutes and enterprises are dedicated to promote the industrialization process of coal pyrolysis upgrading technology and make breakthrough progress to a certain extent, for example, depending on abundant coal resources in part of areas, clean and graded utilization projects of pulverized coal have been planned, constructed and operated to produce upgraded coal, tar, LNG, LPG and other products with high added values. However, the existing pyrolysis oil gas purification technology still has a plurality of defects: (1) contains a large amount of dust, is easy to deposit and block pipelines and equipment; (2) hydrocarbon substances in the gas are easy to condense and separate out or coke at high temperature, and can also cause the blockage of pipelines and equipment when attached to the pipe wall; (3) the coal tar produced by coal pyrolysis gas has high impurity content and low quality. The oil gas and dust separation technology is not effectively broken through so far, and becomes a bottleneck restricting the popularization and utilization of the coal cleaning technology.
In the prior art, a cyclone separator, a wire mesh filter and the like are commonly adopted to remove dust and filter the coal pyrolysis oil gas. Among them, the cyclone separator has high pressure drop and low efficiency of catching dust particles below 5-10 μm, which can only reach about 60-80%, so the cyclone separator can only be used as pre-dedusting equipment and can not solve the problem of easy coking of oil gas. For the metal mesh filter, although the metal mesh filter has good thermal shock resistance, mechanical properties and higher filtering precision, the process still cannot effectively solve the problem that the metal mesh filter cannot normally operate due to dust deposition and high-temperature coking.
Therefore, in order to overcome the difficult problems of dust removal and coking of the pulverized coal pyrolysis oil gas, a feasible pyrolysis oil gas dust removal device is imperative to find.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art pyrolysis oil gas dust removal thoroughly, defect such as easy coking to a pyrolysis oil gas dust collector is provided.
Therefore, the utility model provides a following technical scheme:
the utility model provides a pyrolysis oil gas dust collector, include:
the dedusting agent inlet and the dedusting agent outlet form a dedusting agent channel between the dedusting agent inlet and the dedusting agent outlet;
the oil gas outlet and the oil gas inlet form an oil gas channel between the oil gas outlet and the oil gas inlet, and the oil gas channel and the dedusting agent channel are arranged in a crossed manner;
the inner baffle is arranged at a position close to the oil gas outlet and is used for forming a gas phase area at the oil gas outlet;
the shutter baffle is arranged in the oil gas channel.
Optionally, the dust remover also comprises a screen obliquely arranged below the dedusting agent inlet;
the included angle between the screen and the horizontal direction is more than or equal to 37 degrees;
the aperture of the screen is 5 multiplied by 5 mm.
Optionally, the height of the gas phase area is more than or equal to 1/4 of the dedusting agent channel.
Optionally, the distance between the louver baffles is not less than 150mm, and the included angle between the louver baffles and the horizontal direction is not less than 37 degrees.
Optionally, the oil-gas separator further comprises a forced baffle plate arranged above the oil-gas inlet;
the oil gas inlet protection cover is arranged between the oil gas inlet and the forced baffle plate.
Optionally, h < 1/2D × tg37 ° is satisfied between an outer diameter D of the air inlet protecting cover and a distance h between the air inlet protecting cover and the oil and gas inlet.
Optionally, the oil-gas separator further comprises a gas-collecting bell mouth arranged at an oil-gas outlet in the oil-gas channel;
and the bottom plate of the pyrolysis oil gas dust removal device is obliquely arranged towards the direction of the dust remover outlet.
Optionally, the device also comprises an air guide device which is communicated with the oil gas inlet;
the device also comprises a reaction furnace feeding screw which is communicated with the dedusting agent outlet.
Optionally, a level gauge port is also included.
