CN215288658U - High-efficient moving bed formula rice husk charcoal cogeneration device - Google Patents

Abstract

The utility model provides a high-efficient portable rice husk charcoal cogeneration device, include: horizontal migration bed formula rice husk gasifier, exhaust-heat steam boiler, flue gas processing apparatus, exhaust-heat steam boiler passes through high temperature gas pipeline and horizontal migration bed formula rice husk gasifier intercommunication, and flue gas processing apparatus includes: the system comprises a dry desulfurization tower, a dust removal cloth bag, an induced draft fan and a chimney, wherein flue gas generated by the waste heat steam boiler is introduced into the dry desulfurization tower, the dry desulfurization tower is communicated with the dust removal cloth bag, the dust removal cloth bag is communicated with the chimney, and the induced draft fan is arranged on a pipeline between the dust removal cloth bag and the chimney. The utility model discloses set up exhaust-heat steam boiler, the high temperature gas that the horizontal migration bed formula rice husk gasification stove produced lets in the exhaust-heat boiler and carries out the abundant burning, carries out make full use of with the energy, sets up flue gas processing apparatus simultaneously and reduces environmental pollution.

Description

High-efficient moving bed formula rice husk charcoal cogeneration device

Technical Field

The utility model relates to a rice husk charcoal production and exhaust-heat boiler technical field especially relate to a high-efficient moving bed formula rice husk charcoal cogeneration device.

Background

The existing rice husk charcoal production process is that rice husks are put into a pyrolysis furnace, the rice husks are pyrolyzed at a certain temperature, separated volatile matters and incompletely combusted particulate matters are discharged through a chimney at the tail part, and the remainder is a rice husk charcoal product. The rice husk charcoal production process belongs to incomplete combustion, and smoke of the rice husk charcoal contains a large amount of volatile matters (mainly CO, H2 and CH 4) and incomplete combustion particles, and is directly discharged into the atmosphere without any treatment device, so that serious atmospheric pollution is caused.

Although patent (CN 201610145230.6) provides a rice husk charcoal pyrolysis oven flue gas processing system, can effectively carry out purification treatment and then discharge to the flue gas that rice husk charcoal production facility produced, can not effectively utilize the energy to current rice husk charcoal production facility adopts the manual work to carry out the feed, can not control the raw materials homogeneous stability that gets into in the rice husk charcoal apparatus for producing, and system's equipment is simple, and the capacity is less.

Disclosure of Invention

To the problem in the above-mentioned background art, the utility model provides a high-efficient portable rice husk charcoal cogeneration device, include: horizontal migration bed formula rice husk gasifier still includes: exhaust-heat steam boiler, flue gas processing apparatus, horizontal migration bed formula rice husk gasifier, exhaust-heat steam boiler pass through high temperature gas pipeline with horizontal migration bed formula rice husk gasifier intercommunication, flue gas processing apparatus includes: the waste heat steam boiler generates flue gas and leads into the dry desulfurization tower, the dry desulfurization tower is communicated with the dust removal cloth bag, the dust removal cloth bag is communicated with the chimney, and the draught fan is installed on a pipeline between the dust removal cloth bag and the chimney.

Further, be provided with the conveyer belt in the horizontal migration bed formula rice husk gasifier, the conveyer belt conveys from the left to the right, the left end top of conveyer belt is equipped with the rice husk feed inlet, the right side below of conveyer belt is equipped with rice husk charcoal discharge gate, the top of horizontal migration bed formula rice husk gasifier is equipped with the gas export.

Further, be equipped with first smoke chamber, second smoke chamber, third smoke chamber in the exhaust-heat steam boiler, first smoke chamber and second smoke chamber intercommunication, second smoke chamber and third smoke chamber intercommunication, install SNCR desulphurization unit in the first smoke chamber, install the convection current evaporimeter in the second smoke chamber, install the SCR in the third smoke chamber and sell the device, the gas entry has been seted up on the first smoke chamber, the first end of high temperature gas pipeline with the gas export intercommunication, the second end of high temperature gas with the gas entry intercommunication.

Further, the method also comprises the following steps: the rice husk gasification furnace comprises a rice husk bin and a spiral feeding device, wherein the first end of the spiral feeding device is communicated with an outlet at the bottom of the rice husk bin, and the second end of the spiral feeding device is communicated with a rice husk feeding hole of the horizontal moving bed type rice husk gasification furnace.

