CN214289989U

CN214289989U - Multistage low-temperature drying carbonization catalytic kiln

Info

Publication number: CN214289989U
Application number: CN202021902794.8U
Authority: CN
Inventors: 丁莹
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-09-28
Anticipated expiration: 2030-09-03

Abstract

The utility model relates to the technical field of soil remediation, in particular to a multistage low-temperature drying carbonization catalysis kiln, which comprises an upper hood and a lower box body; a feeding screw is rotationally arranged in the upper machine cover, and one end of the upper machine cover is provided with a power driving mechanism corresponding to the feeding screw; the feeding screw is of a hollow structure, one end of the feeding screw displacement tail is sleeved with a sealing water jacket, and hot air or inert gas is conveyed through the sealing water jacket and the feeding screw; a carbonization cavity is arranged in the lower box body, a first transmission unit and a second transmission unit correspond to the carbonization cavity, and the first transmission unit and the second transmission unit move in the same direction; one side of the lower part of the lower box body is provided with an inclined blanking bin, and the blanking bin is connected with a spiral feeder through a blanking chute. The utility model has reasonable and novel design and compact structure, and strengthens the stirring and impurity removing effects of the polluted soil by matching the arranged feeding screw and the sealing water jacket; and a multistage conveying unit is adopted, so that the retention time of the polluted soil is prolonged, and the drying and impurity removal effects are improved.

Description

Multistage low-temperature drying carbonization catalytic kiln

Technical Field

The utility model relates to a soil restoration technical field, concretely relates to multistage low temperature drying carbonization catalysis kiln.

Background

With the continuous acceleration of urbanization and industrialization, the overall situation of soil pollution in China is severe. Causes soil pollution, such as industrial sludge, domestic garbage, sewage irrigation, pollutant sedimentation in the atmosphere, and a large amount of heavy metal-containing fertilizers and pesticides. According to preliminary statistics, nearly 1/5 cultivated lands in China are polluted in different degrees, the polluted soil can cause crop yield reduction, even pollutants in agricultural products exceed standards, particularly heavy metals exceed standards, so that the harmful effects on human bodies are caused, and the human health is not facilitated. In addition, site pollution caused by industrial and mining enterprises is also very serious, and particularly, the area of the polluted site is increased continuously due to the relocation of the polluted enterprises of chemical engineering, metallurgy and the like. "all-things soil grows", and the quality of soil determines the quality of all things, so in order to guarantee food safety and health of human beings, high attention must be paid to prevention of soil pollution and remediation of polluted soil.

At present, some soil remediation methods which are already implemented are available at home and abroad, such as a contaminated soil bioremediation technology, a contaminated soil physical remediation technology, a contaminated soil chemical remediation technology and a contaminated soil combined remediation technology. The bioremediation technology comprises phytoremediation, microbial remediation, biological combined remediation and the like, but the bioremediation technology is low in pertinence and low in efficiency, and pollutants such as heavy metal ions cannot be removed. Physical remediation techniques are techniques for removing or separating contaminants from soil by various physical processes, which are costly and cumbersome to handle. Compared with physical remediation, the chemical remediation technology of the polluted soil is developed earlier, and mainly comprises a leaching technology, a solvent leaching technology, an oxidation-reduction technology, electrodynamics remediation and the like. The chemical leaching technology is one of the common methods for repairing the polluted soil in the prior art, but based on the huge amount of the polluted soil in the prior art, the problems of low productivity, low treatment efficiency, large subsequent treatment capacity and the like of the device for repairing the polluted soil by chemical leaching cannot be effectively solved. In the existing soil remediation system, after the polluted soil enters the soil remediation system, the main process flow is polluted soil pretreatment → soil leaching → mud filter pressing → high temperature drying → metal recovery secondary raw materials, after the prefabricated slurry of the polluted soil enters the system, soluble compounds and ions are removed through the leaching system, and then the concentrated polluted mud needs to be subjected to subsequent filter pressing and oxidation impurity removal. In the prior art, the subsequent treatment process of the polluted slurry is complex, the consumed time is long, and the energy consumption is high. Therefore, the efficient multistage low-temperature drying carbonization catalysis kiln is provided, and has important practical significance for efficiently drying and removing impurities from the polluted slurry.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the embodiment of the utility model provides a multistage low temperature drying carbonization catalysis kiln, the utility model discloses an aim at realizes through following technical scheme:

