CN110272751A - Carbonization treatment method and carbonization treatment equipment - Google Patents

Abstract

The present invention relates to a kind of carbonization treatment methods, comprising the following steps: mixes biomass and dewatered sludge to obtain the mixture that apparent water content is 30% to 70%；And the mixture is made to carry out destructive distillation processing at 700 DEG C to 900 DEG C under anaerobic or hypoxia condition, to obtain char-forming material.Further relate to a kind of carbonization treatment equipment.

Description

Carbonization treatment method and carbonization treatment equipment

technical field

The present invention relates to a carbonization treatment method of subjecting a mixture of biomass such as chaff and dewatered sludge to dry distillation treatment to obtain carbonized materials, and a carbonization treatment apparatus used in the carbonization treatment method.

Background technique

Wastewater containing organic substances discharged from households and the like is generally subjected to wastewater treatment in sewage treatment facilities.

Organic sludge is generated during wastewater treatment, and the amount of organic sludge generated increases as the amount of treated wastewater increases. Then, the treatment and disposal of organic sludge becomes a big problem.

When disposing of organic sludge, organic sludge contains about 99.9% water, so it cannot be disposed of as it is. Therefore, for weight reduction, various treatments such as concentration and dehydration treatment or further incineration or melting have been performed at present.

As a method for reducing the amount of organic sludge, carbonization of sludge by dry distillation treatment has been proposed. Sludge contains about 45% by mass of carbon components in the matrix. Unlike incineration and smelting, carbonization treatment does not completely consume the carbon components in sludge, but generates carbonized materials with new compositions (carbonized products) by pyrolyzing (carbonizing) sludge in an oxygen-free or low-oxygen state. ) while leaving the carbon component.

When carbonizing sludge by dry distillation treatment, dewatered sludge dehydrated to a water content of about 80% by a dehydrator is used. However, when dewatered sludge is directly subjected to carbonization treatment, a part of the sludge may adhere to equipment, which may cause a problem. Therefore, the sludge is first dried to reduce the water content to, for example, about 40%, and then the dried sludge is subjected to dry distillation. For example, the following Patent Documents 1 and 2 disclose carbonization treatment equipment used for such treatment.

Fig. 8 shows an example of conventional carbonization treatment equipment. In this figure, a part denoted by reference numeral 200 is a receiving hopper, and dewatered sludge that has been dehydrated to a water content of about 80% is first received into the receiving hopper 200 . The dewatered sludge received in the receiving hopper 200 is delivered to the dryer 204 by the sludge delivery pump (constant feeder) 202, and the dewatered sludge is dried in the dryer 204 to have a predetermined, for example, about 40% water content.

The dryer 204 has a rotating drum as a drying container. The dryer 204 is configured such that sludge is supplied to the inside of the rotary drum from one end side in the axial direction, the sludge is moved axially along the inside while the rotary drum is rotated, and the sludge is dried by hot air during the movement. , the dried sludge is discharged from the other end of the rotating drum in the axial direction. Then the dried sludge is transported to the carbonization furnace 208 via the conveyor 206 and subjected to carbonization treatment. Finally, the carbonized material as a dry distillation residue is discharged from the carbonization furnace 208 .

In addition, in FIG. 8 , a component denoted by reference numeral 210 is a hot air generating furnace for generating hot air supplied to the dryer 204 . Fuel is supplied to the hot air generating furnace together with combustion air and burned to generate hot air.

In such a conventional carbonization treatment facility, it is necessary to provide a dryer 204 for drying sludge and a hot air generating furnace 210 for generating hot air for drying. Therefore, there is a problem that the number of devices constituting the carbonization treatment facility increases. Furthermore, the consumption of fuel for generating hot air leads to an increase in processing costs.

Incidentally, Patent Document 3 shows an invention on "carbonization method of aqueous organic waste", and discloses that sewage sludge and chaff are mixed and charged into a rotary kiln to produce a carbonized material. However, the carbonization treatment method described in Patent Document 3 is different from the present invention in that the method includes a step of drying sewage sludge by using a drier, and performing dry distillation treatment by using a mixture having a water content lower than that of the present invention.

Patent Document 1: JP-A-H11-33599

Patent Document 2: JP-A-H11-37644

Patent Document 3: JP-A-2011-68824

Contents of the invention

In view of the above circumstances, an object of the present invention is to provide a carbonization treatment method and a carbonization treatment facility capable of treating a sludge-containing mixture with a simple configuration that does not require drying treatment using hot air. carbonization.

