CN217535482U - Multi-tube type active carbon processing equipment - Google Patents

Abstract

The utility model discloses a multi-tube type active carbon processing device, which comprises an activation furnace, wherein the activation furnace comprises a furnace body, a central combustion chamber and a plurality of activation channels which are circumferentially distributed on the periphery of the central combustion chamber are arranged in the furnace body, the central combustion chamber and the activation channels both axially extend along the furnace body, and each activation channel is communicated with the central combustion chamber at the discharge end of the activation channel; the feed end of the furnace body is provided with a negative pressure suction device communicated with the central combustion chamber, the furnace body is provided with an air inlet communicated with the central combustion chamber, and the negative pressure suction device is used for sucking air and activated tail gas generated in each activation channel into the central combustion chamber to be combusted and released to supply heat to each activation channel. In the utility model, the central combustion chamber is arranged at the center of the furnace body, each activation channel is distributed at the periphery of the central combustion chamber, and the interior of the activation channel is uniformly heated; under the negative pressure suction, the activated tail gas and the high-temperature flue gas can not escape from the activation furnace, can be directly utilized in the activation furnace, does not need to be led out for purification, and greatly reduces the heat loss.

Description

Multi-tube type active carbon processing equipment

Technical Field

The utility model belongs to the technical field of the active carbon production, concretely relates to multitubular active carbon processing equipment.

Background

According to different heating modes, activated carbon activation equipment can be divided into internal heating type and external heating type. Wherein, traditional interior hot type activation equipment lets in high temperature vapor in order to turn into the carbonization material with raw materials behind the raw materials burning, and the chemical reaction that takes place is mainly: c + HO ₂ +O ₂ →CO ₂ +H ₂ . The disadvantages of this activation method are: (1) Because the oxygen content in the activation chamber is higher, the activation chamber still continuously burns in the early stage of activation, so that the consumption of the carbonized material is large, and the obtained carbon rate is low; (2) When the temperature in the activation chamber is reduced and the combustion is stopped, the carbonized material is reserved, but the activation rate of the obtained carbonized material is lower due to insufficient temperature; (3) High-temperature steam needs to be additionally provided for the activation chamber, so that the energy consumption is high; and the tail gas generated by the activation chamber can not be effectively utilized, thereby causing energy waste.

Compared with the internal heat type activation device, the external heat type activation device is greatly improved. The Chinese patent application with publication number CN113636553A discloses an external heat rotary type high-efficiency energy-saving environment-friendly production device for high-quality activated carbon, which comprises a cylindrical rotary activation furnace, wherein the rotary activation furnace comprises an activation cylinder, an annular hearth and a rotary furnace shell which are sequentially arranged from inside to outside, and the annular hearth consists of a plurality of annular combustion chambers axially arranged along the activation cylinder; according to the material moving direction, the activation cylinder comprises a feeding end, an warming area, an activation area, a cooling area and a discharging end; a furnace head cover and a furnace tail cover are respectively arranged at two ends of the activation cylinder, a feed hopper communicated with the feed end is arranged on the furnace head cover, and a heating area of the activation cylinder is connected with an auxiliary gas source; the furnace tail cover is provided with a steam pipe which extends to the activation area along the axial direction of the activation cylinder, and a discharge hopper which is communicated with the discharge end.

The device also comprises an activated tail gas recovery combustion system, wherein the activated tail gas recovery combustion system comprises a tail gas recovery pipe, a tail gas waste heat drying machine, a first cyclone dust collector, a first cooler, a second cooler, a high-temperature pressure fan, a main gas valve and one inlet of a three-way joint which are sequentially connected, the other inlet of the three-way joint is connected with an auxiliary gas valve, the outlet of the three-way joint is connected with the outer port of a tail gas inlet pipe, and the inner port of the tail gas inlet pipe is communicated with the reversing combustion chamber; the tail gas recovery pipe is communicated with the heating area of the activation cylinder.

