CN218781317U - Pyrolysis gasification combustion system for treating waste biomass - Google Patents

Abstract

The utility model provides a pyrolysis gasification combustion system for processing waste biomass, which comprises a pyrolysis gasification combustion furnace and a high-temperature heat exchange furnace; the pyrolysis gasification combustion furnace is used for carrying out combustion treatment on the treated biomass to generate dischargeable flue gas, and the high-temperature heat exchange furnace is used for carrying out heat recovery on the flue gas generated by combustion and supplementing the recovered heat to the pyrolysis gasification combustion furnace. The problem of among the prior art discarded biomass burn the tar that produces and handle difficulty etc. is solved, simplify the equipment structure that burns, reduce the incineration disposal cost, improve the value practicality of incineration disposal.

Description

Pyrolysis gasification combustion system for treating waste biomass

Technical Field

The utility model belongs to the technical field of abandonment living beings are handled, concretely relates to handle pyrolysis gasification combustion system of abandonment living beings.

Background

Human activities produce large amounts of waste biomass, such as: straws of grain and oil crops, branches of tree pruning and the like. In the prior art, incineration treatment of waste biomass is an effective means for realizing reduction, harmlessness and recycling. There are also two difficulties in the incineration process: 1) The tar generated by burning is not properly treated to cause environmental pollution; 2) The high water content of the waste biomass affects normal combustion.

To solve the difficulty 1), the prior art usually adopts a water spray cleaning/electrostatic trapping method to treat tar generated in a combustion process, for example, the tar is dissolved in water and then the waste water containing the tar is treated as described in the patent publication No. CN106978219A, but the treatment causes the complexity of an incineration treatment system and increases the equipment cost.

Aiming at difficulty 2), when biomass with high water content is treated, the prior art usually adopts a fuel oil/gas method to provide a large amount of supplementary heat energy for the treatment process or evaporate water before the biomass is combusted, but the two methods can increase the cost of incineration treatment and reduce the practical value.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art, provide a pyrolysis gasification combustion system who handles abandonment living beings, simplify the equipment structure among the incineration disposal process, reduce the incineration disposal cost, improve the value practicality of incineration disposal.

In order to achieve the above object of the present invention, according to a first aspect of the present invention, the present invention provides a pyrolysis gasification combustion system for processing waste biomass, comprising a pyrolysis gasification combustion furnace, the pyrolysis gasification combustion furnace comprising a pyrolysis furnace chamber and a combustion chamber; the pyrolysis hearth is sequentially divided into a primary drying section, a full drying section, a pyrolysis carbonization section and a gasification reduction section from top to bottom; a biomass inlet is formed in the top of the primary drying section, and a first hot air inlet is formed in the side wall of the primary drying section; a second hot air inlet is formed in the side wall of the full-drying section; the combustion chamber is positioned outside the hearth of the pyrolysis carbonization section and the gasification reduction section, the bottom of the combustion chamber is communicated with the bottom of the gasification reduction section, and an annular grate is arranged at the communication part of the combustion chamber and the gasification reduction section; and a third hot air inlet and a combustion flue gas outlet are formed in the side wall of the combustion chamber.

Furthermore, a blocking mechanism is arranged between the primary drying section and the full drying section.

Furthermore, block the mechanism and include a plurality of fixed stop, fixed stop evenly distributed between the relative lateral wall of furnace to be connected with the furnace lateral wall, still be equipped with adjustable fender between the fixed stop, adjustable fender's upper surface is connected with the transmission pull rod, and the transmission pull rod runs through pyrolysis gasification combustion furnace top, and the one end that the transmission pull rod is located pyrolysis gasification combustion furnace outside still is connected with and carries the pulling piece.

Furthermore, the upper surface of the movable baffle is in an inclined plane shape.

Furthermore, the upper surface of the fixed baffle is in an inclined plane shape.

Furthermore, the bottom of the pyrolysis gasification combustion furnace is also provided with a combustion ash hopper.

