CN203855164U - Pulverized coal pneumatic conveyor - Google Patents

Pulverized coal pneumatic conveyor Download PDF

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Publication number
CN203855164U
CN203855164U CN201420240923.XU CN201420240923U CN203855164U CN 203855164 U CN203855164 U CN 203855164U CN 201420240923 U CN201420240923 U CN 201420240923U CN 203855164 U CN203855164 U CN 203855164U
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China
Prior art keywords
coal dust
tank
discharge nozzle
tank body
pneumatic conveyer
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CN201420240923.XU
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Chinese (zh)
Inventor
张利锋
徐才福
胡斌
殷为玉
刘强
张志华
王来伟
夏文武
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China Wuhuan Engineering Co Ltd
AT&M Environmental Engineering Technology Co Ltd
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Advanced Technology and Materials Co Ltd
China Wuhuan Engineering Co Ltd
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Abstract

The utility model discloses a pulverized coal pneumatic conveyor and belongs to the field of powder conveying. The pulverized coal pneumatic conveyor comprises a tank, consisting of a tank top, a wall and a tank bottom, a fluidized disc, a filter diffusion chamber with a filter, a discharge pipe, and a gas feeder; the tank top is provided with a feed opening and diffusion orifices; the wall consists of a tubular segment and a taper segment; the upper end of the tubular segment is connected with the lower end of the tank top; the upper end of the taper segment is connected with the lower end of the tubular segment; the taper segment is provided with a discharge opening; the diameter of the upper end of the taper wall is larger than that of the lower end of the taper segment; the upper end of the tank bottom is connected with the lower end of the taper segment; the cross section of the tank bottom is U shaped. The bottom of the tank bottom is provided with an intake orifice of high-pressure gas. The pulverized coal pneumatic conveyor according to the technical scheme allows long-circle conveying of pulverized coal.