Further, the method also comprises the following steps: air heater, bellows, the flue gas discharge port has been seted up on the third smoke chamber, be equipped with flue gas channel in the air heater, flue gas channel with flue gas discharge port intercommunication, the last air heating passageway that is equipped with of air heater, the first end of air heating passageway pass through the connecting pipe with the bellows is connected, the second end of air heating passageway is equipped with first air-supply line, second air-supply line, first air-supply line with horizontal migration bed formula rice husk gasifier intercommunication, the second air-supply line with first smoke chamber intercommunication.

Further, the method also comprises the following steps: the flue gas reheater is internally provided with a dust-containing flue gas channel, the top of the dust-containing flue gas channel is communicated with the flue gas channel, the bottom of the dust-containing flue gas channel is communicated with the dry desulfurization tower, the flue gas reheater is internally provided with a flue gas recovery channel, the first end of the flue gas recovery channel is connected to a pipeline between a dust removal cloth bag and a chimney through a connecting pipe, the second end of the flue gas recovery channel is provided with a first flue gas recovery pipe and a second flue gas recovery pipe, and the first flue gas recovery pipe is communicated with the horizontal moving bed type rice hull gasification furnace; the second smoke recovery pipe is communicated with the first smoke chamber.

Furthermore, air volume adjusting devices are mounted on the first air inlet pipe, the second air inlet pipe, the first smoke recycling pipe and the second smoke recycling pipe, and the proportion of air entering the horizontal moving type rice hull gasification furnace and dust removal smoke can be accurately controlled through the air volume adjusting devices.

Compared with the prior art, the utility model provides a high-efficient portable rice husk charcoal cogeneration device has following beneficial effect:

1. the utility model discloses set up exhaust-heat steam boiler, the high temperature gas that the horizontal migration bed formula rice husk gasification stove produced lets in the exhaust-heat boiler and fully burns, carries out make full use of with the energy.

2. The utility model discloses set up flue gas processing apparatus, install SNCR desulphurization unit, SCR in exhaust-heat boiler simultaneously and take off a round pin device to carry out innoxious processing to the gas that discharges.

3. The utility model discloses set up rice husk storehouse and spiral feeder, evenly place the rice husk raw materials in horizontal migration bed formula rice husk gasifier through the cooperation of rice husk storehouse and spiral feeder.

Drawings

Fig. 1 is a schematic structural diagram of a high-efficiency moving bed type rice hull carbon heat cogeneration device.

Wherein: 1-horizontal moving bed type rice hull gasification furnace; 101 a conveyor belt; 201-a first smoking chamber; 202-a second smoking chamber; 203-a third smoking chamber; 3-a dry desulfurization tower; 4-a dust removal cloth bag; 5-a chimney; 6-induced draft fan; 7-SNCR desulfurization unit; 8-convection evaporator; 9-SCR denitration device; 10-rice hull bin; 11-a screw feeding device; 12-an air preheater; 13-flue gas reheater; 14-a first air inlet pipe; 15-a second air inlet pipe; 16-a first flue gas recovery tube; 17-a second flue gas recovery pipe; 18-a windbox; 19-steam drum.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

The present invention will be described in detail with reference to the drawings, and in order to describe the embodiments of the present invention in detail, the cross-sectional view showing the structure of the device will not be enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Meanwhile, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted, connected and connected" in the present application are to be understood broadly, unless otherwise explicitly stated or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or 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.

As shown in fig. 1, the utility model provides a high-efficient moving bed formula rice husk charcoal combined heat and power generation device, include: the horizontal moving bed type rice hull gasification furnace 1 is characterized in that a conveyor belt 101 is arranged in the horizontal moving bed type rice hull gasification furnace 1, the conveyor belt 101 conveys from left to right, a rice hull feeding hole is formed in the upper portion of the left end of the conveyor belt 101, a rice hull carbon discharging hole is formed in the lower right portion of the conveyor belt 101, and a fuel gas outlet is formed in the top of the horizontal moving bed type rice hull gasification furnace 1; the rice hulls enter the conveying belt 101 in the horizontal moving bed type rice hull gasification furnace 1 from the rice hull feeding hole and are conveyed from left to right, the rice hulls on the conveying belt are carbonized to form rice hull carbon by controlling the proportion of oxygen entering the horizontal moving bed type rice hull gasification furnace 1, the rice hull carbon is separated from the conveying belt 101 and then is discharged from the rice hull carbon discharging hole, and high-temperature fuel gas is discharged from the fuel gas outlet.