Optionally, a plurality of temperature measuring ports and pressure gauges are further included.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a pyrolysis oil gas dust collector, include: the dedusting agent inlet and the dedusting agent outlet form a dedusting agent channel between the dedusting agent inlet and the dedusting agent outlet; an oil gas channel is formed between the oil gas outlet and the oil gas inlet, and the oil gas channel and the dedusting agent channel are arranged in a crossed manner; the inner baffle is arranged at a position close to the oil gas outlet and is used for forming a gas phase area at the oil gas outlet; the shutter baffle is arranged in the oil gas channel. The utility model discloses at first utilize the shutter baffle to make the characteristic of air current sharp turn redirecting, make the dust carry out the first time separation desorption with the air current under the inertial force effect, then utilize the high specific surface area and the filter fineness characteristic of the dry coal of solid particle, carry out the sieve to the dust in the pyrolysis oil gas and strain, inertial collision, hold back to reach the purpose that the high-efficient dust removal of second time, it is right simultaneously the pyrolysis oil gas carries out further dust cleaning and heat recovery processing, obtains dustless coal gas. Compared with the prior art, the utility model discloses need not to set up ceramic high temperature filter unit, just can hold back colloid, asphaltene, heavy ends and dust in the pyrolysis oil gas to the realization is removed dust to the high efficiency of pyrolysis oil gas. And simultaneously, the utility model discloses still utilize the dust remover to carry out the heat transfer cooling as the refrigerant to the pyrolysis oil gas, not only can reduce heavy ends and lead to the emergence of pipeline jam because of the high temperature coking, also can reduce follow-up required energy resource consumption that makes the pyrolysis oil gas cooling. The problems of complex structure, poor dust separation and purification effect, low heat recovery and utilization rate, high device operation cost and the like of the pyrolysis oil gas dust removal device in the prior art are solved.
2. The pyrolysis oil gas dust removal device provided by the utility model also comprises a screen which is obliquely arranged below the dust remover inlet; the included angle between the screen and the horizontal direction is more than or equal to 37 degrees; the aperture of the screen is 5 multiplied by 5 mm. The dedusting agent enters from the dedusting agent inlet, falls onto the screen mesh by gravity for screening, and undersize directly falls into the dedusting agent outlet, so that dust in the dedusting agent can be prevented from entering pyrolysis oil gas, oversize materials slide to the cross area of the dedusting agent channel and the oil gas channel along the screen surface, and the pyrolysis oil gas is further subjected to further dedusting and purification and heat recovery treatment in the modes of screening, inertial collision, interception, diffusion and the like of a moving bed particle layer formed by the pyrolysis oil gas and the dedusting agent, so that dust-free coal gas is obtained. The included angle between the screen and the horizontal direction is more than or equal to 37 degrees and larger than the repose angle of the dedusting agent, so that the dedusting agent can naturally flow and slide along the screen, and the accumulation and blockage can be prevented. The aperture of the screen is 5 multiplied by 5mm, and the screen has the function that fine particles smaller than 5mm in the dedusting agent directly enter the dedusting agent outlet and do not participate in trapping dust entrained in the pyrolysis oil gas as the dedusting agent, so that the particles smaller than 5mm are prevented from being entrained and lifted by the pyrolysis oil gas, and the dedusting effect is reduced or the follow-up pipeline equipment is blocked.
3. The utility model provides a pyrolysis oil gas dust collector, the altitude in gaseous phase district is greater than or equal to 1/4 the dust remover passageway height forms sufficient gas-solid settlement interval, not only is favorable to the gas-solid separation between pyrolysis oil gas and the dust remover, prevents that pyrolysis oil gas velocity of flow is too big to lead to the dust remover to be carried into follow-up pipeline and equipment, can effectively reduce dust collector's height and installation space requirement again.
4. The utility model provides a pyrolysis oil gas dust collector, interval between the shutter baffle is greater than or equal to 150mm, the shutter baffle is greater than or equal to 37 with the contained angle of horizontal direction. The distance between the shutter baffles is more than or equal to 150mm, so that bridging and blockage of a dedusting agent between the shutter baffles can be prevented; the included angle between the shutter baffle and the horizontal direction is more than or equal to 37 degrees, which is beneficial to the natural flow and update of dust removal and prevents accumulation and blockage.