a multi-stage low-temperature drying carbonization catalysis kiln comprises an upper hood and a lower box body which is matched with the upper hood;

a feeding screw is rotatably arranged in the upper hood along the length direction, and a power driving mechanism is arranged at one end of the upper hood corresponding to the feeding screw; a semi-annular charging barrel is arranged on the lower side of the upper machine cover in parallel with the feeding screw, and a discharging port is arranged at the tail end of the semi-annular charging barrel;

the feeding screw is of a hollow structure, one end of the tail of the feeding screw displacement machine is rotatably sleeved with a sealing water jacket, and hot air or inert gas is conveyed into a cavity defined by the upper machine cover and the semi-annular charging barrel through the sealing water jacket and the feeding screw;

a carbonization cavity is arranged in the lower box body, a first transmission unit is arranged at the upper part of the carbonization cavity corresponding to the discharge port, a second transmission unit is correspondingly arranged below the first transmission unit, the first transmission unit and the second transmission unit move in the same direction, and one end of a machine head of the first transmission unit is shorter than one end of a machine head of the second transmission unit;

one side of the lower part of the lower box body corresponds to one side of the tail of the second transmission unit and is provided with an inclined blanking bin, and the blanking bin is connected with a spiral feeder through a blanking chute.

Furthermore, the power driving mechanism comprises a transmission belt pulley connected with one end of the feeding screw head and a first driving motor in driving connection with the transmission belt pulley through a transmission belt.

Further, the first transmission unit and the second transmission unit have the same structure; and a third driving motor and a second driving motor are correspondingly arranged on the front side plate body of the lower box body through an L-shaped support and the first transmission unit and the second transmission unit.

Further, the second transmission unit comprises a plurality of shaft rollers which are transversely arranged in parallel in the lower box body, and a transmission steel belt which is tightened on the shaft rollers.

Furthermore, at least one path of hot air pipe is arranged on the upper hood or the lower box body; the hot air pipe comprises a main air pipe and a plurality of branch air pipes which are vertically communicated with the main air pipe and are communicated with the inner cavity of the kiln.

Furthermore, a cold air pipe is arranged on the opposite side plate of the blanking bin; and a vibrator is also arranged on the lower storage bin.

Further, the low-temperature carbonization catalysis kiln further comprises a cold energy collector, wherein the cold energy collector comprises an air inlet pipeline communicated with the inner cavity of the upper hood or the lower box body and an air supply pipeline communicated with the lower bin.

Further, the feeding screw comprises a transmission shaft and a screw blade fixedly wound on the circumference of the transmission shaft; a first cavity is arranged in the transmission shaft, and a plurality of open structures communicated with the first cavity are arranged on the circumference of the transmission shaft along the spiral line of the spiral blade; the spiral blade is internally provided with a second cavity, the inner edge of the spiral blade is provided with an opening, the opening of the inner edge of the spiral blade corresponds to the open structure of the transmission shaft, a plurality of first through holes communicated with the second cavity are formed in the plate body of the spiral blade, and the second cavity is communicated with the first cavity through the open structure; the transmission shaft is provided with a plurality of third via holes on one end circumference, and the sealing water jacket is arranged corresponding to the third via holes and is communicated with the first cavity in the transmission shaft through the third via holes.

Furthermore, the sealing water jacket comprises a first bearing cover, a second bearing cover and a bearing sleeve, wherein the first bearing cover and the second bearing cover are arranged in an opposite mode, the bearing sleeve is arranged between the first bearing cover and the second bearing cover, two bearing bearings are arranged at two ends of an inner ring of the bearing sleeve, an annular water jacket is arranged between the two bearing bearings, and an access pipe communicated with the annular water jacket is arranged on the bearing sleeve; the first bearing cover and the second bearing cover are fixedly connected with the bearing sleeve through fixing screws.

Furthermore, the inner sides of the first bearing cover and the second bearing cover protrude to form annular bosses, the outer edges of the annular bosses are clamped at the inner edge of the bearing sleeve, and the end faces of the annular bosses are tightly propped against the side face of an outer bearing bush of the bearing; a second sealing ring is arranged between the first bearing cover or the second bearing cover and the bearing; a first sealing ring is arranged between the pressure bearing and the annular water jacket.