Description

Coal dust Pneumatic conveyer
Technical field
The utility model relates to powder material transportation art, particularly a kind of coal dust Pneumatic conveyer.
Background technology
In order to solve the energy demand problem of growing tension, and avoid depending on unduly crude oil, in the following more than ten years, Chinese Government's planned investment exceedes 1 trillion yuan and greatly develops Chemical Industry, and wherein equipment cost accounts for 50%.From the industrial structure, coal methyl alcohol processed, dimethyl ether, olefin hydrocarbon making by coal and green coal electricity will obtain great development at 15 years from now on.Simultaneously, Coal Energy Source chemical industry will be played the part of important role in the sustainable use of Chinese energy, be the important development direction of 20 years from now on, this alleviates environmental pollution that fire coal causes, reduces China the dependence of Imported oil is all had great significance for China.
Wherein, coal dust pressurized gasification is the important component part of most of coal chemical engineering equipment.The close feed that pressurizes mutually of coal dust is the FEOL of this process section.At present, theory and practice can prove that the close feed that pressurizes mutually of coal dust has machinery and carries incomparable advantage, as good stability, to advantages such as e-quipment and pipe wearing and tearing are less.In general, coal dust positive delivery has following advantage: one, have larger conveying solid-gas ratio, carry a certain amount of coal dust desired gas to consume less, can reach 130; Two, gas-solid two-phase flow velocity in pipeline is low, and pipe wear is few, and material is damaged few; Three, because flow velocity is relatively low, so system relative stability is good; Four, system energy consumption is low.
Based on this, numerous scientific research and development mechanisms and colleges and universities have produced keen interest to coal dust Pneumatic Conveying Technology.The large-scale Coal Chemical Industry industries such as coal hydrogen manufacturing, coal liquefaction and green coal electricity that this technology relates to all need to be to uniform, the continuous conveying dry pulverized coal of gasifier nozzle under high-pressure situations.For example, Xi'an thermal technology institute, etc. all at the positive coal dust conveying technology of carrying out.
What Xi'an thermal technology institute taked at high pressure coal dust delivery technology is the close phase pulverized coal conveying device of top discharge, and coal dust discharging opening is opened at transmitting apparatus top, because high-tension apparatus gut line is long, causes unstable working condition, is unfavorable for macrocyclic production.
Summary of the invention
In order to address the above problem, the utility model embodiment provides a kind of coal dust Pneumatic conveyer, it comprises: have tank deck, tank body at the bottom of tank skin and tank, on described tank deck, have feeding mouth, described feeding mouth place is sealedly connected with pan feeding valve, on described tank deck, also have and diffuse hole, described tank skin comprises barrel section and cone wall section, the upper end of described barrel section is connected with the lower end of described tank deck, the upper end of described cone wall section is connected with the lower end of described barrel section, in described cone wall section, have discharging opening, the diameter of described cone wall section upper end is greater than the diameter of described cone wall section lower end, upper end at the bottom of described tank is connected with the lower end of described cone wall section, section at the bottom of described tank is U-shaped, bottom at the bottom of described tank is provided with the induction opening of high pressure gas, fluidized disk in being arranged at the bottom of described tank with the mode of horizontal direction parallel, while passing into described induction opening, forms fluidising chamber with high pressure gas at the bottom of described tank, chamber is diffused in the filtration with filter, the input port that chamber is diffused in described filtration with described in diffuse hole and be directly communicated with and be tightly connected, described filter is arranged in a horizontal manner described filtration and diffuses indoor, the delivery port that chamber is diffused in described filtration is positioned at described filtration and diffuses the top of chamber, and the equipped at outlet port that chamber is diffused in described filtration is sealedly connected with diffusion valve, discharge nozzle, stretch out outside described discharging opening one end of described discharge nozzle, in the other end of described discharge nozzle extends at the bottom of described tank, and is positioned at the top of described fluidized disk, and gas feeder, the delivery port of described gas feeder is directly communicated with described induction opening, and is tightly connected, and the equipped at outlet port of described gas feeder is sealedly connected with air inlet valve.
In coal dust Pneumatic conveyer as above, preferably, described discharging opening arranges in a horizontal manner; Described discharge nozzle comprises: horizontal segment and vertically section, described horizontal segment and described vertical section of the same side that is positioned at described tank body axis, stretch out outside described discharging opening one end of described horizontal segment, the other end of described horizontal segment is positioned at described tank body, and the junction being connected to form by the other end of the upper end of described vertical section and described horizontal segment is circular arc; The lower end of described vertical section is positioned at the top of described fluidized disk.
In coal dust Pneumatic conveyer as above, preferably, described discharging opening is near the lower end of described cone wall section.
In coal dust Pneumatic conveyer as above, preferably, the distance between described vertical section and described tank body axis is less than the distance between described vertical section and described cone wall section.