5. The pyrolysis oil gas dust removal device provided by the utility model also comprises a forced baffle plate which is arranged above the oil gas inlet; the oil gas inlet protection cover is arranged between the oil gas inlet and the forced baffle plate. The dedusting agent slides to the forced baffle plate and then slides to the cross area of the dedusting agent channel and the oil gas channel after being guided, so that the continuous updating and moving of the dedusting agent in the area can be ensured, the pyrolysis oil gas is fully contacted with the dedusting agent, the dedusting filtering and heat recovery of the pyrolysis oil gas are facilitated, the dedusting and purifying effect and the whole pressure drop are effectively improved, and meanwhile, the blockage caused by the fact that the dedusting agent directly enters the inlet can be avoided. The setting of air inlet safety cover can make pyrolysis oil gas follow annular channel between oil gas import and the air inlet safety cover gets into pyrolysis oil gas dust collector, can be with its gaseous velocity of flow, can also prevent simultaneously that the dedusting agent from falling into to cause the jam in the oil gas import.
6. The utility model provides a pyrolysis oil gas dust collector, the external diameter D of air inlet safety cover satisfy h between the distance h between air inlet safety cover and the oil gas import < 1/2D x tg 37. The h is preferably large in the height range, so that the flow area of gas can be increased, the flow rate of the gas is reduced, and the dust removing agent can be prevented from falling into the oil-gas inlet pipeline.
7. The pyrolysis oil gas dust removal device provided by the utility model also comprises a gas collection bell mouth arranged at the oil gas outlet in the oil gas channel; and the bottom plate of the pyrolysis oil gas dust removal device is obliquely arranged towards the direction of the dust remover outlet. The arrangement of the gas collection bell mouth is favorable for leading the purified pyrolysis oil gas out of the dust removal device; the bottom plate of the pyrolysis oil gas dust removal device is obliquely arranged towards the direction of the dust remover outlet, so that the dust remover can be ensured to flow to the position near the dust remover outlet along the bottom plate, and the device is led out.
8. The utility model provides a pyrolysis oil gas dust collector still includes charge level indicator mouth, a plurality of thermometer mouth and manometer. Therefore, the height of the material level in the dust removing device and the temperature and the pressure at each position can be observed in real time conveniently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the pyrolysis oil gas dust collector of the present invention;
FIG. 2 is a schematic view of a top view structure of the pyrolysis oil gas dust collector provided by the present invention;
FIG. 3 is a schematic top view of section B-B of FIG. 1;
fig. 4 is the utility model provides a pyrolysis oil gas dust collector's left side view structure schematic diagram.
