CN212390854U

CN212390854U - Alternative fuel processing system

Info

Publication number: CN212390854U
Application number: CN202021117320.2U
Authority: CN
Inventors: 姚秀丽; 王彬; 李明; 曾计生; 李润国; 韩晓军; 姜斌; 姚金龙; 陶瑛; 张庆民
Original assignee: Cbmi Construction Co ltd
Current assignee: Cbmi Construction Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-01-22
Anticipated expiration: 2030-06-16

Abstract

The utility model relates to a cement industry's alternative fuel field discloses an alternative fuel's processing system, including receiving hopper, mechanical transport and measurement system, pneumatic conveying system, hot-blast main, cold-blast valve, vertical drying system, slag discharge system, cyclone, bag dust collector, waste gas fan, waste gas pipeline, terminal conveying equipment, measurement and feed system, slag discharge system etc. dry, purify the alternative fuel of light to implement measurement and feed to cement system of firing, compare with prior art, the utility model discloses can realize the recycle of light discarded object among the municipal domestic waste, the energy saving protects the environment, utilizes the cement kiln waste heat simultaneously, reduces the heat loss.

Description

Alternative fuel processing system

Technical Field

The utility model relates to a substitute fuel field of cement industry especially relates to a processing system of substitute fuel.

Background

Along with the development of cities and the continuous improvement of the living standard of people, the production amount of urban domestic garbage is increased year by year, the urban domestic garbage is piled up like a mountain, each city is actually a 'surrounding city' surrounded by urban domestic garbage piles, and more serious environmental pollution is caused. In particular, organic light articles such as plastic bags, plush toys, nylon products and the like become waste after being used by people and are difficult to reasonably decompose.

Meanwhile, the development of the cement industry needs a large amount of fuel, and more alternative fuels need to be developed urgently, so that sustainable development can be realized on the premise of not damaging the environment. It is a major technical problem to find how to effectively and fully utilize the light waste to process alternative fuels and provide appropriate fuel resources for cement production lines.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a substitute fuel's processing system has solved the problem of light discarded object among the municipal domestic waste, also provides suitable substitute fuel for the cement system of burning into, kills two birds with one stone.

The utility model discloses a realize through following technical scheme: an alternative fuel processing system comprising:

the pneumatic conveying system is used for conveying materials;

the hot air pipeline is used for conveying hot air;

the vertical drying system comprises a vertical cylinder, wherein the vertical cylinder is provided with a first connecting port for receiving materials from the pneumatic conveying system and a second connecting port for introducing hot air from the hot air pipeline, and the first connecting port is higher than the second connecting port; the vertical drying system also comprises a third air outlet positioned above the first connecting port and used for upwards guiding out hot air and the dried materials; the vertical cylinder is also provided with a bottom opening for leaking materials or impurities which bear more gravity than upward wind force from the vertical cylinder;

the cyclone dust collector is connected with the third air outlet and comprises a fourth discharge hole positioned at the bottom and used for discharging materials; the cyclone dust collector also comprises a fifth air outlet positioned at the top;

the bag type dust collector is connected with the fifth air outlet, further comprises a sixth air outlet and a seventh discharge hole positioned at the bottom, and is used for carrying out secondary collection on residual materials in the drying air flow and sending the materials out from the seventh discharge hole;

the terminal conveying equipment is positioned below the fourth discharge port and the seventh discharge port and used for conveying materials;

and the metering and feeding system is connected with the terminal conveying equipment and is used for metering materials and feeding the materials into the alternative fuel burner.

Preferably, the processing system further comprises:

the receiving hopper is used for receiving materials unloaded by the truck;

and the mechanical conveying and metering system is provided with a feeding end for receiving materials from the bottom of the receiving hopper and a discharging end connected with the pneumatic conveying system.

Preferably, an explosion-proof valve is arranged at the upper part of the cyclone dust collector.

Preferably, a stop valve is arranged between the bag-type dust collector and the fifth air outlet.

The preferable technical scheme is that a cold air valve is arranged on the hot air pipeline and used for adjustably providing cold air for the hot air pipeline.

Preferably, the processing system further comprises a slag discharge system, and the processing system is located below the vertical cylinder and is used for collecting materials or impurities falling from the bottom opening of the vertical cylinder.

The preferable technical scheme is that the treatment system further comprises a waste gas fan, an air inlet of the waste gas fan is connected with the sixth air outlet through a stop valve, and an air outlet of the waste gas fan is connected with the cement burning system through a waste gas pipeline.

In the preferable technical scheme, an explosion-proof sheet is arranged on the bag type dust collector.

In addition, the air inlet of the hot air pipeline is connected with a hot air discharge port of the rotary kiln burning system.