The high-temperature heat exchange furnace is internally provided with a heat exchange furnace chamber, the side wall of the heat exchange furnace chamber is provided with a high-temperature flue gas inlet, and the high-temperature flue gas inlet is communicated with a combustion flue gas outlet; a heat exchange element is arranged in the heat exchange hearth; the heat exchange furnace chamber is internally provided with a heat exchange space, the heat exchange space penetrates through the heat exchange furnace chamber, and the heat exchange space comprises a first heat exchange space, a second heat exchange space and a third heat exchange space; throttling elements are arranged at the inlets of the heat exchange spaces, the outlet of the first heat exchange space is communicated with the first hot air inlet, the outlet of the second heat exchange space is communicated with the second hot air inlet, and the outlet of the third heat exchange space is communicated with the third hot air inlet.

Furthermore, the heat exchange element comprises a high-temperature pipeline and a plurality of positioning pore plates, the positioning pore plates are connected with the side wall of the heat exchange hearth, and the plurality of positioning pore plates are distributed in the middle of the heat exchange hearth in a laminated manner; the positioning hole plate comprises positioning through holes, and the high-temperature pipeline sequentially penetrates through the positioning through holes in the stacked positioning hole plates and is connected with the positioning hole plates.

Furthermore, the first heat exchange space is positioned above the positioning pore plate at the highest layer, and the second heat exchange space and the third heat exchange space are positioned between two adjacent positioning pore plates.

Further, a lateral furnace door is arranged at the bottom end of the side wall of the heat exchange furnace chamber.

The utility model discloses a rationale and beneficial effect: waste biomass material gets into the primary drying section from the living beings entrance, and first hot-blast mouthful lets in hot-blastly, carries out first stoving to waste biomass, and waste biomass slowly reaches the full drying section down, and the hot-blast entry of second lets in hot-blastly, carries out the secondary to waste biomass and dries, reduces waste biomass's water content, makes it change by the burning. The dried waste biomass slowly descends to a pyrolysis carbonization section, when the temperature of the waste biomass reaches about 500 ℃, pyrolysis reaction is rapidly carried out, and a large amount of tar smoke and combustible gas are released. The pyrolysis remainder is charcoal, the charcoal falls into the lower part of the pyrolysis hearth, hot air at the first hot air inlet and the second hot air inlet reaches the west part of the pyrolysis hearth, the charcoal is re-combusted, the temperature of the bottom of the pyrolysis hearth is raised to about 1000 ℃, tar and combustible gas generated by pyrolysis and carbonization react with the charcoal through high-temperature water vapor to generate hydrogen and carbon monoxide. The ash falls into the bottom of the furnace after combustion, hydrogen and carbon monoxide enter the combustion chamber through the grate, and quantitative hot air is introduced into the third hot air inlet to carry out secondary combustion on the hydrogen and the carbon monoxide to generate carbon dioxide and water.

The generated high-temperature carbon dioxide enters the heat exchange furnace from the combustion flue gas outlet through the high-temperature flue gas inlet to heat the heat exchange element, the normal-temperature gas is introduced into the inlet of the first heat exchange space, the inlet of the second heat exchange space and the inlet of the third heat exchange space, the normal-temperature gas is heated through the heat exchange element, the outlet of the first heat exchange space leads to the first hot air inlet, the outlet of the second heat exchange space leads to the second hot air inlet, and the outlet of the third heat exchange space leads to the third hot air inlet to supply heat for the pyrolysis furnace.

In the burning process of tar and harmful gas, if the air/fuel gas ratio is low, the tar and the harmful gas cannot be completely burnt out. If the air/gas ratio is too high, the combustion temperature will drop and even a flame-out will occur. Therefore, in order to ensure that tar and other harmful gases are thoroughly decomposed, proportional combustion is carried out in the combustion process, and the inlets of the first heat exchange space, the second heat exchange space and the third heat exchange space are respectively provided with a throttling element so as to control the air flow of the first hot air inlet, the second hot air inlet and the third hot air inlet, so that tar and other harmful gases can be thoroughly decomposed.

