CN216668366U

CN216668366U - High-efficient recovery unit of living beings pyrolysis oil vapour waste heat

Info

Publication number: CN216668366U
Application number: CN202122685272.8U
Authority: CN
Inventors: 肖国雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-06-03
Anticipated expiration: 2031-11-04

Abstract

The utility model discloses a high-efficiency recovery device for waste heat of biomass pyrolysis oil gas, belonging to the field of energy recovery and utilization, and the high-efficiency recovery device for the waste heat of the biomass pyrolysis oil gas comprises a recovery tower, wherein an air inlet is arranged above the recovery tower; cooling water pipes which are spirally and upwardly arranged are arranged in the recovery tower, the cooling water pipes are mutually sleeved together from inside to outside to form a plurality of layers, and cooling water is introduced into the recovery tower from bottom to top; the fixed collecting box that sets up separation gas and liquid in bottom of recovery tower, be provided with gas vent and leakage fluid dram on the collecting box, through with in the flue gas direct introduction recovery tower, the passage area of flue gas increases, has reduced the condition of jam, changes the cooling water pipe into spiral helicine pipeline, can increase the space that stops in the recovery tower at condenser tube, and condenser tube's diameter reduces relatively, and the area of contact with the flue gas is bigger to the heat of radiation is more, and waste heat recovery effect is better.

Description

High-efficient recovery unit of living beings pyrolysis oil vapour waste heat

Technical Field

The utility model belongs to the field of energy recycling, and particularly relates to a biomass pyrolysis oil gas waste heat efficient recycling device.

Background

Energy is essential material for human life, and clean new energy is more and more taken attention at present, wherein biomass energy is a very important new energy.

The chimney for producing charcoal by traditional biomass pyrolysis directly discharges smoke outwards, the smoke contains a large amount of biomass oil, wood gas and the like, and the direct discharge not only wastes energy but also pollutes the environment; the discharged flue gas contains a large amount of waste heat, and is not effectively utilized. The Chinese patent 2009200629395 previously filed by the applicant discloses an environment-friendly pyrolysis furnace which can recover the components and waste heat in the flue gas; but has the following problems: firstly, the flue gas gets into from the bottom of recovery tower, and the flue gas is discharged from the recovery tower top, contains a large amount of bio-oil, has polluted the environment, has wasted the energy, and secondly the hot water temperature of recovery is low, and the usage is little, and commercial value is low, and the cost of transportation is high, and thirdly because the bio-oil gas is walked in the steel pipe, blocks up the pipeline after the cooling, does not cool off and has polluted the environment again, has wasted the energy.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems, and provides a biomass pyrolysis oil gas waste heat efficient recovery device which can recover more than 95% of waste heat, reduce the blockage of a flue gas circulation channel, improve the condensation effect and improve the waste heat recovery effect.

In order to realize the purpose, the utility model adopts the technical scheme that: the high-efficiency recovery device for the waste heat of the biomass pyrolysis oil gas comprises a recovery tower, wherein an air inlet is arranged above the recovery tower;

cooling water pipes which are spirally and upwardly arranged are arranged in the recovery tower, the cooling water pipes are mutually sleeved together from inside to outside to form a plurality of layers, and cooling water is introduced into the recovery tower from bottom to top;

the bottom of the recovery tower is fixedly provided with a collecting box for separating gas and liquid, and the collecting box is provided with an exhaust port and a liquid outlet.

As a further improvement of the technical scheme, a connecting pipe is fixedly arranged at the top of the recovery tower, and an air inlet channel communicated with the air inlet is arranged on the side surface of the connecting pipe.

As a further improvement of the above technical scheme, a top cover is fixedly arranged at the top of the connecting pipe, and a plurality of drain pipes communicated with the water outlet of the cooling water pipe are fixedly connected to the top cover;

the water outlet end of the water discharge pipe is connected with the first storage tank.

As a further improvement of the technical scheme, the drain pipe is provided with a connecting box.

As a further improvement of the technical scheme, the water inlet end of the cooling water pipe is connected with a second storage tank;

a flow dividing box is arranged between the second storage box and the cooling water pipe, and one side of the water inlet end of the flow dividing box is connected with a delivery pump.