In coal dust Pneumatic conveyer as above, preferably, the quantity of described discharging opening is two, and two described discharging openings are about the axis symmetry of described tank body.
In coal dust Pneumatic conveyer as above, preferably, described coal dust Pneumatic conveyer also comprises: for measuring the nucleon grain position meter of coal dust position in described tank body; Described nucleon grain position meter is arranged on the lateral surface of described barrel section.
In coal dust Pneumatic conveyer as above, preferably, described coal dust Pneumatic conveyer also comprises: for dredging the air compensation device of described discharge nozzle; Described air compensation device is arranged on the discharge nozzle outside described tank body.
In coal dust Pneumatic conveyer as above, preferably, described coal dust Pneumatic conveyer also comprises: bleeder valve and for dredging the air compensation device of described discharge nozzle; Described bleeder valve is positioned on the discharge nozzle outside described tank body; Described air compensation device is arranged on the discharge nozzle outside described tank body, and along the throughput direction of coal dust, described air compensation device with respect to described bleeder valve away from described cone wall section.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
By adopting gas fluidized device that fluidized disk and gas feeder are set, the easy leakage having avoided adopting mechanical transmission to cause in feedway, shortcoming that can not continous-stable work, be more suitable for the high-pressure delivery in coal dust, and by discharging opening being arranged in the cone wall section of tank skin, shorten the length of discharge nozzle, overcome pipeline and shaken the impact bringing, be more suitable in macrocyclic production run; Diffuse chamber by arranging on tank deck top to filter, avoided coal dust to be directly discharged to outside tank body, reduced pollution, improved staff's operating environment.
Brief description of the drawings
The structural representation of a kind of coal dust Pneumatic conveyer that Fig. 1 provides for the utility model embodiment;
Wherein, in figure, nomenclature is as follows:
At the bottom of 11 tank decks, 12 tank skins, 13 tanks, 110 feeding mouths, 111 diffuse hole,
120 barrel sections, 121 cone wall sections, 122 discharging openings, 130 induction openings,
2 fluidized disks, 3 filter diffuse chamber, 4 discharge nozzles, 5 gas feeders,
41 horizontal segments, 42 are section, 6 nucleon grain position meters, 7 air compensation devices vertically.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Referring to Fig. 1, the utility model embodiment provides a kind of coal dust Pneumatic conveyer, and it is exported by strength the coal dust entering in this device.This device comprises: chamber 3, discharge nozzle 4 and gas feeder 5 are diffused in tank body, fluidized disk 2, filtration.
Particularly, tank body has at the bottom of tank deck 11, tank skin 12 and tank 13.
Wherein, tank deck 11 is curved, has feeding mouth 110 at the middle part of tank deck 11, feeding mouth 110 places are sealedly connected with the pan feeding valve that opens or closes feeding mouth, when application, open pan feeding valve to open feeding mouth, make coal dust to be conveyed enter the inside of tank body by feeding mouth 110.In reality, pan feeding valve can be sealedly attached to the discharging opening of the hopper that fills coal dust; On tank deck 11, also have and diffuse hole 111, discharge for gas that coal dust is brought in the process that enters tank interior, the quantity of diffusing hole 111 is preferably two, and two are diffused hole 111 and be respectively in the arranged on left and right sides of feeding mouth 110.
Tank skin 12 comprises: barrel section 120 and cone wall section 121.The upper end of barrel section 120 is connected with the lower end of tank deck 11, and the upper end of cone wall section 121 is connected with the lower end of barrel section 120, and the diameter of cone wall section upper end is greater than the diameter of boring wall section lower end, forms inverted circular cone shape, in cone wall section 121, has discharging opening 122.
At the bottom of tank 13, its section is U-shaped.At the bottom of tank, 13 upper end is connected with the lower end of cone wall section 121, and the bottom at the bottom of tank is provided with induction opening 130, and when application, high pressure gas enter in tank body by induction opening.
Fluidized disk 2, is arranged at the bottom of tank in 3 in a parallel manner, and when application, high pressure gas enter in tank body by induction opening 130, utilize the fluidization effect that fluidized disk 2 produces at the bottom of tank, to form fluidising chamber, thereby have ensured the stability that coal dust is carried.When discharge nozzle is while being multiple, multiple branch circuit is carried, and can also ensure stability and homogeneity that each branch road coal dust is carried.
For fear of by diffusing in the gas of discharging in hole 111 with coal dust, with diffuse hole 111 and be sealedly connected with to filter and diffuse chamber 3, its input port with diffuse hole 111 and be directly communicated with and be tightly connected, its delivery port is positioned to filter and diffuses the top of chamber 3, and is sealedly connected with diffusion valve at equipped at outlet port.Filtration is diffused and in chamber 3, is provided with in a horizontal manner filter, for by by diffuse the gas of discharging in hole 111 with coal dust tackle, when application, open diffusion valve to open the delivery port that diffuses filter chamber, tackle coal dust by filter, thereby avoid coal dust to be directly discharged in air, pollute the air of producing tract, open in the process of diffusion valve Exhaust Gas simultaneously and can also make the air pressure in tank body return to normal pressure, be beneficial to high pressure gas and enter in tank body.