According to foretell theory of the essence, pyrolysis gasification combustion system can thoroughly handle the tar that produces behind the burning of abandonment living beings to high temperature flue gas to after the burning carries out heat recovery, heats normal atmospheric temperature gas through the heat of retrieving, for the processing procedure supplements a large amount of heat energy, allows the high waste biomass who contains water of direct processing, consequently the utility model discloses a simple structure is handled tar, reduces the complexity of equipment to reduce the treatment cost through heat recovery, improve equipment's practical value.

Drawings

FIG. 1 is a schematic diagram of a pyrolysis gasification combustion system for processing waste biomass according to the present invention;

FIG. 2 is a schematic view of the pyrolysis and gasification combustion furnace of the present invention;

fig. 3 is a schematic top view of the blocking structure of the present invention;

fig. 4 is a schematic front view of the blocking structure of the present invention;

FIG. 5 is a schematic structural view of the high temperature heat exchange furnace of the present invention;

fig. 6 is a schematic front view of the heat exchange element of the present invention;

fig. 7 is a schematic top view of the heat exchange element of the present invention.

Reference numerals are as follows: the device comprises a pyrolysis gasification combustion furnace 1, a biomass inlet 100, a primary drying section 101, a full drying section 102, a pyrolysis carbonization section 103, a gasification reduction section 104, an annular grate 105, a first hot air inlet 106, a second hot air inlet 107, a blocking mechanism 108, a combustion ash hopper 109, a movable baffle 118, a fixed baffle 128, a transmission pull rod 138, a lifting piece 148, a combustion chamber 2, a spray pipe 201, a third hot air inlet 203, a combustion flue gas outlet 204, a mixed flow induced draft fan 3, a high-temperature heat exchange furnace 4, a high-temperature flue gas inlet 401, a hot flue gas converging area 402, a heat exchange element 403, a cold flue gas converging area 404, a side furnace door 405, a heat exchange ash hopper 406, a high-temperature pipeline 413, a positioning orifice plate 423, an inlet 501 of a first heat exchange space, an outlet 502 of the first heat exchange space, an inlet 601 of a second heat exchange space, an outlet 602 of the second heat exchange space, an inlet 701 of the third heat exchange space, an outlet 702 of the third heat exchange space, and a throttling element 8.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

As shown in the attached figure 1, the utility model provides a pyrolysis gasification combustion system for treating waste biomass, which comprises a pyrolysis gasification combustion furnace 1 and a high-temperature heat exchange furnace 4; the pyrolysis and gasification combustion furnace 1 is used for carrying out combustion treatment on the treated biomass to generate dischargeable flue gas, and the high-temperature heat exchange furnace 4 is used for carrying out heat recovery on the flue gas generated by combustion and supplementing the recovered heat to the pyrolysis and gasification combustion furnace 1. Specifically, in order to facilitate the arrangement of the plurality of pyrolysis-gasification combustion furnaces 1 and the high-temperature heat exchange furnace 4, the pyrolysis-gasification combustion furnace 1 and the high-temperature heat exchange furnace 4 are both square in shape.

Preferably, the pyrolysis-gasification combustion furnace 1 is a hollow shaft furnace with a simple structure, and a pyrolysis hearth is provided inside the pyrolysis-gasification combustion furnace 1, and the shape of the pyrolysis hearth is the same as that of the pyrolysis-gasification combustion furnace 1. As shown in fig. 2, the pyrolysis and gasification combustion furnace 1 is sequentially divided into a primary drying section 101, a full drying section 102, a pyrolysis and carbonization section 103 and a gasification reduction section 104 from top to bottom; a biomass inlet 100 is formed in the top of the primary drying section 101, a combustion furnace cover is further arranged at the biomass inlet 100, after waste biomass is loaded from the biomass inlet 100, the combustion furnace cover is covered, and the waste biomass enters the primary drying section 101;

a first hot air inlet 106 is formed in the side wall of the primary drying section 101; a second hot air inlet 107 is formed in the side wall of the full-drying section 102; as shown in fig. 2, the first hot air inlet 106 and the second hot air inlet 107 are both communicated with the outside of the pyrolysis and gasification combustion furnace 1, and the first hot air inlet 106 and the second hot air inlet 107 are both disposed on the left side wall of the furnace chamber.