Compared with the prior art the utility model discloses beneficial effect does: 1. the utility model has reasonable and novel design and compact structure, adopts the feeding screw and the sealing water jacket which are arranged in a matching way, adds gas with catalytic function or heating hot air or inert gas to the system, intensively stirs the polluted soil, and improves the impurity removal effect of the polluted soil; for the polluted soil with high organic matter content, hot air and gas with catalytic action can be input; aiming at part of metal particles, inert gas is added to avoid oxidation of the metal particles, so that the consumption of a subsequent neutralizer is increased; 2. the multistage conveying unit is adopted, so that the detention time of the polluted soil in the carbonization catalysis kiln can be prolonged, and the drying and impurity removal effects are improved; 3. the device cooperation is provided with cold energy collector, improves its heat utilization rate, can realize handling tail gas and cooling treatment to high temperature tailing simultaneously.

Drawings

FIG. 1 is a front view of the low-temperature carbonization catalytic kiln of the present invention;

FIG. 2 is a front view of the internal structure of the lower box of the low-temperature carbonization catalytic furnace in FIG. 1;

FIG. 3 is a left side view of the low temperature carbonization catalysis kiln of the embodiment of the present invention;

FIG. 4 is a right side view of a low temperature carbonization catalytic kiln according to an embodiment of the present invention;

FIG. 5 is a right side view of the internal structure of the lower box of the low temperature carbonization catalysis kiln shown in FIG. 4;

FIG. 6 is a schematic view of the connection structure of the feed screw and the sealing water jacket of the present invention;

fig. 7 is a schematic view of the connection structure of the transmission shaft and the sealing water jacket of the present invention;

fig. 8 is a schematic axial section view of the feed screw and the sealing water jacket of the present invention;

fig. 9 is an enlarged view of the axial section of the feed screw and the sealing water jacket of the present invention.

In the figure:

100. a low-temperature carbonization catalysis kiln; 110. an upper hood; 111. a semi-annular charging barrel; 112. a discharge port; 120. a cold energy collector; 130. a hot air pipe; 131. a main air duct; 132. a branch air pipe; 140. a feeding bin; 150. a power drive mechanism; 151. a drive pulley; 152. a transfer belt; 153. a first drive motor; 160. a support frame; 170. a lower box body; 180. a second drive motor; 190. a roll shaft; 1100. a third drive motor; 1110. a vibrator; 1120. a screw feeder; 1130. blanking chute; 1140. discharging a bin; 1150. a cold air pipe; 1160. sealing the water jacket; 1161. a first bearing gland; 1162. a bearing housing; 1163. an access pipe; 1164. a first seal ring; 1165. a set screw; 1166. a second bearing cap; 1167. an annular water jacket; 1168. an annular boss; 1169. a pressure bearing; 11610. a second seal ring; 1170. a first transmission unit; 1180. a second transmission unit; 1181. a beam barrel; 1182. conveying a steel belt; 1190. a feed screw; 1191. a drive shaft; 1192. a helical blade; 1193. a first via hole; 1194. a spiral wire groove; 1195. a second via hole; 1196. a first cavity; 1197. a second cavity; 1198. and a third via.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Example 1:

referring to fig. 1 to 9, the utility model discloses a multistage low-temperature drying carbonization catalysis kiln, wherein the low-temperature carbonization catalysis kiln 100 comprises an upper hood 110 and a lower box 170 which is matched with the upper hood 110;

a feeding screw 1190 is rotatably arranged in the upper hood 110 along the length direction, and a power driving mechanism 150 is arranged at one end of the upper hood 110 corresponding to the feeding screw 1190; a semi-annular charging barrel 111 is arranged on the lower side of the upper hood 110 in parallel with the feeding screw 1190, and a discharging port 112 is arranged at the tail end of the semi-annular charging barrel 111; the feeding screw 1190 is driven to rotate along the axial direction by the power driving mechanism 150; the lower side of the upper hood 110 and the semi-annular charging barrel 111 form a spiral feeding cavity; the spiral feeding cavity mainly functions to delay the time for the soil to be polluted to enter the drying cavity of the lower box 170, and hot air or inert gas with catalytic gas gradually released by the feeding spiral 1190 fully acts in the cavity enclosed by the semi-annular material cylinder 111 and the upper cover 110.