The beneficial effects are that: compared with the prior art, the utility model discloses can realize the reuse of light discarded object among the municipal domestic waste, the energy saving, the environmental protection utilizes the cement kiln waste heat simultaneously, reduces the heat loss.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic view of an embodiment of the process of the present invention;

fig. 2 is a schematic view of an embodiment of a vertical drying system in the present invention;

FIG. 3 is a schematic flow chart of an embodiment of the cyclone dust collector of the present invention;

FIG. 4 is a schematic flow chart of an embodiment of the bag collector of the present invention;

wherein the reference numerals are:

1. a receiving hopper; 2. a mechanical conveying and metering system; 3. a pneumatic conveying system; 4. a hot air duct; 5. a cold air valve; 6. a vertical drying system; 601. a vertical cylinder; 602. a first connection port; 603. a second connection port; 604. the bottom is open; 605. a third air outlet; 606. an exhaust guide cylinder; 7. a slag discharge system; 8. a cyclone dust collector; 801. a fourth discharge port; 802. a fifth air outlet; 9. a bag type dust collector; 901. a sixth air outlet; 902. a seventh discharge hole; 10. a waste gas fan; 11. an exhaust gas conduit; 12. a terminal conveying device; 13. a metering and feeding system; 14. an explosion-proof valve; 15. and a stop valve.

Detailed Description

1-4, an alternative fuel processing system, comprising:

a receiving hopper 1 for receiving a light alternative fuel feedstock discharged by a truck; the bottom of the receiving hopper 1 is provided with a feeding end of a mechanical conveying and metering system 2, the mechanical conveying and metering system 2 removes iron and screens materials, primarily meters the materials, and conveys the materials to a discharging end of the mechanical conveying and metering system 2, the discharging end is connected with a pneumatic conveying system 3, and the pneumatic conveying system 3 conveys the materials by using positive pressure air flow as conveying power; the materials come from municipal solid waste, are uneven in size and weight, contain moisture or impurities, and need to be treated in modes of drying, impurity removal and the like.

And an air inlet of the hot air pipeline 4 is connected with a hot air discharge port of the rotary kiln burning system, and the waste heat of the cement burning system is used as a drying heat source to provide hot air for drying materials.

The vertical drying system 6 comprises a vertical cylinder 601, wherein a first connecting port 602 is arranged on the vertical cylinder 601, the vertical cylinder 601 is connected with the pneumatic conveying system 3 through the first connecting port 602, the pneumatic conveying system 3 conveys conveying materials to the first connecting port 602 to enter the vertical cylinder 601, that is, the vertical cylinder 601 receives the materials. The vertical cylinder 601 is further provided with a second connecting port 603, the vertical cylinder 601 is connected with the hot air pipeline 4 through the second connecting port 603, the hot air pipeline 4 conveys hot air for drying to the second connecting port 603 to enter the vertical cylinder 601, the first connecting port 602 is higher than the second connecting port 603, the hot air passes through the first connecting port 602 from bottom to top, and when the material is dried, the material is continuously conveyed upwards by the lifting force and pressure of the hot air while being conveyed and dried; the vertical drying system 6 further includes an exhaust guide cylinder 606 located above the first connection port 602, and the exhaust guide cylinder 606 includes a third air outlet 605 for guiding out hot air and the dried material; the vertical cylinder 601 is further provided with a bottom opening 604 for leaking the materials or impurities which are subjected to the gravity greater than the upward wind force from the vertical cylinder 601, that is, the light materials such as plastic bags and the like are conveyed upwards. Wherein, the larger particle materials and heavier impurities fall downwards from the vertical cylinder 601 and leak out through the bottom opening 604, so that the dried materials obtained from the vertical drying system 6 have better consistency and are light alternative fuels;

the cyclone dust collector 8 is connected with the third air outlet 605 of the exhaust guide cylinder 606, and the cyclone dust collector 8 comprises a fourth material outlet 801 positioned at the bottom and used for sending out most of materials; the cyclone dust collector 8 further comprises a fifth air outlet 802 positioned at the top;

and the bag type dust collector 9 is connected with the fifth air outlet 802 of the cyclone dust collector 8, the bag type dust collector 9 further comprises a sixth air outlet 901 and a seventh material outlet 902 positioned at the bottom, and the bag type dust collector 9 is used for carrying out secondary collection on residual materials in the drying air flow and sending the materials out from the seventh material outlet 902. Wherein the material collected secondarily is fine particles which cannot be separated in the cyclone dust collector 8;

the terminal conveying equipment 12 is positioned below the fourth discharging hole 801 and the seventh discharging hole 902 and is used for conveying materials;

a metering and feeding system 13 connected to the terminal conveying apparatus 12 for metering and feeding material to the alternative fuel burner. The processing work is completed.

The embodiment can realize the reutilization of light waste in the municipal domestic waste, saves energy, protects the environment, and simultaneously utilizes the waste heat of the cement kiln to reduce heat loss; through the automatic setting of the metering, the whole treatment system can be matched with a cement production line to automatically operate, and the production rate is improved.