Discharge nozzle 4, for drawing coal dust outside tank body.Stretch out outside discharging opening 122 one end of discharge nozzle, and the other end extends at the bottom of tank in 13, and be positioned at the top of fluidized disk 2.When application, coal dust to be conveyed is exported by discharge nozzle 4, and for example, the discharge nozzle outside tank body is communicated with the burner of gasification furnace, now, enters the reactors such as gasification furnace thereby can coal dust be delivered to burner by discharge nozzle 4.
Gas feeder 5, for provide high pressure gas in tank body, its delivery port is directly communicated with induction opening 130, and is tightly connected, and its equipped at outlet port is sealedly connected with the air inlet valve that is used to open or close delivery port.In reality, gas feeder can be gas compression tank, can also be gas compression pump.
Due in the process of high-pressure delivery coal dust, discharge nozzle very easily produces jitter conditions, discharge nozzle shake is very unfavorable for macrocyclic production, if by strengthening the fixation of discharge nozzle, in avoiding discharge nozzle to produce jitter conditions, also can have influence on coal dust blanking, easily produce " bridging " phenomenon.Produce jitter conditions for fear of discharge nozzle, discharging opening 122 arranges in a horizontal manner; Discharge nozzle 4 has: horizontal segment 41 and vertically section 42.Horizontal segment 41 and vertically section 42 are positioned at the same side of tank body axis, and stretch out outside discharging opening 122 one end of horizontal segment 41, and the other end of horizontal segment 41 is positioned at tank body; Vertically the upper end of section 42 is connected with the other end of horizontal segment 41, the junction being connected to form by the other end of the upper end of vertical section 42 and horizontal segment 41 is circular arc, vertically the lower end of section 42 is positioned at the top of fluidized disk 2, and discharge nozzle 4 can be structure as a whole, and can also be unitized construction.Preferably, discharging opening 122, near the lower end of cone wall section 121, so, has further shortened the length of the discharge nozzle that is positioned at tank body, has further avoided the jitter conditions of discharge nozzle, thereby has realized the continous-stable work that long period is produced.For the ease of coal dust by outputing in tank body outside tank body, vertically section and the distance between tank body axis be less than vertical section with cone wall section between distance, in other words, the vertically middle part of section close fluidized disk.The quantity of discharging opening 122 can be multiple, is preferably two, and two discharging openings 122 are about the axis symmetry of tank body.
Due in tank body outside tank body pulverized coal conveying, coal dust in tank body can reduce gradually, in order to improve the transport efficiency of coal dust, when in tank body, coal dust residue is not enough, prompting staff adds coal dust, on the lateral surface of barrel section 120, be provided with nucleon grain position meter 6, for the position of measuring coal dust in tank body, with at coal dust during lower than a certain setting height, coal dust is added in prompting.
In order to prevent that discharge nozzle from stopping up in the process of pulverized coal conveying, is provided with air compensation device 7 on the discharge nozzle outside tank body.In order rationally to control the output of coal dust, on the discharge nozzle outside tank body, be also provided with bleeder valve, along the throughput direction of coal dust, air compensation device 7 with respect to bleeder valve away from cone wall section 121,
The working process of a kind of coal dust Pneumatic conveyer below the utility model embodiment being provided describes:
Open pan feeding valve to open feeding mouth, open diffusion valve simultaneously, coal dust is slowly poured in tank body by feeding mouth, pour in the process of coal dust, coal dust is brought into the delivery port that gas in tank body diffuses chamber by filtration and discharges, and is suspended in coal dust in gas and is filtered the filter that diffuses chamber and tackles.After pouring coal dust into and completing, first close pan feeding valve, then close diffusion valve, the air pressure being so beneficial in tank body returns to normal pressure.
Open air inlet valve, gas feeder starts to conveying high-pressure gas in tank body, and the fluidization effect of utilizing fluidized disk to produce forms fluidising chamber at the bottom of tank, has ensured stability that coal dust is carried and the homogeneity of output coal dust.In coal dust course of conveying, stop up or the inadequate situation of tolerance if there is discharge nozzle, start air compensation device and carry out tonifying Qi to discharge nozzle.Owing to being provided with nucleon grain position meter outward at tank body, the breeze material position in tank body is during lower than setup parameter, and it can point out reinforced.
In sum, the beneficial effect of the utility model embodiment is as follows:
By adopting gas fluidized device that fluidized disk and gas feeder are set, the easy leakage having avoided adopting mechanical transmission to cause in feedway, shortcoming that can not continous-stable work, be more suitable for the high-pressure delivery in coal dust, and by discharging opening being arranged in the cone wall section of tank skin, shorten the length of discharge nozzle, overcome pipeline and shaken the impact bringing, be more suitable in macrocyclic production run; Diffuse chamber by arranging on tank deck top to filter, avoided coal dust to be directly discharged to outside tank body, reduced pollution, improved staff's operating environment.
As known by the technical knowledge, the utility model can be realized by other the embodiment that does not depart from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, is all casehistory, is not only.Allly within the scope of the utility model or in the change being equal in scope of the present utility model, be all included in the utility model.