Carbonization treatment method of the present invention is such carbonization treatment method, and it comprises the following steps:

mixing biomass and dewatered sludge to obtain a mixture with an apparent water content of 30% to 70%; and

The mixture is subjected to dry distillation treatment at 700° C. to 900° C. under an oxygen-free or low-oxygen condition to obtain a carbonized material.

Herein, the apparent water content is the ratio of the water weight of the mixture containing biomass and dewatered sludge to the total weight (the sum of the water weight of the mixture and the dry weight of the mixture). When the total weight of the mixture is T (g) and the water weight of the mixture is h (g), the apparent water content p (% by weight) can be expressed as follows: p=h/T×100.

In the carbonization treatment method of the present invention, the biomass may be chaff. Herein, chaff is the husk obtained from a seed or grain (such as rice or wheat) having a grain and a husk. Commonly known chaff can be used. In general, biomass may be chaff produced as a by-product from the threshing work of rice, wheat, and the like.

The chaff can be crushed in such a way that the bulk density is changed by 2 to 10 times.

Herein, bulk density is loose bulk density. To measure the bulk density, chaff was supplied into a container having an inner diameter of 2.3 cm (volume: 100 cm ³ ) from above the container. When the container is full of chaff, use a spatula to remove the heap to make it flat and measure the weight of the entire chaff in the container. Bulk density can be calculated according to the following equation.

Bulk density (g/cm ³ ) = chaff weight (g)/container volume (cm ³ )

Incidentally, according to the above measurement, the bulk density of chaff in its own shape (before crushing) is generally about 0.1 g/cm ³ . In the present invention, it is desirable to use chaff having a bulk density of 0.2 g/cm ³ to 1.0 g/cm ³ after crushing.

In the carbonization treatment method of the present invention, in the mixing step, biomass such as chaff may be mixed with the dewatered sludge by using a twin paddle mixer or a twin rod mixer.

In the carbonization treatment method of the present invention, in the mixing step, biomass such as chaff may be mixed with dewatered sludge by using a single screw pump.

Carbonization treatment equipment of the present invention is such carbonization treatment equipment, and it comprises:

a mixer configured to mix the biomass and dewatered sludge to obtain a mixture, and

a carbonization furnace configured to carbonize the mixture by retort treatment,

Wherein the carbonization treatment equipment is not equipped with a dryer to dry the dewatered sludge.

As described above, the present invention is designed to produce carbonized materials by using a mixture of biomass such as chaff and sludge (sewage sludge) instead of using unmixed sludge. The threshed chaff has been used as dressing for livestock etc., but is often difficult to dispose of. According to the present invention, biomass such as chaff can be effectively used without disposal.

In the present invention, the apparent water content of the mixture is adjusted by mixing biomass such as chaff and sludge (dewatered sludge). Therefore, a dryer and a hot air generating furnace for adjusting the water content of sludge may not be required. Therefore, simplification of the constituent devices of the carbonization treatment facility can be realized. In addition, since hot air for adjusting the water content is not required, treatment costs (fuel consumption) can be reduced.

The properties required of carbonized materials vary according to their application. Where powdered carbonized material is desired, the apparent water content of the mixture is suitably about 30% to 40%. On the other hand, in the case where a hard-to-scatter granular carbonized material is required, the apparent water content of the mixture is suitably about 60% to 70%. Therefore, since the appropriate apparent water content varies depending on the properties required of the carbonized material, in the present invention, the apparent water content of the mixture can be appropriately determined within the range of 30% to 70%.

In the present invention, in addition to the chaff of its own shape (before pulverization), pulverized chaff (chaff powder) can also be used. The use of crushed chaff allows for a more homogeneous mixing and thus improves the quality of the carbonized material to be produced.

In addition, since a mixture of chaff and dewatered sludge having a small bulk density in its own shape has a small density, this mixture is easily scattered to the exhaust gas passage side in the carbonization furnace. This may result in a decrease in the yield of carbonized material. On the other hand, the mixture of finely divided chaff and dewatered sludge may have an increased density. Therefore, this mixture is difficult to scatter in the carbonization furnace, so that the yield of carbonized material can be improved. In order to obtain such an effect, it is desirable to use chaff crushed so that the bulk density becomes 2 to 10 times.

In the mixing step of the present invention, biomass such as chaff and dewatered sludge may be mixed using a double paddle mixer or a double rod mixer.