As shown in fig. 2, a blocking mechanism 108 is further disposed between the primary drying section 101 and the total drying section 102. The blocking mechanism 108 is used for preventing the waste biomass from entering the full-drying section 102 from the primary drying section 101, and simultaneously avoiding air mixing between the full-drying section 102 and the primary drying section 101; as shown in FIG. 2, in the present embodiment, the blocking mechanism 108 is preferably of a bell-type; the blocking mechanism 108 comprises a plurality of fixed baffles 128, the fixed baffles 128 being evenly distributed between and connected to opposite sidewalls of the furnace.

As shown in fig. 2 and fig. 3, the number of the fixed baffle plates 128 is 3, the fixed baffle plates 128 are in a strip shape, two ends of the fixed baffle plates 128 are connected with the front side wall and the rear side edge of the hearth, the left side surface of the fixed baffle plate 128 close to the left is connected with the left side surface of the hearth, and the right side surface of the fixed baffle plate 128 close to the right is connected with the right side surface of the hearth; as shown in fig. 2 and fig. 3, a movable baffle 118 is further disposed between the fixed baffles 128, the movable baffle 118 is in a long strip shape, the upper surface of the movable baffle 118 is connected with a transmission pull rod 138, the transmission pull rod 138 penetrates through the top of the pyrolysis and gasification combustion furnace 1, and one end of the transmission pull rod 138, which is located outside the pyrolysis and gasification combustion furnace 1, is further connected with a pulling member 148; preferably, the pull member 148 is an annular member; as shown in fig. 4, when the pulling member 148 is lifted, the driving rod 138 drives the movable baffle 118 to move upwards, a passage is formed between the movable baffle 118 and the fixed baffle 128, and the waste biomass in the primary drying section 101 passes through the blocking mechanism 108 to the full drying section 102.

As shown in fig. 3, in order to lift the driving rods 138 and avoid the tilting of the movable baffle 118, 2,2 driving rods 138 are respectively located at two ends of the upper surface of the movable baffle 118.

As shown in fig. 2, in order to allow the waste biomass to smoothly pass through the blocking device and prevent the waste biomass from being accumulated above the fixed damper 128 and the movable damper 118, the upper surfaces of the movable damper 118 and the fixed damper 128 are formed in an inclined surface shape.

As shown in fig. 2, an annular combustion chamber 2 is further arranged outside the hearth of the pyrolysis carbonization section 103 and the gasification reduction section 104, the bottom of the combustion chamber 2 is communicated with the bottom of the gasification reduction section 104, and an annular grate 105 is further arranged at the communication position of the combustion chamber 2 and the gasification reduction section 104;

as shown in fig. 2, the bottom of the pyrolysis gasification combustion furnace 1 is further provided with a combustion ash hopper 109; a spray pipe 201 is also arranged in the combustion chamber 2; an air vent is arranged in the annular grate 105; the charcoal and tar are intercepted by the annular grate 105 after being combusted, and fall into the combustion ash hopper 109, and the generated carbon monoxide and hydrogen pass through the vent and are introduced into the combustion chamber 2 through the spray pipe 201 for secondary combustion; a third hot air inlet 203 and a combustion flue gas outlet 204 are formed in the side wall of the combustion chamber 2; preferably, the third hot air inlet 203 and the combustion flue gas outlet 204 are located immediately below the second hot air inlet 107 in sequence.