Claims (8)

1. a coal dust Pneumatic conveyer, is characterized in that: described coal dust Pneumatic conveyer comprises:
There is tank deck, tank body at the bottom of tank skin and tank, on described tank deck, have feeding mouth, described feeding mouth place is sealedly connected with pan feeding valve, on described tank deck, also have and diffuse hole, described tank skin comprises barrel section and cone wall section, the upper end of described barrel section is connected with the lower end of described tank deck, the upper end of described cone wall section is connected with the lower end of described barrel section, in described cone wall section, have discharging opening, the diameter of described cone wall section upper end is greater than the diameter of described cone wall section lower end, upper end at the bottom of described tank is connected with the lower end of described cone wall section, section at the bottom of described tank is U-shaped, bottom at the bottom of described tank is provided with the induction opening of high pressure gas,
Fluidized disk in being arranged at the bottom of described tank with the mode of horizontal direction parallel, while passing into described induction opening, forms fluidising chamber with high pressure gas at the bottom of described tank;
Chamber is diffused in the filtration with filter, the input port that chamber is diffused in described filtration with described in diffuse hole and be directly communicated with and be tightly connected, described filter is arranged in a horizontal manner described filtration and diffuses indoor, the delivery port that chamber is diffused in described filtration is positioned at described filtration and diffuses the top of chamber, and the equipped at outlet port that chamber is diffused in described filtration is sealedly connected with diffusion valve;
Discharge nozzle, stretch out outside described discharging opening one end of described discharge nozzle, in the other end of described discharge nozzle extends at the bottom of described tank, and is positioned at the top of described fluidized disk; And
Gas feeder, the delivery port of described gas feeder is directly communicated with described induction opening, and is tightly connected, and the equipped at outlet port of described gas feeder is sealedly connected with air inlet valve.
2. coal dust Pneumatic conveyer according to claim 1, is characterized in that, described discharging opening arranges in a horizontal manner;
Described discharge nozzle comprises: horizontal segment and vertically section, described horizontal segment and described vertical section of the same side that is positioned at described tank body axis, stretch out outside described discharging opening one end of described horizontal segment, the other end of described horizontal segment is positioned at described tank body, and the junction being connected to form by the other end of the upper end of described vertical section and described horizontal segment is circular arc; The lower end of described vertical section is positioned at the top of described fluidized disk.
3. according to the coal dust Pneumatic conveyer described in claim 2, it is characterized in that, described discharging opening is near the lower end of described cone wall section.
4. according to the coal dust Pneumatic conveyer described in claim 2 or 3, it is characterized in that, the distance between described vertical section and described tank body axis is less than the distance between described vertical section and described cone wall section.
5. coal dust Pneumatic conveyer according to claim 4, is characterized in that, the quantity of described discharging opening is two, and two described discharging openings are about the axis symmetry of described tank body.
6. coal dust Pneumatic conveyer according to claim 1, is characterized in that, described coal dust Pneumatic conveyer also comprises: for measuring the nucleon grain position meter of coal dust position in described tank body;
Described nucleon grain position meter is arranged on the lateral surface of described barrel section.
7. coal dust Pneumatic conveyer according to claim 1, is characterized in that, described coal dust Pneumatic conveyer also comprises: for dredging the air compensation device of described discharge nozzle;
Described air compensation device is arranged on the discharge nozzle outside described tank body.
8. coal dust Pneumatic conveyer according to claim 1, is characterized in that, described coal dust Pneumatic conveyer also comprises: bleeder valve and for dredging the air compensation device of described discharge nozzle;
Described bleeder valve is positioned on the discharge nozzle outside described tank body;
Described air compensation device is arranged on the discharge nozzle outside described tank body, and along the throughput direction of coal dust, described air compensation device with respect to described bleeder valve away from described cone wall section.
CN201420240923.XU 2014-05-12 2014-05-12 Pulverized coal pneumatic conveyor Active CN203855164U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105129433A (en) * 2015-09-18 2015-12-09 山东钢铁股份有限公司 Fluidifying feeding device for upward-leading type pneumatic conveying bin pump
CN111349469A (en) * 2018-12-24 2020-06-30 国家能源投资集团有限责任公司 Burner, feeding device, gasification furnace and gasification system
CN111349467A (en) * 2018-12-24 2020-06-30 国家能源投资集团有限责任公司 Burner, feeding device, gasification furnace and gasification system
CN111348341A (en) * 2018-12-24 2020-06-30 国家能源投资集团有限责任公司 Material sending tank for gasification system, feeding device with material sending tank and gasification system
CN111349464A (en) * 2018-12-24 2020-06-30 国家能源投资集团有限责任公司 Entrained-flow bed gasification system and method for dry pulverized coal
CN111349463A (en) * 2018-12-24 2020-06-30 国家能源投资集团有限责任公司 Entrained-flow bed gasification system and method for dry pulverized coal