Description of reference numerals:
1-a dedusting agent inlet, 2-a dedusting agent outlet, 3-an oil gas outlet, 4-an oil gas inlet, 5-a material level meter port, 6-a first temperature meter port, 7-a second temperature meter port, 8-a third temperature meter port, 9-a pressure meter port, 10-a square barrel, 11-a special-shaped cone, 12-an inner baffle, 13-a screen, 14-a shutter baffle, 15-a gas collection horn port, 16-a gas inlet protective cover, 17-a gas phase zone top plate, 18-a gas phase zone, 19-a forced baffle, 20-a reaction furnace feeding spiral and 21-a gas guide device.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The utility model provides a pyrolysis oil gas dust collector, as shown in figures 1-4, include: the dedusting agent device comprises a dedusting agent inlet 1 and a dedusting agent outlet 2, wherein a dedusting agent channel is formed between the dedusting agent inlet 1 and the dedusting agent outlet 2; an oil gas outlet 3 and an oil gas inlet 4, wherein an oil gas channel is formed between the oil gas outlet 3 and the oil gas inlet 4, and the oil gas channel and the dedusting agent channel are arranged in a crossed manner; the inner baffle 12 is arranged at a position close to the oil gas outlet 3 and is used for forming a gas phase area in the area of the oil gas outlet 3; a shutter 14 disposed within the oil and gas passage. The utility model discloses at first utilize shutter baffle 14 to make the characteristic of air current sharp turn redirecting, make the dust carry out the first time separation desorption with the air current under the inertial force effect, then utilize the high specific surface area and the filter fineness characteristic of the dry coal of solid particle, carry out the sieve to the dust in the pyrolysis oil gas and strain, inertia collision, hold back to reach the purpose that the high-efficient dust removal of second time, it is right simultaneously the pyrolysis oil gas carries out further dust cleaning and heat recovery processing, obtains dustless coal gas. Compared with the prior art, the utility model discloses need not to set up ceramic high temperature filter unit, just can hold back colloid, asphaltene, heavy ends and dust in the pyrolysis oil gas to the realization is removed dust to the high efficiency of pyrolysis oil gas. And simultaneously, the utility model discloses still utilize the dust remover to carry out the heat transfer cooling as the refrigerant to the pyrolysis oil gas, not only can reduce heavy ends and lead to the emergence of pipeline jam because of the high temperature coking, also can reduce follow-up required energy resource consumption that makes the pyrolysis oil gas cooling. The problems of complex structure, poor dust separation and purification effect, low heat recovery and utilization rate, high device operation cost and the like of the pyrolysis oil gas dust removal device in the prior art are solved.
Specifically, the pyrolysis oil gas dust collector can be a cylinder, a square cylinder or a special-shaped cylinder, and the pyrolysis oil gas dust collector can be a cylinder with the same width (diameter) or different widths or variable diameters. In this embodiment, the pyrolysis dust removal device is provided with a square cylinder 10 above and a special-shaped cone 11 below, the two are communicated, and the diameter of the special-shaped cone below is larger than the width of the square cylinder. A dedusting agent inlet 1 is arranged at the top of the square cylinder body, and a dedusting agent outlet 2 and an oil gas inlet 4 are arranged at the bottom of the special-shaped cone body; the oil gas outlet can be arranged on the side wall of the square cylinder body, and in the embodiment, the oil gas outlet 3 is arranged on a gas phase region top plate 17 of which the top of the special-shaped cone body 11 is wider than the square cylinder body; the inner baffle 12 is arranged on one side of the oil gas outlet 3 close to the center of the special-shaped cone body and used for forming a gas phase area 18 in the area below the oil gas outlet 3, and the shutter baffle 14 is arranged below the inner baffle 12.
In some improved embodiments, the dust remover further comprises a screen 13 which is obliquely arranged below the dust remover inlet 1; the included angle between the screen 13 and the horizontal direction is more than or equal to 37 degrees; the aperture of the screen is 5 multiplied by 5 mm. The dedusting agent enters from the dedusting agent inlet 1 and falls onto the screen 13 by gravity to be screened, undersize directly falls into the dedusting agent outlet 2, so that dust in the dedusting agent can be prevented from entering pyrolysis oil gas, oversize slides to a cross region of a dedusting agent channel and an oil gas channel along a screen surface, and pyrolysis oil gas is further subjected to dedusting purification and heat recovery treatment in the modes of screening, inertial collision, interception, diffusion and the like of a moving bed particle layer formed by the pyrolysis oil gas and the dedusting agent, so that dust-free coal gas is obtained. The included angle between the screen 13 and the horizontal direction is more than or equal to 37 degrees, and the included angle is larger than the repose angle of the dedusting agent, so that the dedusting agent can naturally flow and slide along the screen 13, and the accumulation and blockage can be prevented. The aperture of the screen 13 is 5 multiplied by 5mm, and the screen has the function that fine particles smaller than 5mm in the dedusting agent directly enter the dedusting agent outlet 2 and do not participate in trapping dust entrained in the pyrolysis oil gas as the dedusting agent, so that the particles smaller than 5mm are prevented from being entrained and lifted by the pyrolysis oil gas, and the dedusting effect is reduced or the follow-up pipeline equipment is blocked.