As shown in fig. 5, a heat exchange furnace chamber is arranged inside the high-temperature heat exchange furnace 4, a high-temperature flue gas inlet 401 is formed in the side wall of the heat exchange furnace chamber, and the high-temperature flue gas inlet 401 is communicated with the combustion flue gas outlet 204; a heat exchange element 403 is arranged in the heat exchange hearth; a cold smoke collecting area 404 is arranged above the heat exchange element 403, and a hot smoke collecting area 402 is arranged below the heat exchange element 403; the heat exchange furnace chamber is internally provided with a heat exchange space, the heat exchange space penetrates through the heat exchange furnace chamber from left to right, and the heat exchange space comprises a first heat exchange space, a second heat exchange space and a third heat exchange space; throttling elements 8 are arranged at the inlets of the heat exchange spaces, the outlet 502 of the first heat exchange space is communicated with the first hot air inlet 106, the outlet 602 of the second heat exchange space is communicated with the second hot air inlet 107, and the outlet 702 of the third heat exchange space is communicated with the third hot air inlet 203. Specifically, normal temperature combustion air is introduced into the inlet 501 of the first heat exchange space, the inlet 601 of the second heat exchange space and the inlet 701 of the third heat exchange space.

As shown in fig. 6 and 7, the heat exchange element 403 includes a high temperature pipeline 413 and a plurality of positioning hole plates 423, the positioning hole plates 423 are connected with the side wall of the heat exchange furnace, and the plurality of positioning hole plates 423 are horizontally stacked and distributed in the middle of the heat exchange furnace; the positioning pore plate 423 comprises a positioning through hole, and the high-temperature pipeline 413 sequentially passes through the positioning through holes on the laminated positioning pore plate 423 and is fixedly connected with the positioning pore plate 423. Preferably, the high temperature pipeline 413 may be a ceramic pipe or a metal pipe; the number of the positioning through holes on one positioning orifice plate 423 is the same as that of the high-temperature pipelines 413, and the positioning through holes are uniformly distributed on the positioning orifice plate 423.

As shown in fig. 5, since the temperature of the first hot air inlet 106 is lower than that of the second hot air inlet 107, the first heat exchange space is located above the positioning orifice plate 423 at the highest layer, and the second heat exchange space and the third heat exchange space are located between two adjacent positioning orifice plates 423; preferably, the number of the positioning orifice plates 423 is 3, the second heat exchange space is located between the uppermost positioning orifice plate 423 and the second positioning orifice plate 423, and the third heat exchange space is located between the second positioning orifice plate 423 and the lowermost positioning orifice plate 423.

As shown in fig. 5, in this embodiment, the inner space of the heat exchange furnace is large, and the temperature in the heat exchange furnace is as high as more than 1000 degrees, so that in addition to heat recovery, the heat exchange furnace also allows building materials to be calcined, thereby facilitating the building materials to be put in and taken out, the bottom end of the side wall of the heat exchange furnace is provided with a side furnace door 405, and the bottom of the high temperature heat exchange furnace 4 is further provided with a heat exchange ash bucket 406.

In order to avoid the gas leakage of the pyrolysis gasification combustion furnace 1 and the high-temperature heat exchange furnace 4, the pyrolysis gasification combustion system requires to maintain negative pressure, and the temperature is reduced after the delay of combustion passes through the high-temperature heat exchange furnace 4, so that the pyrolysis gasification combustion system is not suitable for using a fan for drainage. Therefore, the present embodiment adopts an air chilling method to cool, and quantitatively introduces the normal temperature mixed air flow, so that the temperature of the mixed air flow is reduced to about 150 ℃, and the mixed air flow is allowed to be directly pumped by a conventional blower. As shown in fig. 1, a mixed flow induced draft fan 3 is further disposed between the outlet 502 of the first heat exchange space and the first hot air inlet 106.