In the above embodiment, the mechanical conveying and metering system 2, the pneumatic conveying system 3, the cyclone dust collector 8, the bag type dust collector 9, the terminal conveying equipment 12 and the metering and feeding system 13 are all devices or equipment in the prior art. Wherein:

the embodiment of the mechanical conveying and metering system 2 can be a belt scale feeding, managing, conveying and weighing system.

The pneumatic conveying system 3 adopts positive pressure dense phase pneumatic conveying, and utilizes positive pressure air flow generated by the Roots blower as conveying power to convey the materials continuously supplied by the mechanical conveying and metering system 2 to the subsequent vertical drying system 6.

The cyclone dust collector 8 includes an upper cylinder, a lower inverted cone, and a bottom ash discharge pipe, generally, an upper cylinder part air intake, and the material falls down to the bottom ash discharge pipe along the wall by using the momentum of the inlet speed of the third exhaust port 605 of the exhaust guide cylinder 606 and the downward gravity of the material. When the material rotates and descends, the outward-rotating airflow approaches the center of the dust remover due to the gradual contraction of the cone, and the tangential speed of the outward-rotating airflow is continuously increased. When the airflow reaches a certain position at the lower end of the cone, the airflow rotates upwards in the cyclone dust collector 8 in the same rotating direction and continues to perform spiral motion. Finally, the purified gas passes through the fifth air outlet 802, and is generally called as an inner cyclone, a part of particles which are not collected are discharged along with the inner cyclone, a larger material enters the ash discharging pipe at the bottom of the cyclone dust collector 8, and the material can be leaked out through the fourth discharge hole 801 on the opened ash discharging pipe, so that the primary collection of the material is realized.

The working principle of the bag type dust collector 9 is that after dust-containing gas enters from the air inlet at the upper part of the ash bucket, the airflow flows upwards under the action of the wind shield, the flow speed is reduced, materials and dust with relatively large particles are separated out under the action of inertia force and fall into the ash bucket at the bottom of the ash bucket, the ash bucket is opened, and the materials and the dust fall from the seventh air outlet. The gas containing dust enters the middle box body and is filtered and purified by the filter bag, the dust is blocked on the outer surface of the filter bag, and the purified gas enters the upper box body through the filter bag opening and is discharged from the sixth air outlet 901.

An example of the end conveyor 12 may be a belt conveyor or a drag conveyor or the like.

The difference from the above embodiment is that the explosion-proof valve 14 is arranged at the upper part of the cyclone dust collector 8.

As shown in fig. 1, a stop valve 15 is arranged between the bag-type dust collector 9 and the fifth air outlet 802, so as to facilitate opening and closing and maintenance.

As shown in fig. 1, a cold air valve 5 is disposed on the hot air duct 4 for adjustably providing cold air to the hot air duct 4. Because the moisture content in the material changes, the drying temperature in the vertical drying system 6 fluctuates, and in order to adjust the temperature of the drying hot air, cold air can be doped according to the requirement.

As shown in fig. 1, the processing system further comprises a slag discharge system 7, which is located below the vertical cylinder 601 and is used for collecting the materials or impurities falling from the bottom opening 604 of the vertical cylinder 601.

As shown in fig. 1, the treatment system further includes a waste gas blower 10, an air inlet of the waste gas blower 10 is connected to the sixth air outlet 901 through a stop valve 15, and an air outlet of the waste gas blower 10 is connected to the cement burning system through a waste gas pipeline 11 for recycling waste heat.

As shown in fig. 1, an explosion-proof sheet is arranged on the bag type dust collector 9 to protect the bag type dust collector 9 from operating under the condition of safe pressure.

In the above embodiments, technical features, devices or components which are not described in detail can be regarded as broad technical features, devices or components in the prior art.

The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the scope of the present invention should be included in the scope of the technical solutions of the present invention.

Claims

1. An alternative fuel processing system, comprising:

the pneumatic conveying system is used for conveying materials;

the hot air pipeline is used for conveying hot air;

2. The processing system of claim 1, further comprising:

the receiving hopper is used for receiving materials unloaded by the truck;

3. The treatment system according to claim 1, wherein an explosion-proof valve is provided at an upper portion of the cyclone.

4. The treatment system of claim 1, wherein a shut-off valve is disposed between the bag collector and the fifth air outlet.

5. The processing system according to claim 1, wherein a cold air valve is disposed on the hot air duct for adjustably supplying cold air to the hot air duct.

6. The processing system of claim 1, further comprising a slag extraction system located below the vertical cylinder for collecting material or impurities falling from the bottom opening of the vertical cylinder.

7. The treatment system of any one of claims 1 to 6, further comprising an exhaust gas blower, wherein an air inlet of the exhaust gas blower is connected to the sixth air outlet through a stop valve, and an air outlet of the exhaust gas blower is connected to the cement burning system through an exhaust gas pipeline.

8. The treatment system according to any one of claims 1 to 6, wherein an explosion-proof sheet is provided on the bag collector.

9. The treatment system as claimed in any one of claims 1 to 6, wherein the air inlet of the hot air duct is connected with a hot air discharge port of the rotary kiln burning system.