In the case of obtaining the mixture by using chaff having a small bulk density, for example of the shape itself, a double paddle mixer or a twin-rod mixer is suitable. Generally, when the apparent water content is the same, the mixture formed by using a double paddle mixer or a twin-rod mixer is discharged in a fine loose state (in a discrete state) compared to the case of using a single screw pump mentioned below . Therefore, double paddle mixers and twin-rod mixers are suitable for obtaining finer grained carbonized materials.

Alternatively, in the mixing step of the present invention, biomass such as chaff and dewatered sludge may be mixed by using a single screw pump.

In the case of a progressive cavity pump, biomass such as chaff is mixed with dewatered sludge in a compacted state. Therefore, single screw pumps are suitable for producing mixtures with less voids and high density. In general, the mixture formed by using the single screw pump is discharged in a larger lump state than in the case of using the above-mentioned twin paddle mixer or twin rod mixer. Therefore, the single screw pump is suitable for obtaining carbonized material with a large particle size. Furthermore, in the case of using a single screw pump, it is possible to omit conveying means such as a conveyor by directly connecting the single screw pump and the carbonization furnace with a pipe or the like. In this case, the carbonization treatment equipment can be configured more simply.

The present invention as described above can provide a carbonization treatment method and a carbonization treatment facility capable of carbonizing a sludge-containing mixture with a simple configuration that does not require drying treatment using hot air.

Description of drawings

FIG. 1 is a diagram showing the configuration of a carbonization treatment facility using a carbonization treatment method according to an embodiment of the present invention.

FIG. 2 is a diagram showing a main part of the mixer in FIG. 1 .

Fig. 3 is a diagram showing an internal configuration of the carbonization furnace in Fig. 1 .

Fig. 4 is a diagram showing the configuration of a charging device of the carbonization furnace in Fig. 1 .

5 is a diagram showing the configuration of a carbonization treatment facility using a carbonization treatment method according to another embodiment of the present invention.

FIG. 6 is a diagram showing a main part of the mixer in FIG. 5 .

Fig. 7 is a diagram showing the configuration of a carbonization treatment facility using a carbonization treatment method according to still another embodiment of the present invention.

Fig. 8 is a diagram showing the overall configuration of a conventional carbonization treatment apparatus.

Explanation of Reference Signs and Symbols

1, 1B, 1C: carbonization treatment equipment

14, 64, 80: Mixer

40: carbonization furnace

specific implementation plan

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows the configuration of a carbonization treatment facility using a carbonization treatment method according to an embodiment of the present invention. The carbonization treatment equipment 1 comprises a first receiving hopper 10, a second receiving hopper 16, a mixer 14 and a carbonization furnace

40. The carbonization treatment facility 1 produces carbonized materials by utilizing organic sludge generated during wastewater treatment. In the following embodiments, the case of using chaff as biomass is mentioned as an example, but the present invention can be applied to biomass other than chaff.

The first receiving hopper 10 is a storage tank for dewatered sludge. Dewatered sludge dewatered to a water content of about 70% to 85%, typically about 80%, is received in the first receiving hopper 10 . The dewatered sludge received in the first receiving hopper 10 is conveyed to a mixer 14 by means of a constant feeder 12 .

The second receiving hopper 16 is a storage tank for chaff, and the chaff is received in the second receiving hopper 16 . The water content of the chaff is about 10%.

The second receiving hopper 16 has a downward discharge opening 16a to which a rotary valve 17 is connected. The chaff received in the second receiving hopper 16 is conveyed to the mixer 14 via the rotary valve 17 .

In the present embodiment, the dewatered sludge and chaff are quantitatively supplied to the mixer 14, specifically to the storage tank 20 of the mixer 14, to obtain an apparent water content of about 40% in the mixer 14. mixture.

The mixer 14 is a double paddle mixer, and the mixing step of the present embodiment is performed by using the mixer 14 . The mixer 14 is equipped with a paddle mixer section 21 and a storage tank 20 attached to an inlet 21 a of the paddle mixer section 21 . The paddle mixer section 21 has a pair of rotating shafts 22 and 24 (see FIG. 2 ) inside its housing, and almost flat mixing blades 26 and 28 are fixed to the respective shafts in a radial manner.

In the paddle mixer part 21, the rotating shafts 22 and 24 rotate in opposite directions to each other, and the dewatered sludge and chaff supplied from the storage tank 20 to the paddle mixer part 21 are mixed to be mixed between the mixing blades 26 and 28 at the overlap.