The specific use steps are as follows:

the primary drying section 101 holds waste biomass to be dried, and mixed flow air with the temperature of 150 ℃ is input into the first hot air inlet 106 to primarily blow and dry the waste biomass; after primary drying, the lifting piece 148 is lifted, the waste biomass enters the full-drying section 102 through the blocking mechanism 108, high-temperature combustion air is input into the second hot air inlet 107, and the waste biomass is quickly dried completely.

The lower end of the pyrolysis hearth is provided with red hot charcoal, the full-dry biomass continues to move downwards and enters a pyrolysis carbonization section 103 with higher temperature, the temperature rises to about 500 ℃, and the pyrolysis reaction is firstly generated when the full-dry biomass generates the rapid pyrolysis reaction. At this stage, the pyrolysis of the fully dried biomass releases combustible gases containing various components, accompanied by a large amount of tar fumes, with the remainder of the pyrolysis being charcoal, which falls to the bottom of the pyrolysis furnace as new red hot charcoal. The red hot charcoal in the pyrolysis furnace chamber can be maintained for a long time without flameout, and when the pyrolysis gasification combustion furnace 1 allows, the temperature can be raised by inputting primary air, so that the pyrolysis gasification combustion furnace 1 rapidly enters the running state.

At the moment, the air input from the second hot air inlet 107 enables the red hot charcoal to be burnt and heated, further combustible gas and tar are ignited, more heat energy is released, and the local heating reaches about 1000 ℃; the tar is burned and destroyed at high temperature, and the water vapor is in contact reaction with the charcoal to generate hydrogen and carbon monoxide. The generation speed of the combustible gas depends on the air flow rate of the second hot air inlet 107, so that the generation amount of the combustible gas is controlled by controlling the air flow rate of the second hot air inlet 107 through the throttling element 8 of the second heat exchange space, thereby controlling the generation amount of the hydrogen and the carbon monoxide.

Ash and slag generated after charcoal combustion are intercepted by the annular grate 105 and fall into a combustion ash hopper 109; hydrogen and carbon monoxide are introduced to the combustion chamber 2 through the annular grate 105 by means of the lance 201, and the third hot air inlet 203 introduces secondary combustion air of higher temperature to the combustion chamber 2. The flow of the secondary combustion air is controlled by the throttling element 8 of the third heat exchange space, so that the hydrogen, the carbon monoxide and the air are combusted in equal proportion to generate flue gas. By the steps, the products generated by pyrolysis, gasification and combustion of the waste biomass are subjected to secondary combustion, and residual tar and other harmful substances are completely destroyed. The flue gas is allowed to be directly discharged without water spraying and washing/electrostatic trapping.

This scheme still carries out heat recovery to exhaust flue gas. Flue gas is introduced through a high-temperature flue gas inlet 401 of the high-temperature heat exchange furnace 4, heat energy of the flue gas is recovered by the heat exchange element 403, normal-temperature combustion air is introduced into an inlet of a heat exchange space, the combustion air is preheated to high temperature by the heat exchange element 403, and the flue gas is conveyed to the pyrolysis gasification combustion furnace 1 through an outlet of the heat exchange space, so that a large amount of heat energy is additionally supplemented for the treatment process of waste biomass. The support material is dried/pyrolyzed/gasified to achieve heat supply/consumption balance.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A pyrolysis gasification combustion system for processing waste biomass is characterized in that: the device comprises a pyrolysis and gasification combustion furnace (1) which comprises a pyrolysis hearth and a combustion chamber;

the pyrolysis furnace hearth is sequentially divided into a primary drying section (101), a full drying section (102), a pyrolysis carbonization section (103) and a gasification reduction section (104) from top to bottom; a biomass inlet (100) is formed in the top of the primary drying section (101), and a first hot air inlet (106) is formed in the side wall of the primary drying section (101); a second hot air inlet (107) is formed in the side wall of the full-drying section (102);

the combustion chamber (202) is positioned outside the hearth of the pyrolysis carbonization section (103) and the gasification reduction section (104), the bottom of the combustion chamber (202) is communicated with the bottom of the gasification reduction section (104), and an annular grate (105) is arranged at the communication part of the combustion chamber (202) and the gasification reduction section (104); the side wall of the combustion chamber (202) is provided with a third hot air inlet (203) and a combustion flue gas outlet (204).