Further comprising: the waste heat steam boiler is communicated with the horizontal moving bed type rice hull gasification furnace 1 through a high-temperature gas pipeline, a first smoke chamber 201, a second smoke chamber 202 and a third smoke chamber 203 are arranged in the waste heat steam boiler, the first smoke chamber 201 is communicated with the second smoke chamber 202, the second smoke chamber 202 is communicated with the third smoke chamber 203, a convection evaporator 8 is installed in the second smoke chamber 202, a gas inlet is formed in the first smoke chamber 201, the first end of the high-temperature gas pipeline is communicated with a gas outlet, and the second end of the high-temperature gas is communicated with the gas inlet; the flue gas treatment device comprises: the system comprises a dry desulfurization tower 3, a dust removal cloth bag 4, an induced draft fan 6 and a chimney 5, wherein flue gas generated by a waste heat steam boiler is introduced into the dry desulfurization tower 3, the dry desulfurization tower 3 is communicated with the dust removal cloth bag 4, the dust removal cloth bag 4 is communicated with the chimney 5, and the induced draft fan 6 is arranged on a pipeline between the dust removal cloth bag 4 and the chimney 5; high-temperature gas is discharged outwards from the gas outlet and then enters the high-temperature gas pipeline and enters the first smoke chamber 201 through the high-temperature gas pipeline, the high-temperature gas is combusted in the second smoke chamber to release heat and exchanges heat with the convection evaporator 8, the convection evaporator 8 is connected with the steam pocket 19, a large amount of steam is generated in the steam pocket 19 after water in the convection evaporator is boiled, and power is generated by utilizing the steam to recover and store energy; and the flue gas generated after the high-temperature gas is combusted is discharged from a third flue chamber, then sequentially enters a dry-method desulfurizing tower 3 and a dust-removing cloth bag 4 for purification treatment, and finally is discharged outwards through a chimney 5.

In order to further improve the holistic harmful gas throughput of device, the utility model discloses installation SNCR desulphurization unit 7 in the first smoke chamber 201 is in simultaneously installation SCR sells device 9 in the third smoke chamber 203, further reduces the harmful substance in the exhaust gas through SNCR desulphurization unit 7 and SCR sells device 9, reduces environmental pollution.

In order to solve the rice husk feed rate unstability that artifical feed or traditional machine feed brought, the problem that rice husk feed rate is difficult to control, the utility model discloses still set up: the rice husk gasification furnace comprises a rice husk bin 10 and a spiral feeding device 11, wherein a first end of the spiral feeding device 11 is communicated with an outlet at the bottom of the rice husk bin 10, a second end of the spiral feeding device 11 is communicated with a rice husk feeding port of the horizontal moving bed type rice husk gasification furnace 1, and rice husk raw materials are uniformly placed in the horizontal moving bed type rice husk gasification furnace 1 through the cooperation of the rice husk bin 10 and the spiral feeding device 11.

In order to further improve the work efficiency of horizontal migration bed formula rice husk gasifier 1, improve exhaust-heat steam boiler's energy utilization simultaneously, the utility model discloses still set up: the air preheater 12 and the air box 18, wherein a smoke outlet is formed in the third smoke chamber 203, a smoke channel is arranged in the air preheater 12 and is communicated with the smoke outlet, an air heating channel is arranged on the air preheater 12, the first end of the air heating channel is connected with the air box 18 through a connecting pipe, the second end of the air heating channel is provided with a first air inlet pipe 14 and a second air inlet pipe 15, the first air inlet pipe 14 is communicated with the horizontal moving bed type rice hull gasification furnace 1, the second air inlet pipe 15 is communicated with the first smoke chamber 201, and air volume adjusting devices are respectively arranged on the first air inlet pipe 14 and the second air inlet pipe 15; because the flue gas discharged from the third smoke chamber 203 still contains a large amount of heat, the flue gas discharged from the third smoke chamber 203 exchanges heat with air by using the air preheater 12, and the cold air is heated by the air preheater 12 and then respectively enters the horizontal moving bed type rice husk gasification furnace 1 and the first smoke chamber 201, so that the cold air is prevented from suddenly entering the horizontal moving bed type rice husk gasification furnace 1 and the first smoke chamber 201 to cause temperature instability.