In some improved embodiments, the height of the dedusting agent channel is greater than or equal to 1/4, and a sufficient gas-solid settling interval is formed, so that the gas-solid separation between the pyrolysis oil gas and the dedusting agent is facilitated, the dedusting agent is prevented from being carried into subsequent pipelines and equipment due to the fact that the flow speed of the pyrolysis oil gas is too high, and the height and installation space requirements of the dedusting device can be effectively reduced.
In some improved embodiments, the distance between the shutters 14 is greater than or equal to 150mm, and the angle between the shutters 14 and the horizontal direction is greater than or equal to 37 degrees. The distance between the shutter baffles 14 is more than or equal to 150mm, so that bridging and blockage of a dedusting agent between the shutter baffles can be prevented; the included angle between the shutter baffle 14 and the horizontal direction is more than or equal to 37 degrees, which is beneficial to the natural flow and update of dust removal and prevents accumulation and blockage.
In some improved embodiments, the oil gas separator further comprises a forced baffle 19 arranged above the oil gas inlet 4; and the air inlet protective cover 16 is arranged between the oil and gas inlet 4 and the forced baffle plate 19. The dedusting agent slides to the forced baffle plate 19 and then slides to the cross area of the dedusting agent channel and the oil gas channel after being guided, so that the continuous updating and moving of the dedusting agent in the area can be ensured, the pyrolysis oil gas is fully contacted with the dedusting agent, the dedusting filtration and heat recovery of the pyrolysis oil gas are facilitated, the dedusting and purifying effect and the whole pressure drop are effectively improved, and meanwhile, the blockage caused by the fact that the dedusting agent directly enters the inlet can be avoided. The setting of air inlet safety cover 16 can make pyrolysis oil gas follow annular channel between 4 and the air inlet safety cover 16 of oil gas import gets into pyrolysis oil gas dust collector, can be with its gaseous velocity of flow, can also prevent simultaneously that the dedusting agent from falling into and causing the jam in the oil gas import.
In some improved embodiments, the outer diameter D of the air inlet protective cover and the distance h between the air inlet protective cover and the oil and gas inlet satisfy h < 1/2D × tg37 °. The h is preferably large in the height range, so that the flow area of gas can be increased, the flow rate of the gas is reduced, and the dust removing agent can be prevented from falling into the oil-gas inlet pipeline.
In some improved embodiments, the gas collecting bellmouth 15 is further included and is arranged at the oil and gas outlet 3 in the oil and gas channel; and the bottom plate of the pyrolysis oil gas dust removal device is obliquely arranged towards the direction of the dust remover outlet. The arrangement of the gas collection bell mouth is favorable for leading the purified pyrolysis oil gas out of the dust removal device; the bottom plate of the pyrolysis oil gas dust removal device is obliquely arranged towards the direction of the dust remover outlet, so that the dust remover can be ensured to flow to the position near the dust remover outlet along the bottom plate, and the device is led out.
In addition, in order to facilitate the monitoring of the parameters in the operation process of the device, the device also comprises a material level meter port 5, a plurality of temperature meter ports and a pressure gauge. Specifically, a level indicator port 5 is arranged at the top of the square barrel 10; a first temperature measuring port 6 and a pressure gauge port 9 are arranged at the oil gas outlet 3; a second thermometer port 7 is arranged at the oil gas inlet 4, and a third thermometer port 8 is arranged on the side wall of the square barrel 10; therefore, the height of the material level in the dust removing device and the temperature and the pressure at each position can be observed in real time conveniently.