As a further improvement of the technical scheme, the cooling water pipes are arranged in the upward spiral direction and are sleeved with each other from inside to outside.

As a further improvement of the technical proposal, the bottom wall of the inner cavity of the collecting box is in threaded connection with a blocking pipe, the upper side of the blocking pipe is provided with a funnel, the top edge of the funnel is contacted with the inner cavity of the collecting box,

the downside of funnel stretches into in the separation pipe, and be provided with the clearance between the separation pipe, the funnel with connect through the round pin axle between the separation pipe, the round pin axle of connecting is located in the clearance.

As a further improvement of the technical scheme, an insulating layer is fixedly arranged on the outer side surface of the recovery tower.

As a further improvement of the technical scheme, the cooling water pipes are spirally arranged from inside to outside in a horizontal manner, a plurality of layers are arranged from bottom to top, and each layer is communicated through a connecting pipe.

The utility model has the beneficial effects that:

1. the utility model provides a high-efficiency recovery device for waste heat of biomass pyrolysis oil gas, which is characterized in that flue gas is directly introduced into a recovery tower, the channel area of the flue gas is increased, the blocking condition is reduced, a cooling water pipe is changed into a spiral pipeline, the staying space of the cooling water pipe in the recovery tower can be increased, the diameter of the cooling water pipe is relatively reduced, the contact area with the flue gas is larger, and therefore more heat is radiated and the waste heat recovery effect is better.

2. The high-temperature flue gas enters the recovery tower from the top of the recovery tower and meets the heated high-temperature hot water to obtain high-temperature hot water at the temperature of more than 90 ℃. The hot water with the temperature of more than 90 ℃ can be used as boiler make-up water and can also be used as industrial hot water, the transportation cost is reduced by half compared with that of hot water with the temperature of about 50 ℃, and the transportation cost of 15 kilometers per ton of hot water is about 6 yuan under the condition that the cost of gasoline per liter is 7 yuan. The method has the advantages that 1 ton of natural gas with the temperature of over 90 ℃ is produced, the consumption of hot water is about 10 cubic meters, or the electricity consumption is 80 ℃, and the method has high commercial value. The waste heat of 2.6 million tons of woody biomass with 20 percent of water content can be pyrolyzed to obtain 25 million tons of high-temperature hot water with the temperature of more than 90 ℃, the value is 750 million yuan, and the utilization rate of the waste heat reaches more than 95 percent.

3. According to the utility model, the cooled biomass oil and gas at the bottom of the recovery tower are contacted with the low-temperature cooling water pipe, the temperature is continuously reduced to be close to the temperature of low-temperature cooling water, full condensation is achieved, the content of organic matters in the gas is about 2%, water vapor in the biomass oil is fully condensed, latent heat is released, the temperature of cooling water is increased, and the recovery rate of the biomass oil is more than 98%.

4. The cooling water pipe is changed into a spiral pipeline, water flows in the pipeline, smoke flows out of the pipeline, the diameter of the cooling water pipe is relatively reduced, the contact area of the cooling water pipe and the smoke is larger, more absorbed heat is generated, and the waste heat recovery effect is better. The space of the cooling water pipe staying in the recovery tower can be increased, the gap distance between the pipes is large and is more than 120mm, and the biomass oil is not easy to block the recovery tower.

5. The wood tar that deposits in the recovery tower that can be convenient is cleared up, at the in-process of clearance, only needs to stop to pour into the comdenstion water into to condenser tube, then under the effect of high temperature flue gas, can make the wood tar of deposit melt to reduce condenser tube and recovery tower on the surface the wood tar of deposit, the clearance is convenient.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;

FIG. 2 is a schematic cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic view of a portion of the enlarged structure at B in FIG. 1;

FIG. 4 is a schematic view of the overall structure of embodiment 2 of the present invention;

fig. 5 is a schematic cross-sectional view in the direction C-C in fig. 4.

