CN209778746U

CN209778746U - Pyrolysis feeding hearth

Info

Publication number: CN209778746U
Application number: CN201920371702.9U
Authority: CN
Inventors: 丁元杰; 张军
Original assignee: Taizhou Rui Feng Environmental Technology Co Ltd
Current assignee: Taizhou Rui Feng Environmental Technology Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2019-12-13
Anticipated expiration: 2029-03-22

Abstract

The utility model discloses a pyrolysis feeding furnace, including furnace, boiler tube, the sealed end of feeding, feeding spiral, feed inlet, the furnace cladding is in the outside of boiler tube, the left end of boiler tube is the sealed end of feeding, the sealed end of feeding links to each other with the feeding spiral, feeding spiral upper portion is the feed inlet, furnace is equipped with a plurality of combustor, still including discharging fume pipe, flue gas processing apparatus, combustion air pipe, the pipe setting of discharging fume is close to the position of the sealed end of feeding on furnace upper portion, with flue gas processing apparatus pipe connection, combustion air pipe one end and flue gas processing apparatus pipe connection, the tail end mutual pipe connection of the other end and every combustor, the utility model discloses the beneficial effect who brings has: 1. after the flue gas leaves furnace, heat the used air of combustor through heat exchanger, improve furnace thermal efficiency, reduce the flue gas discharge temperature, 2, can carry out temperature monitoring to burner combustion position to can guarantee that the measured data is accurate.

Description

Pyrolysis feeding hearth

Technical Field

The utility model relates to a pyrolysis carbonization device, concretely relates to pyrolysis feeding furnace.

Background

China has a large amount of crop straws. To the straw processing, when adopting the pyrolysis carbonization technique, the easy loss of a large amount of flue gas that the furnace burning produced to the air, the flue gas is not only the high temperature easily causes the injury to people around, need leading-in air during current furnace burning, leading-in air must heat in advance, not only the time of having wasted but also the cost is increased, and simultaneously, generally be equipped with temperature sensor in the furnace, whether normal for detect the temperature in the furnace, but temperature sensor's life specifically estimates unable, in case the sensor breaks down, will unable combustion situation in the detection furnace, probably lead to the gas to pile up too much because of abnormal combustion in the furnace, lead to dangerous situation such as explosion.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a pyrolysis feeding furnace, including furnace, boiler tube, the sealed end of feeding, feeding spiral, feed inlet, the furnace cladding is in the outside of boiler tube, the left end of boiler tube is the sealed end of feeding, the sealed end of feeding links to each other with the feeding spiral, feeding spiral upper portion is the feed inlet, furnace is equipped with a plurality of combustor, still includes pipe, flue gas processing apparatus, combustion air duct of discharging fume, the pipe setting of discharging fume is close to the position of the sealed end of feeding on furnace upper portion, with flue gas processing apparatus pipe connection, combustion air duct one end and flue gas processing apparatus pipe connection, the tail end interconnect of the other end and every combustor.

Preferably, three temperature sensors are arranged in the hearth.

Preferably, the flue gas treatment device is provided with a flue gas discharge port.

Preferably, the burners are eight pairs, and each pair is oppositely arranged on two sides of the hearth.

Preferably, the distance between each pair of burners in the hearth is gradually increased from left to right.

Preferably, a pressure detection meter is arranged on the combustion air pipe.

The utility model discloses the beneficial effect who brings has: 1. after the flue gas leaves furnace, heat the used air of combustor through heat exchanger, improve furnace thermal efficiency, reduce the flue gas discharge temperature, 2, can carry out temperature monitoring to burner combustion position to can guarantee that the measured data is accurate.

Drawings

The present invention will be further explained with reference to the drawings and examples.