As another innovation point of the utility model, the utility model selects the dry coal as the dedusting agent, wherein the dry coal is the coal with the temperature of 110-.
The utility model discloses directly use dry coal as the dust remover in order to reach the purpose of dust removal cooling in the dust removal technology of pyrolysis oil gas for the first time, compare with prior art, the utility model discloses can not use purpose-made solid dust remover, also need not to set up ceramic high temperature filter unit, just can hold back colloid, asphaltene, heavy ends and the dust in the pyrolysis oil gas to the realization is removed dust to the high efficiency of pyrolysis oil gas. And simultaneously, the utility model discloses still utilize the dry coal to carry out the heat transfer cooling as the refrigerant to the pyrolysis oil gas, not only can reduce heavy ends and lead to the emergence of pipeline jam because of the high temperature coking, also can reduce follow-up required energy resource consumption that makes the pyrolysis oil gas cooling. The problems of complex structure, poor dust separation and purification effect, low heat recovery and utilization rate, high device operation cost and the like of the pyrolysis oil gas dust removal device in the prior art are solved.
During the use, the pyrolysis oil gas is followed annular channel between 4 and the air inlet safety cover 16 of oil gas import gets into pyrolysis oil gas filter equipment, passes dry coal grained layer and shutter baffle 14, gets into the gaseous phase district 18 that forms between inner baffle 12 and the gaseous phase district roof 17 and subsides the separation back, collects gas and follow 3 dust collector that discharge of oil gas export through gas collection horn mouth 15. The material seal height of the part above the bottom edge of the inner baffle plate 12 is larger than 1m, so that dry gas and pyrolysis oil gas can not flee mutually, and effective isolation can be realized.
The dry coal enters from the dedusting agent inlet 1, falls onto the screen 13 by gravity for screening, the undersize directly falls into the dry coal outlet, the oversize slides onto the forced baffle plate 19 along the screen surface, slides onto the air inlet protective cover 16 after being guided, and the dry coal around the protective cover enters the dedusting agent outlet 2 along the special-shaped cone 11 and is conveyed into the rotary reaction furnace by the reaction furnace feeding screw 20.
Specifically, 400 ℃ pyrolysis oil gas generated by low-temperature pyrolysis of coal in the rotary reaction furnace is led out from the gas guide device 21, enters an oil gas filter through a channel between the oil gas inlet 4 and the gas inlet protective cover 16, passes through the dry coal particle layer and the shutter baffle 14, enters a gas phase area formed between the inner baffle 12 and the gas phase area top plate 17, is subjected to sedimentation separation of dust, is collected through the gas collection bell mouth 15, and is discharged out of the dust removal device from the oil gas outlet 3.
The temperature is 120 ℃, the particle size is 0.2-30mm, the dry coal with the moisture content of 1.0% (wt) enters from the dedusting agent inlet 1, falls onto the screen 13 by gravity for screening, the undersize material smaller than 5mm directly falls into the dedusting agent outlet 2, the oversize material slides onto the forced baffle plate 19 along the screen surface, slides onto the air inlet protective cover 16 after being guided, the formed dry coal particle layer removes dust and filters dust-containing pyrolysis oil gas and recovers heat, then the dry coal around the protective cover enters the dedusting agent outlet 2 along the bottom plate of the special-shaped cone 11, and is conveyed into a rotary reaction furnace (not shown in the figure) through a reaction furnace feeding screw 20 for dry distillation pyrolysis.
In some preferred embodiments, the height requirement of the gas phase zone formed between the inner baffle 12 and the gas phase zone top plate 17 is 1/4 total height of the dust removing device, which is not only beneficial to the gas-solid separation between the pyrolysis oil gas and the dry coal, and prevents the dry coal from being carried into subsequent pipelines and equipment due to the overlarge flow velocity of the pyrolysis oil gas, but also can effectively reduce the height and installation space requirements of the dust removing device.