The text labels in the figures are represented as: 10. a recovery column; 101. a heat-insulating layer; 11. a cooling water pipe; 12. a collection box; 121. an exhaust port; 122. a liquid discharge port; 123. a barrier tube; 124. a funnel; 13. connecting a connecting pipe; 14. an air intake passage; 15. a top cover; 16. a drain pipe; 161. a connection box; 17. a first storage box; 18. a second storage box; 19. a shunt box; 20. a delivery pump.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

Example 1:

as shown in the attached fig. 1-3, as a specific embodiment of the present invention, the specific structure of the present invention is: the device for efficiently recovering the waste heat of the biomass pyrolysis oil gas comprises a recovery tower 10, wherein an air inlet is arranged above the recovery tower 10, the air inlet is connected with a smoke exhaust chimney of a biomass pyrolysis furnace, and the smoke exhausted from the chimney is high-temperature smoke;

the recovery tower 10 is internally provided with cooling water pipes 11 which are spirally and upwardly arranged, the cooling water pipes 11 are mutually sleeved from inside to outside to form a plurality of layers (as shown in the attached figure 2 of the specification), and cooling water is introduced into the recovery tower from bottom to top, specifically, the cooling water pipes 11 on each layer are spiral pipelines, and the spiral pipelines can prolong the length of the cooling water pipes 11 in the recovery tower 10 as much as possible, so that the cooling water pipes 11 are in contact with heat carried by flue gas as much as possible, thereby improving the waste heat recovery efficiency and achieving a better effect on the condensation of the flue gas;

the bottom of the recovery tower 10 is fixedly provided with a collection box 12 for separating gas and liquid, the collection box 12 mainly recovers wood tar and wood gas components existing in flue gas, the collection box 12 is provided with an exhaust port 121 and a liquid discharge port 122, the recovered wood gas is discharged through the exhaust port 121, and the wood tar is discharged through the liquid discharge port 122.

As shown in the attached figure 1 of the specification, the method is further optimized on the basis of the embodiment: the fixed connector 13 that sets up in top of recovery tower 10, set up inlet channel 14 with the air inlet intercommunication on the side of connector 13, inlet channel 14 is hollow side's pipe, interconnect between inlet channel 14 and the chimney of pyrolysis oven, and for the mode heat loses, sets up the heat preservation on inlet channel 14's lateral surface.

A top cover 15 is fixedly arranged at the top of the connecting pipe 13, the top cover 15 mainly seals the interior of the recovery tower 10 to prevent the loss of introduced high-temperature flue gas, and a plurality of drain pipes 16 communicated with the water outlet of the cooling water pipe 11 are fixedly connected to the top cover 15; the drain pipe 16 is provided with a connecting box 161, the connecting box 161 neatly combs the drain pipe 16, keeps warm for the drain pipe 16 and reduces heat loss, the water outlet end of the drain pipe 16 is connected with the first storage tank 17, heated water flows into the first storage tank 17 to be stored, and the heated water is provided for users needing hot water through the first storage tank 17.

As shown in the attached fig. 1 and 3 in the specification, a second storage tank 18 is connected to the water inlet end of the cooling water pipe 11; cold water is stored in the second storage tank 18 and used for condensing for standby, a diversion tank 19 is arranged between the second storage tank 18 and the cooling water pipe 11, one side of a water inlet end of the diversion tank 19 is connected with a delivery pump 20, and when smoke is cooled and condensed, the delivery pump 20 is started to drive the cold water in the second storage tank 18 to flow into the cooling water pipe 11 through the diversion tank 19, so that cooling is performed.

Example 2:

as shown in the attached figures 4 and 5 in the specification: compared with embodiment 1, on the basis of embodiment 1, in this embodiment, the cooling water pipes 11 are arranged in a spiral manner from inside to outside, and a plurality of layers (as shown in fig. 5 in the specification) are arranged from bottom to top, and each layer is communicated with the other layer through a connecting pipe.