In mixer 14, shafts of rotation 22 and 24 rotate at unequal rates. Therefore, there is a difference in peripheral speed between the mixing blades 26 and 28, and dewatered sludge and chaff can be kneaded with high efficiency based on the difference in peripheral speed.

Mixing blades 26 and 28 are attached to the rotation shafts 22 and 24 in an oblique manner, respectively. The dewatered sludge and chaff supplied to the paddle mixer part 21 are conveyed in the axial direction by the conveying action of the mixing blades 26 and 28 while being mixed. A mixture having a predetermined apparent water content (approximately 40% in the present embodiment) obtained by mixing dewatered sludge and chaff is discharged from the outlet provided at the axial end of the mixer 14. 21b is discharged. The discharged mixture is transported to the carbonization furnace 40 by the conveyor 38 .

In the mixer 14 of this embodiment, a double-rod mixer in which the mixing blades 26 and 28 are replaced with bar-shaped rods may also be used.

The carbonization furnace 40 is an externally heated rotary kiln in which the material to be processed is dehydrated and pyrolyzed in an oxygen-free atmosphere or a low-oxygen atmosphere with an oxygen concentration of 10% or less. The carbonization step of the present embodiment is performed by using the carbonization furnace 40 .

As shown in FIG. 3 , the carbonization furnace 40 has a cylindrical still 44 as a carbonization vessel inside a furnace body 42 . A mixture (whose water content is controlled at about 40%) as a material to be treated is charged into the inside of the distiller 44 on the left end side in the figure.

The internal atmosphere of the external heating chamber 48 is heated by a combustion-supporting burner 46 provided inside the furnace body 42 . The charged mixture is first heated by the heating atmosphere in the external heating chamber 48 . Then, the combustible gas contained in the mixture escapes into the atmosphere of the external heating chamber 48 through the injection pipe 45 provided on the distiller 44, and the combustible gas is ignited. Thereafter, the mixture in still 44 is heated by combustion of the combustible gas. At this stage, the combustion of the auxiliary combustion burner 46 is stopped.

An air introduction port 43 for introducing combustion air into the external heating chamber 48 is formed on the furnace body 42 surrounding the external heating chamber 48 . In this embodiment, the amount of combustion air introduced into the external heating chamber 48 through the air introduction port 43 is adjusted by means of a control section not shown in the figure, thereby controlling the temperature of the external heating chamber 48 to coincide with a predetermined target temperature.

The mixture in the distiller 44 moves from the left end in the figure to the right direction in the figure as the distiller 44 rotates (providing a slight slope to the distiller 44). The water in the mixture is efficiently evaporated on the upstream side of still 44 . After the mixture moves to the downstream side of the still 44 , the mixture is subjected to dry distillation treatment at a temperature of 700° C. to 900° C. which is close to the atmospheric temperature of the external heating chamber 48 . Finally, the carbonized material (carbonized product) as a dry distillation residue is discharged from the outlet 52 of the distiller 44 at the right end in the figure, that is, the carbonized material (carbonized product) is discharged from the carbonization furnace 40 as a dry distillation residue.

Inside the furnace body 42 is provided an exhaust gas treatment chamber 50 separated from the external heating chamber 48 . Exhaust gas from the external heating chamber 48 is introduced into the exhaust gas treatment chamber 50 . A burner 47 is provided in the exhaust gas treatment chamber 50 , and unburned gas in the exhaust gas introduced into the exhaust gas treatment chamber 50 is secondary-combusted by means of the burner 47 .

The exhaust gas in the exhaust gas treatment chamber 50 is then exhausted from the gas exhaust port 51 . An exhaust gas channel extends from the exhaust gas treatment chamber 50 via a gas outlet 51 . As shown in FIG. 8 , the exhaust gas from the carbonization furnace 40 is released from the chimney to the outside through the carbonization furnace-exhaust gas-fan, passing through the carbonization furnace-exhaust gas-heat exchanger and the exhaust gas path, for example.

At the front end of the carbonization furnace 40 of this embodiment, as shown in FIG. 4 , a charging device 54 for the carbonization furnace 40 is provided. The charging device 54 of the carbonization furnace 40 is equipped with a screw conveyor 60 , and the storage tank 56 is attached to a charging port 60 a of the screw conveyor 60 .