Specifically, the feeding screw 1190 is of a hollow structure, a sealing water jacket 1160 is rotatably sleeved at one end of the displacement tail of the feeding screw 1190, and hot air or inert gas is conveyed into a cavity defined by the upper hood 110 and the semi-annular charging barrel 111 through the sealing water jacket 1160 and the feeding screw 1190;

referring to fig. 2, a carbonization cavity is arranged in the lower box 170, a first transmission unit 1170 is arranged at the upper part of the carbonization cavity corresponding to the discharge hole 112, a second transmission unit 1180 is arranged below the first transmission unit 1170, the first transmission unit 1170 and the second transmission unit 1180 move in the opposite direction, and one end of a handpiece of the first transmission unit 1170 is shorter than one end of a handpiece of the second transmission unit 1180; the first transmission unit 1170 conveys the polluted soil to be treated to the machine head from the machine tail, and in the process, the latent heat of the polluted soil gradually releases the water and organic matter components in the polluted soil; the polluted soil falls from the front end of the first transmission unit 1170 to the front end of the second transmission unit 1180, and the second transmission unit 1180 further promotes the carbonization process of the polluted soil in the process of transporting the polluted soil to the tail; it should be noted that, according to the demand, a third transmission unit can be further provided, and evaporation carbonization treatment of the contaminated soil can be well realized through the multi-stage transmission unit, so that the reduction treatment process of the contaminated soil is further realized.

Referring to fig. 1 to 4, an inclined discharging bin 1140 is disposed at one side of the lower portion of the lower box 170 and at one side of the tail of the second transporting unit 1180, and the discharging bin 1140 is connected to a screw feeder 1120 through a discharging chute 1130; the contaminated soil falls from the second transport unit 1180 and enters the lower bin 1140 to be cooled, and the cooled contaminated soil is conveyed to a packing machine or a customized bin by the screw feeder 1120 to be stored.

Referring to fig. 1 and 3, the power driving mechanism 150 includes a driving pulley 151 connected to one end of the head of the feeding screw 1190, and a first driving motor 153 drivingly connected to the driving pulley 151 through a transmission belt 152; the feeding screw 1190 can be driven to rotate by the power driving mechanism 150, so that the contaminated soil can be conveyed.

Referring to fig. 2 and 5, the first transmission unit 1170 and the second transmission unit 1180 have the same structure; a third driving motor 1100 and a second driving motor 180 are correspondingly arranged on the front side plate body of the lower box body 170 with the first transmission unit 1170 and the second transmission unit 1180 through an L-shaped bracket; the third driving motor 1100 can drive the first transmission unit 1170 to rotate so as to realize the transmission of the materials; the second driving motor 180 may drive the second transmission unit 1180 to rotate to realize the transmission of the material.

Specifically, the second transmission unit 1180 includes a plurality of axle rollers 1181 transversely arranged in parallel in the lower box 170, and a transmission steel belt 1182 tightened on the axle rollers 1181, wherein two ends of the axle rollers 1181 are rotatably arranged on the lower box 170 through the axle rollers 190; the structure is stable and is especially suitable for drying devices with higher temperature.

Referring to fig. 1 and 3, at least one hot air duct 130 is further disposed on the upper hood 110 or the lower box 170; the hot air duct 130 comprises a main air duct 131 and a plurality of branch air ducts 132 vertically communicated with the main air duct 131 and communicated with the inner cavity of the kiln. Referring to fig. 3, the upper hood 110 is correspondingly provided with two hot air pipes 130, and the hot air pipes 130 are matched with the feeding screw 1190 to efficiently heat and carbonize the contaminated soil.

Referring to fig. 1 and 2, a cold air pipe 1150 is disposed on the opposite side plate of the discharging bin 1140; a vibrator 1110 is also arranged on the lower silo 1140; the low-temperature carbonization catalysis kiln 100 further comprises a cold energy collector 120, wherein the cold energy collector 120 comprises an air inlet pipeline communicated with the inner cavity of the upper hood 110 or the lower box 170 and an air supply pipeline communicated with the lower silo 1140, and the air supply pipeline is butted with the cold air pipe 1150; in this embodiment, the cold energy collector 120 may be obtained by integrating the prior art, and includes a dust collecting device such as a bag dust collector, and a heat recovery device such as a heat recovery coil, and the like, and may remove dust from the high-temperature tail gas in the carbonization catalytic kiln and recover heat energy thereof for recycling, and prepare cold air to be conveyed to the lower silo 1140 to cool the material.