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105129433A (en) * 2015-09-18 2015-12-09 山东钢铁股份有限公司 Fluidifying feeding device for upward-leading type pneumatic conveying bin pump
CN111349469A (en) * 2018-12-24 2020-06-30 国家能源投资集团有限责任公司 Burner, feeding device, gasification furnace and gasification system
CN111349467A (en) * 2018-12-24 2020-06-30 国家能源投资集团有限责任公司 Burner, feeding device, gasification furnace and gasification system
CN111348341A (en) * 2018-12-24 2020-06-30 国家能源投资集团有限责任公司 Material sending tank for gasification system, feeding device with material sending tank and gasification system
CN111349464A (en) * 2018-12-24 2020-06-30 国家能源投资集团有限责任公司 Entrained-flow bed gasification system and method for dry pulverized coal
CN111349463A (en) * 2018-12-24 2020-06-30 国家能源投资集团有限责任公司 Entrained-flow bed gasification system and method for dry pulverized coal
CN111349463B (en) * 2018-12-24 2021-03-23 国家能源投资集团有限责任公司 Entrained-flow bed gasification system and method for dry pulverized coal
CN111349464B (en) * 2018-12-24 2021-03-23 国家能源投资集团有限责任公司 Entrained-flow bed gasification system and method for dry pulverized coal
CN111349469B (en) * 2018-12-24 2021-04-23 国家能源投资集团有限责任公司 Burner, feeding device, gasification furnace and gasification system
CN111348341B (en) * 2018-12-24 2022-03-29 国家能源投资集团有限责任公司 Material sending tank for gasification system, feeding device with material sending tank and gasification system

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Effective date of registration: 20230118

Address after: 100081 room 206, building 17, 76 Xueyuan South Road, Haidian District, Beijing

Patentee after: AT&M ENVIRONMENTAL ENGINEERING TECHNOLOGY Co.,Ltd.

Patentee after: Wuhuan Engineering Co.,Ltd.

Address before: 100081 No. 76 South College Road, Beijing, Haidian District

Patentee before: ADVANCED TECHNOLOGY & MATERIALS Co.,Ltd.

Patentee before: Wuhuan Engineering Co.,Ltd.