Inside the storage tank 56 , a rotary shaft 57 is rotatably supported, and a plurality of scraper blades 58 integrally rotating with the rotary shaft 57 are provided at different positions in the axial direction of the rotary shaft 57 . These rotating shafts 57 and scraping blades 58 are connected to a drive mechanism of the auger 60 so as to rotate in conjunction with the auger 60 .

The screw conveyor 60 is equipped with a screw shaft 61 , a screw blade 62 helically protruding from the screw shaft 61 , and a driving motor 63 that rotates the screw shaft 61 . The discharge-side end of the screw conveyor 60 is inserted into the interior of the still 44 of the carbonization furnace 40 .

According to the present embodiment, the mixture charged in the storage tank 56 is caused to fall toward the screw conveyor 60 located below by the rotational movement of the scraper blade 58 inside the storage tank 56 . The falling mixture is accommodated in grooves between the screw blades 62 of the screw conveyor 60 , extruded forward as the screw shaft 61 rotates, and charged into the inside of the distiller 44 .

According to the carbonization treatment method of the present embodiment as described above, the apparent water content of the mixture is adjusted by mixing chaff and dewatered sludge. Therefore, a dryer and a hot air generating furnace, which are generally used to adjust the water content of sludge, may be unnecessary. Therefore, simplification of the constituent devices of the carbonization treatment facility 1 can be achieved. In addition, since hot air for drying the mixture prior to carbonization treatment is not required, treatment cost (fuel consumption) can be reduced.

Furthermore, in the present embodiment, the twin paddle mixers 14 are used in the mixing step of mixing chaff and dewatered sludge to obtain a mixture. Therefore, when the apparent water content is the same, the resulting mixture is discharged in a finely loose state (discrete state) compared to the case of using the below-mentioned single screw pump. Suitable for obtaining finer grained carbonized materials.

In the present embodiment, in addition to or instead of the chaff itself, pulverized chaff (chaff powder) may be used. The use of comminuted chaff allows for a more homogeneous mixing with the sludge, thus improving the quality of the carbonized material to be produced.

Furthermore, since the mixture of chaff and dewatered sludge having a small bulk density in its own shape has a small density, this mixture is easily scattered to the exhaust gas passage side in the carbonization furnace 40 . This may result in a decrease in the yield of carbonized material. On the other hand, the mixture of finely divided chaff and dewatered sludge may have an increased density. Therefore, such a mixture is difficult to scatter in the carbonization furnace 40, so that the yield of carbonized material can be improved. In order to obtain such an effect, it is desirable to use chaff pulverized in such a manner that the bulk density becomes 2 to 10 times. Pulverization of chaff can be performed by using a grinder, a hammer mill, or the like.

Fig. 5 is a diagram showing another embodiment (second embodiment) of the present invention. This embodiment differs from the first embodiment in that chaff and dewatered sludge are mixed by using a single screw pump (mixer 64 ) in the mixing step. Other configurations are the same as in the first embodiment.

The mixer 64 in the carbonization treatment apparatus 1B shown in FIG. 5 is equipped with a single screw pump 68 and a storage tank 66 attached to an inlet 68 a of the single screw pump 68 .

As shown in FIG. 6 , the single screw pump 68 is equipped with a stator 70 and a rotor 72 inside a cylindrical housing 69 . A through hole extending in the axial direction while being twisted at a fixed twist angle and having an elliptical cross section is formed on the stator 70 . The rotor 72 has a rod shape with a circular cross section and is disposed along a through hole of the stator 70 . In addition, an axially continuous spiral cavity 74 is formed between the stator 70 and the rotor 72 .

The rotor 72 is connected to a drive motor 76 via a joint member not shown in the figure. The rotor 72 is configured such that when the drive motor 76 is activated, the rotor 72 rotates in the through hole having an elliptical cross section, and as a result, the content contained in the cavity 74 gradually moves in the axial direction.

The discharge port 68b of the single screw pump 68 is connected to the carbonization furnace 40 (specifically, the storage tank 56 of the charging device 54 of the carbonization furnace 40 ) via a pipe 77 .

In the present embodiment, the chaff and dewatered sludge charged into the chamber 74 through the charging port 68a are kneaded in a compacted state by the rotating rotor 72 . Therefore, it is possible to continuously form a mixture having fewer voids and a higher density than in the case of the twin paddle mixers used in the first embodiment described above.