The flat spacing between the shutter baffles 14 is 150mm, so that bridging and blockage of the dry coal between the shutter baffles can be prevented; the included angle between the shutter baffle and the horizontal direction is 38 degrees, which is larger than the repose angle of the dry coal by 37 degrees, thereby being beneficial to the natural flow and updating of the dry coal and preventing the accumulation and blockage.
The relation of the outer diameter D of the air inlet protective cover 16, the height h between the air inlet protective cover 16 and the oil gas inlet 4 is h < 1/2D multiplied by tg37 degrees. The h is preferably large in the height range, so that the flow area of gas can be increased, the flow rate of the gas can be reduced, and upgraded coal can be prevented from falling into an oil gas inlet pipeline.
The material seal height of the part above the edge of the bottom of the inner baffle plate 12 is 1.5m, so that the material seal formed by drying the coal particle layer of the dry gas and the pyrolysis oil gas can be effectively isolated and do not flee mutually, the material buffer time of the filter can be prolonged, the system fluctuation is reduced, and the operation safety of the device is ensured.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (10)
1. The utility model provides a pyrolysis oil gas dust collector which characterized in that includes:
the dedusting agent inlet and the dedusting agent outlet form a dedusting agent channel between the dedusting agent inlet and the dedusting agent outlet;
an oil gas channel is formed between the oil gas outlet and the oil gas inlet, and the oil gas channel and the dedusting agent channel are arranged in a crossed manner;
the inner baffle is arranged at a position close to the oil gas outlet and is used for forming a gas phase area at the oil gas outlet;
the shutter baffle is arranged in the oil gas channel.
2. The pyrolytic oil and gas dust removal device of claim 1, further comprising a screen obliquely disposed below the dedusting agent inlet;
the included angle between the screen and the horizontal direction is more than or equal to 37 degrees;
the aperture of the screen is 5 multiplied by 5 mm.
3. The pyrolytic oil and gas dust collector of claim 1, wherein the vapor phase zone has a height greater than or equal to 1/4 the height of the dedusting agent channel.
4. The pyrolytic oil gas dust removal device according to claim 1, wherein the distance between the louver baffles is more than or equal to 150mm, and the included angle between the louver baffles and the horizontal direction is more than or equal to 37 degrees.
5. The pyrolytic oil and gas dust removal device of claim 1, further comprising a forced baffle plate disposed above the oil and gas inlet;
the oil gas inlet protection cover is arranged between the oil gas inlet and the forced baffle plate.
6. The pyrolytic oil and gas dust collector of claim 5 wherein the outer diameter D of said air inlet shroud, the distance h between said air inlet shroud and oil and gas inlet satisfy h < 1/2D x tg37 °.
7. The pyrolytic oil and gas dust removal device according to claim 1, further comprising a gas collection bell mouth disposed at an oil and gas outlet in the oil and gas channel;
and the bottom plate of the pyrolysis oil gas dust removal device is obliquely arranged towards the direction of the dust remover outlet.
8. The pyrolytic oil and gas dust collector of claim 1, further comprising an air guide device in communication with the oil and gas inlet;
the device also comprises a reaction furnace feeding screw which is communicated with the dedusting agent outlet.
9. The pyrolytic oil and gas dust collector of claim 1 further comprising a level gauge port.
10. The pyrolytic oil and gas dust collector of claim 1 further comprising a plurality of temperature ports and pressure gauges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023173180.3U CN215049967U (en) | 2020-12-24 | 2020-12-24 | Pyrolysis oil gas dust collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023173180.3U CN215049967U (en) | 2020-12-24 | 2020-12-24 | Pyrolysis oil gas dust collector |
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| CN215049967U true CN215049967U (en) | 2021-12-07 |
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| CN202023173180.3U Active CN215049967U (en) | 2020-12-24 | 2020-12-24 | Pyrolysis oil gas dust collector |
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| CN (1) | CN215049967U (en) |
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