In order to further improve the utilization efficiency of flue gas and improve exhaust-heat steam boiler's energy utilization simultaneously, the utility model discloses still set up: a flue gas reheater 13, wherein a dust-containing flue gas channel is arranged in the flue gas reheater 13, the top of the dust-containing flue gas channel is communicated with the flue gas channel, the bottom of the dust-containing flue gas channel is communicated with the dry desulfurization tower 3, a flue gas recovery channel is arranged in the flue gas reheater 13, the first end of the flue gas recovery channel is connected to a pipeline between the dust removal cloth bag and the chimney through a connecting pipe, the second end of the flue gas recovery channel is provided with a first flue gas recovery pipe 16 and a second flue gas recovery pipe 17, and the first flue gas recovery pipe 16 is communicated with the horizontal moving bed type rice hull gasification furnace 1; the second flue gas recovery pipe 17 is communicated with the first smoke chamber 201, and air quantity adjusting devices are respectively arranged on the first flue gas recovery pipe 16 and the second flue gas recovery pipe 17; part of the flue gas is purified and filtered by a dry desulfurization tower 3 and a dust removal cloth bag 4, then is heated by a flue gas reheater 13 to increase the temperature, and then flows back into the horizontal moving bed type rice hull gasification furnace 1 and the first smoke chamber 201, so that the oxygen content in the horizontal moving bed type rice hull gasification furnace 1 can be effectively controlled by injecting the flue gas into the horizontal moving bed type rice hull gasification furnace 1; reinjection into the flue gas can make the combustible substance in the flue gas fully burn in the first smoke chamber 201 to carry out circulation purification with the flue gas, improve the flue gas treatment effect.

Principle of operation

Putting the rice hull raw materials into a rice hull bin 10, and uniformly placing the rice hull raw materials in a horizontal moving bed type rice hull gasification furnace 1 through the cooperation of the rice hull bin 10 and a spiral feeding device 11; rice hulls enter a conveyor belt 101 in a horizontal moving bed type rice hull gasification furnace 1 from a rice hull feeding hole and are conveyed from left to right, the rice hulls on the conveyor belt are carbonized to form rice hull carbon by controlling the proportion of oxygen entering the horizontal moving bed type rice hull gasification furnace 1, the rice hull carbon is separated from the conveyor belt 101 and then is discharged from a rice hull carbon discharging hole, and high-temperature fuel gas is discharged from a fuel gas outlet; high-temperature gas is discharged outwards from a gas outlet and then enters a high-temperature gas pipeline and enters a first smoke chamber 201 through the high-temperature gas pipeline, the high-temperature gas is combusted in a second smoke chamber to release heat and exchanges heat with a convection evaporator 8 to effectively utilize the energy in the high-temperature gas, flue gas generated after the high-temperature gas is combusted is discharged from a third smoke chamber and then sequentially enters a dry-method desulfurizing tower 3 and a dust removing cloth bag 4 to be purified and finally is discharged outwards through a chimney 5, and meanwhile, harmful substances in the discharged gas are further reduced through an SNCR (selective non catalytic reduction) desulfurizing device 7 and an SCR (selective catalytic reduction) denitration device 9, so that the environmental pollution is reduced; because the flue gas discharged from the third smoke chamber 203 still contains a large amount of heat, the flue gas discharged from the third smoke chamber 203 exchanges heat with air by using the air preheater 12, and the cold air is heated by the air preheater 12 and then respectively enters the horizontal moving bed type rice hull gasification furnace 1 and the first smoke chamber 201, so that the cold air is prevented from suddenly entering the horizontal moving bed type rice hull gasification furnace 1 and the first smoke chamber 201 to cause unstable temperature; part of the flue gas is purified and filtered by a dry desulfurization tower 3 and a dust removal cloth bag 4, then is heated by a flue gas reheater 13 to increase the temperature, and then flows back into the horizontal moving bed type rice hull gasification furnace 1 and the first smoke chamber 201, so that the oxygen content in the horizontal moving bed type rice hull gasification furnace 1 can be effectively controlled by injecting the flue gas into the horizontal moving bed type rice hull gasification furnace 1; reinjection into the flue gas can make the combustible substance in the flue gas fully burn in the first smoke chamber 201 to carry out circulation purification with the flue gas, improve the flue gas treatment effect.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims (7)