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

In the figure, 1, a hearth, 2, a furnace tube, 3, a feeding sealing end, 4, a feeding screw, 5, a feeding port, 6, a burner, 7, a smoke exhaust pipe, 8, a smoke treatment device, 9, a combustion air pipe, 10, a temperature sensor, 11, a smoke exhaust port and 12 are pressure detection meters.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in figure 1, a pyrolysis feeding hearth comprises a hearth 1, a furnace tube 2, a feeding sealing end 3, a feeding screw 4 and a feeding port 5, wherein the hearth 1 is coated outside the furnace tube 2, the left end of the furnace tube 2 is the feeding sealing end 3, the feeding sealing end 3 is connected with the feeding screw 4, the upper part of the feeding screw 4 is the feeding port 5, the hearth 1 is provided with a plurality of burners 6, the pyrolysis feeding hearth further comprises a smoke exhaust pipe 7, a smoke treatment device 8 and a combustion air pipe 9, the smoke exhaust pipe 7 is arranged at the position, close to the feeding sealing end 3, on the upper part of the hearth 1 and is in pipeline connection with the smoke treatment device 8, one end of the combustion air pipe 9 is in pipeline connection with the smoke treatment device 8, the other end is in pipeline connection with the tail end of each burner 6, straw materials enter from the feeding port 5 and are continuously transmitted to the furnace tube 2, the feeding sealing end 3 is used for ensuring the stability of the feeding screw 4 when in butt joint with the furnace tube 2, the feeding sealing end 3 is provided with a nitrogen hole, nitrogen is continuously introduced from the nitrogen hole on the feeding sealing end 3 to keep a micro-positive pressure environment in the furnace tube 2, then the burner 6 in the hearth 1 is ignited to heat the furnace tube 2, the furnace tube 2 and the hearth 1 are completely separated, so that the tail gas of the furnace tube 2 can be prevented from contacting with naked flame to cause explosion, the flue gas generated by combustion in the hearth 1 enters the flue gas treatment device 8 through the smoke exhaust pipe 7, the flue gas treatment device 8 adopts a heat exchange technology, redundant flue gas is discharged into a designated position through the flue gas discharge port 11, and simultaneously combustion-supporting air is heated, the combustion-supporting air is guided into each burner 6 through the combustion-supporting air pipe 9 to be subjected to auxiliary combustion after being heated, the combustion-supporting air can meet the gas flow required by, the temperature sensor 10 is arranged in the hearth 1 and used for detecting whether the combustion temperature in the hearth 1 is normal or not, in order to avoid that a worker cannot know in time after the temperature sensor 10 fails, two temperature sensors 10 can be arranged, when one temperature sensor 10 fails, the data displayed by the two sensors can generate large difference, so that the temperature sensor 10 can be replaced accordingly, but the defect is that which sensor fails to be ensured accurately, two sensors need to be replaced together, preferably, three temperature sensors 10 are arranged in the application, when one sensor fails, the difference between the sensor and the other two temperature sensors 10 is large, so that the worker can determine which temperature sensor 10 fails, can select to replace the sensor immediately, and meanwhile, if the service life on the specifications of the three temperature sensors 10 is close, and the three temperature sensors 10 can be replaced integrally when the data displayed by the three temperature sensors are different, so that frequent replacement is avoided. Eight pairs of burners 6 are arranged on two sides of the furnace 1 oppositely, the distance between each pair of burners 6 in the furnace 1 is gradually increased from left to right, when the straws are pyrolyzed and carbonized, the materials enter the left end of the furnace tube 2 from the feed port 5, the temperature is lower, the materials are discharged from the right end of the furnace tube 2, the temperature is higher, and the temperature of the corresponding furnace 1 is also adapted, so that the burners 6 at the left end of the furnace 1 are dense, the temperature is quickly raised during heating, the burners 6 at the right end are more dispersed, the temperature is fully raised during heating, the temperature curve of the materials is met, the materials are uniformly heated at different positions in the furnace tube 2, the burners 6 are arranged oppositely in the application, so that hot wind energy in the furnace 1 can rotate around the furnace tube 2, the hot wind stroke is increased, the heat energy is fully utilized, the combustion air tube 9 is provided with a pressure detection meter 12, is used for detecting whether the pressure of the combustion air pipe 9 is normal or not, and preventing accidents. The beneficial effects of this embodiment have: 1. after the flue gas leaves furnace, heat the used air of combustor through heat exchanger, improve furnace thermal efficiency, reduce the flue gas discharge temperature, 2, can carry out temperature monitoring to burner combustion position to can guarantee that the measured data is accurate.

Claims

1. A pyrolysis feed hearth, characterized by: comprises a hearth (1), a furnace tube (2), a feeding sealing end (3), a feeding screw (4) and a feeding hole (5), the hearth (1) is coated outside the furnace tube (2), the left end of the furnace tube (2) is a feeding sealing end (3), the feeding sealing end (3) is connected with the feeding screw (4), the upper part of the feeding screw (4) is a feeding hole (5), the hearth (1) is provided with a plurality of burners (6), and also comprises a smoke exhaust pipe (7), a flue gas treatment device (8) and a combustion air pipe (9), the smoke exhaust pipe (7) is arranged at the position close to the feeding sealing end (3) at the upper part of the hearth (1), and the device is connected with a flue gas treatment device (8) through a pipeline, one end of a combustion air pipe (9) is connected with the flue gas treatment device (8) through a pipeline, and the other end of the combustion air pipe is connected with the tail end of each combustor (6) through a pipeline.

2. A pyrolysis feed hearth according to claim 1, wherein: three temperature sensors (10) are arranged in the hearth (1).

3. A pyrolysis feed hearth according to claim 2, wherein: and a flue gas discharge port (11) is arranged on the flue gas treatment device (8).

4. A pyrolysis feed hearth according to claim 3, wherein: eight pairs of burners (6) are arranged on two sides of the hearth (1) in an opposite mode.

5. A pyrolysis feed hearth according to claim 4, wherein: the distance between each pair of burners (6) in the hearth (1) is gradually increased from left to right.

6. A pyrolysis feed hearth according to claim 5, wherein: and a pressure detection meter (12) is arranged on the combustion-supporting air pipe (9).