Referring to fig. 6 to 9, the feeding screw 1190 includes a driving shaft 1191 and a screw blade 1192 fixed around the circumference of the driving shaft 1191; a first cavity 1196 is arranged in the transmission shaft 1191, and a plurality of open structures communicated with the first cavity 1196 are arranged on the circumference of the transmission shaft 1191 along the spiral line of the spiral blades 1192; the helical blade 1192 is internally provided with a second cavity 1197, the inner edge of the helical blade 1192 is provided with an opening, the opening of the inner edge of the helical blade 1192 corresponds to the open structure of the transmission shaft 1191, a plurality of first through holes 1193 communicated with the second cavity 1197 are arranged on the plate body of the helical blade 1192, and the second cavity 1197 is communicated with the first cavity 1196 through the open structure; a plurality of third through holes 1198 are formed in the circumference of one end of the transmission shaft 1191, and the sealing water jacket 1160 is arranged corresponding to the third through holes 1198 and is communicated with the first cavity 1196 in the transmission shaft 1191 through the third through holes 1198. It should be noted that the sealing water jacket 1160 in the present embodiment may be a conventionally arranged sealing water jacket 1160, which also has a function of injecting a liquid or gas medium into the relatively rotating member; in this embodiment, hot air or a gaseous medium having a catalytic action is supplied to the feed screw 1190 through the water seal jacket 1160.

Preferably, the sealing water jacket 1160 includes a first bearing cover 1161 and a second bearing cover 1166 which are oppositely arranged, and a bearing sleeve 1162 arranged between the first bearing cover 1161 and the second bearing cover 1166, two bearing bearings 1169 are arranged at two ends of an inner ring of the bearing sleeve 1162, an annular water jacket 1167 is arranged between the two bearing bearings 1169, and an access pipe 1163 communicated with the annular water jacket 1167 is arranged on the bearing sleeve 1162; the first bearing pressure cover 1161 and the second bearing pressure cover 1166 are fixedly connected with the bearing sleeve 1162 through a fixing screw 1165; gas or liquid medium with a catalysis or purification function can be injected into the annular water jacket 1167 through the access pipe 1163, and the gas or liquid medium with the catalysis or purification function in the annular water jacket 1167 enters the first cavity 1196 in the transmission shaft 1191 through the third through hole 1198; the sealing water jacket 1160 with the structure can meet the requirement that the feeding screw 1190 and the sealing water jacket 1160 rotate relatively.

Preferably, the inner sides of the first bearing cover 1161 and the second bearing cover 1166 protrude to form an annular boss 1168, the outer edge of the annular boss 1168 is clamped at the inner edge of the bearing sleeve 1162, and the end face of the annular boss 1168 abuts against the side face of the outer bearing bush of the bearing sleeve 1169, so that the sealing water jacket 1160 with the structure is more compact and firm in structure; a second sealing ring 11610 is arranged between the first bearing cover 1161 or the second bearing cover 1166 and the bearing 1169; a first sealing ring 1164 is arranged between the pressure bearing 1169 and the annular water jacket 1167, and the sealing performance of the sealing water jacket 1160 is further improved by the aid of the first sealing ring 1164 and the second sealing ring 11610.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, 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, article, or apparatus.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A multi-stage low-temperature drying carbonization catalysis kiln is characterized in that a low-temperature carbonization catalysis kiln (100) comprises an upper hood (110) and a lower box body (170) matched with the upper hood (110);

a feeding screw (1190) is rotatably arranged in the upper hood (110) along the length direction, and a power driving mechanism (150) is arranged at one end of the upper hood (110) and corresponds to the feeding screw (1190); a semi-annular charging barrel (111) is arranged on the lower side of the upper hood (110) and in parallel with the feeding screw (1190), and a discharging hole (112) is formed in the tail end of the semi-annular charging barrel (111);

the feeding screw (1190) is of a hollow structure, a sealing water jacket (1160) is rotatably sleeved at one end, located at the tail, of the feeding screw (1190), and hot air or inert gas is conveyed to a cavity defined by the upper hood (110) and the semi-annular charging barrel (111) through the sealing water jacket (1160) and the feeding screw (1190);

a carbonization cavity is arranged in the lower box body (170), a first transmission unit (1170) is arranged at the upper part of the carbonization cavity corresponding to the discharge hole (112), a second transmission unit (1180) is correspondingly arranged below the first transmission unit (1170), the first transmission unit (1170) and the second transmission unit (1180) move in the same direction, and one end of the machine head of the first transmission unit (1170) is shorter than one end of the machine head of the second transmission unit (1180);

an inclined blanking bin (1140) is correspondingly arranged at the lower part of the lower box body (170) and at one side of the tail of the second transmission unit (1180), and the blanking bin (1140) is connected with a screw feeder (1120) through a blanking chute (1130).