2. The pyrolysis gasification combustion system for processing waste biomass as recited in claim 1, further comprising: a blocking mechanism (108) is also arranged between the primary drying section (101) and the full drying section (102).

3. The pyrolysis gasification combustion system for processing waste biomass as recited in claim 2, further comprising: blocking mechanism (108) and including a plurality of fixed stop boards (128), fixed stop board (128) evenly distributed is between the relative lateral wall of furnace to be connected with the furnace lateral wall, still be equipped with adjustable stop board (118) between fixed stop board (128), the upper surface of adjustable stop board (118) is connected with transmission pull rod (138), transmission pull rod (138) run through pyrolysis gasification combustion furnace (1) top, transmission pull rod (138) are located pyrolysis gasification combustion furnace (1) outer one end and still are connected with and carry and draw piece (148).

4. A pyrolysis gasification combustion system for processing waste biomass as claimed in claim 3, wherein: the upper surface of the movable baffle (118) is in an inclined plane shape.

5. A pyrolysis gasification combustion system for processing waste biomass as claimed in claim 3, wherein: the upper surface of the fixed baffle (128) is in an inclined plane shape.

6. A pyrolysis gasification combustion system for processing waste biomass as claimed in claim 1, 2, 3, 4 or 5 wherein: the bottom of the pyrolysis gasification combustion furnace (1) is also provided with a combustion ash hopper (109).

7. A pyrolysis gasification combustion system for processing waste biomass in accordance with claim 1, 2, 3, 4 or 5, wherein: the high-temperature flue gas combustion furnace further comprises a high-temperature heat exchange furnace (4), wherein a heat exchange hearth is arranged inside the high-temperature heat exchange furnace (4), a high-temperature flue gas inlet (401) is formed in the side wall of the heat exchange hearth, and the high-temperature flue gas inlet (401) is communicated with the combustion flue gas outlet (204); a heat exchange element (403) is arranged in the heat exchange hearth; the heat exchange furnace also comprises a heat exchange space, the heat exchange space penetrates through the heat exchange furnace, and the heat exchange space comprises a first heat exchange space (501), a second heat exchange space (601) and a third heat exchange space (701); throttling elements are arranged at the inlets of the heat exchange spaces, an outlet (502) of the first heat exchange space is communicated with a first hot air inlet (106), an outlet (602) of the second heat exchange space is communicated with a second hot air inlet (107), and an outlet (702) of the third heat exchange space is communicated with a third hot air inlet (203).

8. The pyrolysis gasification combustion system for processing waste biomass as recited in claim 7, further comprising: the heat exchange element (403) comprises a high-temperature pipeline (413) and a plurality of positioning pore plates (423), the positioning pore plates (423) are connected with the side wall of the heat exchange hearth, and the positioning pore plates (423) are distributed in the middle of the heat exchange hearth in a stacked manner; the positioning pore plate (423) comprises a positioning through hole, and the high-temperature pipeline (413) sequentially penetrates through the positioning through holes in the laminated positioning pore plate (423) and is connected with the positioning pore plate (423).

9. The pyrolysis gasification combustion system for processing waste biomass as recited in claim 8, further comprising: the first heat exchange space (501) is positioned above the positioning pore plate (423) at the highest layer, and the second heat exchange space (601) and the third heat exchange space (701) are positioned between two adjacent positioning pore plates (423).

10. The pyrolysis gasification combustion system for processing waste biomass as claimed in claim 7, wherein: the lateral side furnace door (405) is arranged at the bottom end of the lateral wall of the heat exchange furnace chamber.

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