The bottom wall of the inner cavity of the collecting box 12 is in threaded connection with a blocking pipe 123, the blocking pipe 123 is a branch pipe with internal threads, the upper side of the blocking pipe 123 is provided with a funnel 124, the top diameter of the funnel 124 is larger than the bottom diameter, the top edge of the funnel 124 is in contact with the inner cavity of the collecting box 12, when the deposited wood tar flows downwards, the wood tar directly flows into the collecting box 12 through the funnel 124,

the downside of funnel 124 stretches into in the separation pipe 123, and with be provided with the clearance between the separation pipe 123, funnel 124 with be connected through the round pin axle between the separation pipe 123, the round pin axle of connection is located in the clearance, be relatively fixed between funnel 124 and the separation pipe 123, the wood tar through funnel 124 whereabouts directly falls into in the separation pipe 123, discharges through leakage fluid dram 122 at last, and the wood gas in the flue gas then flows through the clearance between separation pipe 123 and the funnel 124 to discharge through gas vent 121, through the separation pipe 123 that sets up, can separate between wood gas and the wood tar and retrieve respectively.

Further optimization is carried out on the basis of the embodiment: an insulating layer 101 is fixedly arranged on the outer side surface of the recovery tower 10, and the insulating layer 101 is made of common insulating materials, such as foam, insulating cotton and the like, and mainly reduces heat loss.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the utility model using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments, or may be learned by practice of the utility model.

Claims

1. High-efficient recovery unit of living beings pyrolysis oil vapour waste heat, including recovery tower (10), its characterized in that: an air inlet is arranged above the recovery tower (10);

a cooling water pipe (11) which is spirally arranged is arranged in the recovery tower (10), a plurality of layers of cooling water pipes (11) are arranged, and cooling water is introduced into the recovery tower from bottom to top;

the bottom of the recovery tower (10) is fixedly provided with a collection box (12) for separating gas and liquid, and the collection box (12) is provided with an exhaust port (121) and a liquid outlet (122).

2. The biomass pyrolysis oil steam waste heat high-efficiency recovery device according to claim 1, characterized in that: the top of the recovery tower (10) is fixedly provided with a connecting pipe (13), and the side surface of the connecting pipe (13) is provided with an air inlet channel (14) communicated with an air inlet.

3. The biomass pyrolysis oil waste heat high-efficiency recovery device according to claim 2, characterized in that: a top cover (15) is fixedly arranged at the top of the connecting pipe (13), and a plurality of drain pipes (16) communicated with the water outlet of the cooling water pipe (11) are fixedly connected to the top cover (15);

the water outlet end of the water outlet pipe (16) is connected with the first storage tank (17).

4. The biomass pyrolysis oil steam waste heat high-efficiency recovery device according to claim 3, characterized in that: the drain pipe (16) is provided with a connecting box (161).

5. The biomass pyrolysis oil steam waste heat high-efficiency recovery device according to claim 4, characterized in that: the water inlet end of the cooling water pipe (11) is connected with a second storage box (18);

a shunt box (19) is arranged between the second storage box (18) and the cooling water pipe (11), and one side of the water inlet end of the shunt box (19) is connected with a delivery pump (20).

6. The biomass pyrolysis oil steam waste heat high-efficiency recovery device according to any one of claims 1 to 5, characterized in that: the cooling water pipes (11) are arranged in the upward spiral direction, and a plurality of layers are arranged from inside to outside and are mutually sleeved together.

7. The biomass pyrolysis oil steam waste heat high-efficiency recovery device according to any one of claims 1 to 5, characterized in that: the bottom wall of the inner cavity of the collecting box (12) is in threaded connection with a blocking pipe (123), the upper side of the blocking pipe (123) is provided with a funnel (124), the top edge of the funnel (124) is in contact with the inner cavity of the collecting box (12),

the downside of funnel (124) stretches into in baffling pipe (123), and with be provided with the clearance between baffling pipe (123), funnel (124) with connect through the round pin axle between baffling pipe (123), the round pin axle of connecting is located in the clearance.

8. The biomass pyrolysis oil steam waste heat high-efficiency recovery device according to claim 7, characterized in that: and an insulating layer (101) is fixedly arranged on the outer side surface of the recovery tower (10).

9. The biomass pyrolysis oil steam waste heat high-efficiency recovery device according to claim 8, characterized in that: the cooling water pipes (11) are arranged in a spiral mode from inside to outside in a horizontal mode, a plurality of layers are arranged from bottom to top, and each layer is communicated with each other through connecting pipes.