2. The multi-stage low-temperature drying carbonization catalysis kiln as claimed in claim 1, wherein the power driving mechanism (150) comprises a transmission pulley (151) connected with one end of the feeding screw (1190), and a first driving motor (153) in driving connection with the transmission pulley (151) through a transmission belt (152).

3. The catalytic kiln for multistage low-temperature drying and carbonization according to claim 1, characterized in that the first transfer unit (1170) and the second transfer unit (1180) have the same structure; and a third driving motor (1100) and a second driving motor (180) are correspondingly arranged on the front side plate body of the lower box body (170) through an L-shaped bracket and the first transmission unit (1170) and the second transmission unit (1180).

4. The multi-stage low-temperature drying carbonization catalytic kiln as recited in claim 3, wherein the second conveying unit (1180) comprises a plurality of rollers (1181) transversely arranged in parallel in the lower box (170), and a conveying steel belt (1182) stretched on the rollers (1181).

5. The multi-stage low-temperature drying carbonization catalysis kiln as claimed in claim 1, wherein at least one hot air pipe (130) is further disposed on the upper hood (110) or the lower box (170); the hot air pipe (130) comprises a main air pipe (131) and a plurality of branch air pipes (132) which are vertically communicated with the main air pipe (131) and are communicated with the inner cavity of the kiln.

6. The multi-stage low-temperature drying carbonization catalysis kiln as claimed in claim 1, wherein the lower silo (1140) is provided with a cold air pipe (1150) on the side plate opposite to the side plate; and a vibrator (1110) is also arranged on the lower storage bin (1140).

7. The multi-stage low-temperature drying carbonization catalysis kiln as claimed in claim 6, wherein the low-temperature carbonization catalysis kiln (100) further comprises a cold energy collector (120), and the cold energy collector (120) comprises an air inlet pipe communicated with the inner cavity of the upper hood (110) or the lower box body (170), and an air supply pipe communicated with the lower storage bin (1140).

8. The multi-stage low-temperature drying carbonization catalytic furnace as claimed in any of claims 1 to 7, wherein the feed screw (1190) comprises a drive shaft (1191) and a screw blade (1192) fixed around the circumference of the drive shaft (1191); a first cavity (1196) is arranged in the transmission shaft (1191), and a plurality of open structures communicated with the first cavity (1196) are arranged on the circumference of the transmission shaft (1191) along the spiral line of the spiral blade (1192); the spiral blade (1192) is internally provided with a second cavity (1197), the inner edge of the spiral blade (1192) is provided with an opening, the opening of the inner edge of the spiral blade (1192) corresponds to the open structure of the transmission shaft (1191), a plurality of first through holes (1193) communicated with the second cavity (1197) are formed in the plate body of the spiral blade (1192), and the second cavity (1197) is communicated with the first cavity (1196) through the open structure; a plurality of third through holes (1198) are formed in the circumference of one end of the transmission shaft (1191), the sealing water jacket (1160) is arranged corresponding to the third through holes (1198) and is communicated with a first cavity (1196) in the transmission shaft (1191) through the third through holes (1198).

9. The multistage low-temperature drying carbonization catalysis kiln as claimed in claim 8, wherein the sealing water jacket (1160) comprises a first bearing cover (1161), a second bearing cover (1166) and a bearing sleeve (1162) arranged between the first bearing cover (1161) and the second bearing cover (1166) which are oppositely arranged, two bearing bearings (1169) are arranged at two ends of an inner ring of the bearing sleeve (1162), an annular water jacket (1167) is arranged between the two bearing bearings (1169), and an access pipe (1163) communicated with the annular water jacket (1167) is arranged on the bearing sleeve (1162); the first bearing pressure cover (1161) and the second bearing pressure cover (1166) are fixedly connected with the bearing sleeve (1162) through fixing screws (1165).

10. The multi-stage low-temperature drying carbonization catalysis kiln as claimed in claim 9, wherein the first bearing cover (1161) and the second bearing cover (1166) are protruded to form an annular boss (1168), the outer edge of the annular boss (1168) is clamped to the inner edge of the bearing sleeve (1162), and the end face of the annular boss (1168) abuts against the lateral surface of the outer bearing pad of the bearing sleeve (1169); a second sealing ring (11610) is arranged between the first bearing cover (1161) or the second bearing cover (1166) and the bearing (1169); a first sealing ring (1164) is arranged between the pressure bearing (1169) and the annular water jacket (1167).