According to the carbonization treatment method of the present embodiment, the mixture having a high density is supplied to the carbonization furnace 40 . Therefore, it is possible to suppress the mixture from scattering to the exhaust gas passage side in the carbonization furnace 40 to reduce the yield of carbonized material. This effect is particularly effective in the case of using chaff pulverized in such a manner that the bulk density becomes 2 to 10 times. Incidentally, the bulk density of rice husks in their own shape (before pulverization) is usually about 0.1 g/cm ³ . In the present embodiment, it is desirable to use chaff having a bulk density of 0.2 g/cm ³ to 1.0 g/cm ³ after crushing.

In addition, in the present embodiment, the discharge port 68b of the single screw pump 68 and the carbonization furnace 40 are directly connected through the pipe 77 . Therefore, it is possible to supply the mixture to the carbonization furnace 40 without using a separate conveying device such as the conveyer 38 in the first embodiment. Therefore, the configuration of the carbonization treatment equipment can be more simplified.

Fig. 7 is a diagram showing still another embodiment (third embodiment) of the present invention. The present embodiment (carbonization treatment facility 1C) differs from the second embodiment in that a second mixer 80 as a double paddle mixer is provided between the mixer 64 using the single screw pump 68 and the carbonization furnace 40 . The configuration of the second mixer 80 is the same as that of the twin-blade mixer 14 in the first embodiment.

In the present embodiment, the discharge port 68b of the single screw pump 68 and the storage tank 20 of the second mixer 80 are connected by a pipe 82 . The mixture mixed by the single screw pump 68 is sent to the second mixer 80 through the line 82 . Furthermore, this embodiment is configured such that the conveyor 38 is provided between the second mixer 80 and the carbonization furnace 40 , and the mixture discharged from the second mixer 80 is conveyed to the carbonization furnace 40 through the conveyor 38 .

According to the present embodiment, a more uniformly mixed mixture can be obtained by using two types of mixers 64 and 80 . In addition, the carbonization furnace 40 may be supplied with a mixture in a state of finer particles obtained by the action of the second mixer 80 as a double paddle mixer provided at a later stage.

Other modifications and application examples:

In the present invention, it is also possible to obtain a mixture having a predetermined water content by mixing biomass other than chaff with dewatered sludge. Herein, biomass is an organic resource derived from living organisms, and specific examples thereof include: (1) Inedible parts of agricultural crops such as rice straw, banana stems, coffee grounds, palm shells/bunches, coconut shells, corn cobs, sugar cane (2) resource crops such as sugar cane, corn and cassava, (3) woody material obtained from wood such as wood chips and wood pellets, thinned wood and waste wood, etc.

Biomass has various characteristics. Therefore, in order to achieve uniform mixing with dewatered sludge, and to obtain carbonized materials with a desired particle size, properly cut or pulverized biomass can be used. The length of the biomass to be used is preferably 30 mm or less, more preferably 20 mm or less.

In addition, the water content of the biomass to be used is preferably 30% or less, more preferably 20% or less.

In the case of using biomass other than chaff, this can also be done by using a double paddle mixer or twin rod mixer and/or a mixer equipped with a single screw pump as exemplified in the above embodiments Mixing with dewatered sludge.

As described above, the embodiments of the present invention have been described in detail, but the embodiments of the present invention are only examples. The present invention can be carried out in various modified forms without departing from its gist.

This application is based on Japanese Patent Application No. 2018-045799 filed on March 13, 2018, the contents of which are incorporated herein by reference.

Claims (6)

1. a kind of carbonization treatment method, comprising the following steps:

Biomass and dewatered sludge are mixed, to obtain the mixture that apparent water content is 30% to 70%；And

The mixture is set to carry out destructive distillation processing, at 700 DEG C to 900 DEG C under anaerobic or hypoxia condition to obtain carbonization material Material.

2. carbonization treatment method according to claim 1,

Wherein the biomass is husk.

3. carbonization treatment method according to claim 2,

Wherein the husk is crushed in such a way that bulk density becomes 2 to 10 times.

4. carbonization treatment method according to any one of claim 1 to 3,

Wherein in the mixing step, by using double arm mixers or double rod type mixer make the biomass with it is described Dewatered sludge mixing.

5. carbonization treatment method according to any one of claim 1 to 3,

Wherein in the mixing step, mix the biomass with the dewatered sludge by using single-screw (single screw) pump.

6. a kind of carbonization treatment equipment, comprising:

Mixer is constructed such that biomass and dewatered sludge are mixed to obtain mixture, and

Carbide furnace, being configured to handle by destructive distillation makes the mixture be carbonized,

Wherein the carbonization treatment equipment is not equipped with drier to dry the dewatered sludge.