1. The utility model provides a high-efficient moving bed formula rice husk charcoal cogeneration device, includes: horizontal migration bed formula rice husk gasifier (1), its characterized in that still includes: exhaust-heat steam boiler, flue gas processing apparatus, exhaust-heat steam boiler pass through high temperature gas pipeline with horizontal moving bed formula rice husk gasifier (1) intercommunication, flue gas processing apparatus includes: dry desulfurization tower (3), dust removal sack (4), draught fan (6), chimney (5), exhaust-heat steam boiler produces the flue gas and lets in dry desulfurization tower (3), dry desulfurization tower (3) with dust removal sack (4) intercommunication, dust removal sack (4) with chimney (5) intercommunication, draught fan (6) are installed dust removal sack (4) with on the pipeline between chimney (5).

2. The efficient moving bed type rice husk and carbon heat cogeneration device according to claim 1 is characterized in that a conveyor belt (101) is arranged in the horizontal moving bed type rice husk gasification furnace (1), the conveyor belt (101) conveys from left to right, a rice husk feeding hole is formed in the upper portion of the left end of the conveyor belt (101), a rice husk carbon discharging hole is formed in the lower right portion of the conveyor belt (101), and a fuel gas outlet is formed in the top portion of the horizontal moving bed type rice husk gasification furnace (1).

3. The efficient moving bed type rice hull carbon heat cogeneration device according to claim 2, wherein a first smoke chamber (201), a second smoke chamber (202) and a third smoke chamber (203) are arranged in the waste heat steam boiler, the first smoke chamber (201) is communicated with the second smoke chamber (202), the second smoke chamber (202) is communicated with the third smoke chamber (203), an SNCR desulfurization device (7) is arranged in the first smoke chamber (201), a convection evaporator (8) is arranged in the second smoke chamber (202), an SCR denitration device (9) is arranged in the third smoke chamber (203), a gas inlet is formed in the first smoke chamber (201), a first end of a high-temperature gas pipeline is communicated with a gas outlet, and a second end of the high-temperature gas is communicated with the gas inlet.

4. A high efficiency moving bed type rice hull carbon heat co-production apparatus according to claim 3, further comprising: rice husk storehouse (10), spiral feeder (11), the first end of spiral feeder (11) with the bottom export intercommunication in rice husk storehouse (10), the second end of spiral feeder (11) with the rice husk feed inlet intercommunication of horizontal migration bed formula rice husk gasifier (1).

5. The high efficiency moving bed type rice hull carbon heat cogeneration device according to claim 4, further comprising: air heater (12), bellows (18), flue gas discharge port has been seted up on third smoke chamber (203), be equipped with flue gas channel in air heater (12), flue gas channel with flue gas discharge port intercommunication, be equipped with air heating passageway on air heater (12), air heating passageway's first end pass through the connecting pipe with bellows (18) are connected, air heating passageway's second end is equipped with first air-supply line (14), second air-supply line (15), first air-supply line (14) with horizontal migration bed formula rice husk gasifier (1) intercommunication, second air-supply line (15) with first smoke chamber (201) intercommunication.

6. The high efficiency moving bed type rice hull carbon heat co-production device according to claim 5, further comprising: a flue gas reheater (13), wherein a dust-containing flue gas channel is arranged in the flue gas reheater (13), the top of the dust-containing flue gas channel is communicated with the flue gas channel, the bottom of the dust-containing flue gas channel is communicated with the dry desulfurization tower (3), a flue gas recovery channel is arranged in the flue gas reheater (13), the first end of the flue gas recovery channel is connected to a pipeline between a dust removal cloth bag and a chimney through a connecting pipe, the second end of the flue gas recovery channel is provided with a first flue gas recovery pipe (16) and a second flue gas recovery pipe (17), and the first flue gas recovery pipe (16) is communicated with the horizontal moving bed type rice hull gasification furnace (1); the second smoke recovery pipe (17) is communicated with the first smoke chamber (201).

7. The high-efficiency moving bed type rice hull carbon heat co-production device according to claim 6, wherein the first air inlet pipe (14), the second air inlet pipe (15), the first flue gas recovery pipe (16) and the second flue gas recovery pipe (17) are respectively provided with an air volume adjusting device, and the air volume adjusting device can accurately control the ratio of air entering the horizontal moving type rice hull gasification furnace (1) to the dedusting flue gas.

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