The external heat rotary type high-quality activated carbon high-efficiency energy-saving environment-friendly production device has the following defects: (1) Only one activation cylinder with a relatively large inner diameter is arranged in the rotary activation furnace and is arranged in the center of the rotary activation furnace, the annular combustion chambers for heating the activation cylinder are arranged on the periphery of the activation cylinder, and all the annular combustion chambers are distributed along the axial direction of the activation cylinder at intervals; on one hand, the inner diameter of the activation cylinder is larger, the heat supply capacity of the annular combustion chambers at the periphery to the center of the activation cylinder is more limited, and the annular combustion chambers are arranged at intervals, so that the condition of uneven heat supply exists in the circumferential direction of the activation cylinder; the loading capacity of the carbonized material in the activation cylinder is too large, and the situations of uneven heating and insufficient reaction are easy to occur; (2) Activated tail gas generated by the activation reaction needs to be led out of the rotary activation furnace, and can be returned to the annular combustion chamber for combustion after being purified in the activated tail gas recovery combustion system so as to supply heat to the activation cylinder, otherwise, a large amount of carbon particles and dust particles are easily released in a leakage manner; during the extraction process, although the circulating hot water is obtained by heat exchange with the circulating cooling water, the heat loss is still large.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide a multi-tube type activated carbon processing device, wherein the interior of an activation channel is uniformly heated, the activation reaction is fully performed, and the activated tail gas has almost no heat loss.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the multi-tube type activated carbon processing equipment comprises an activation furnace, wherein the activation furnace comprises a furnace body, a central combustion chamber and a plurality of activation channels which are circumferentially distributed on the periphery of the central combustion chamber are arranged in the furnace body, the central combustion chamber and the activation channels both axially extend along the furnace body, and the discharge end of each activation channel is communicated with the central combustion chamber;

the negative pressure suction device is used for sucking air and activated tail gas generated in each activation channel into the central combustion chamber to be combusted and release heat so as to supply heat to each activation channel.

The utility model changes the position relation between the combustion chamber and the activation channels in the prior art, arranges the central combustion chamber in the center of the furnace body, and arranges a plurality of activation channels in the periphery of the central combustion chamber in a planet way; on one hand, the inner diameter of each activation channel is reduced, the loading capacity of the carbonization material is not excessive, the uniform heating can be ensured, and the activation reaction is performed fully and quickly; on the other hand, the inner diameter of the central combustion chamber is enlarged, the heat is sufficient, and heat can be supplied to each activation passage in the whole axial direction and the whole circumferential direction.

The utility model discloses the discharge end that will activate the way sets up to be linked together with central combustion chamber, sets up negative pressure suction device simultaneously at the furnace body feed end, then during negative pressure suction device starts the negative pressure that produces and can inhale central combustion chamber with the air outside the furnace body and the activation tail gas that produces in the activation way, activation tail gas and air burn in central combustion chamber and produce the high temperature flue gas, under negative pressure suction, the high temperature flue gas flows to the furnace body feed end from the furnace body discharge end, realizes the omnidirectional heat supply to activation way.

Under the negative pressure suction of the negative pressure suction device, the activated tail gas and the high-temperature flue gas cannot escape from the activation furnace, so that the step of leading the activated tail gas and the high-temperature flue gas out of the activation furnace, purifying and then leading the activated tail gas and the high-temperature flue gas back to the activation furnace is omitted, heat exchange between the high-temperature flue gas and the activation channel can be directly carried out in situ in the activation furnace, the heat loss of the activated tail gas and the high-temperature flue gas is greatly reduced, the adaptive activation temperature in the activation channel is ensured to be kept all the time, and the energy consumption is greatly reduced.

Preferably, in the above multi-tubular activated carbon processing apparatus, the air inlet is provided in an outer peripheral wall of the furnace body. The air inlet on the outer peripheral wall of the furnace body is not opposite to the material outlet end of the activation channel, and the proceeding of the activation reaction in the activation channel is not influenced.

Further preferably, in the above multi-tubular activated carbon processing apparatus, the air inlets have at least one row arranged circumferentially around the furnace body, and each row has at least two air inlets arranged axially along the furnace body.

Preferably, in the multi-tubular activated carbon processing equipment, the air inlet is provided with a flow regulating valve. The flow regulating valve facilitates adjustment of the opening size of the air inlet to control the amount of air intake into the central combustion chamber.

In the multi-tube type active carbon processing equipment, the negative pressure outlet of the central combustion chamber is hermetically provided with an isolation sleeve for preventing the central combustion chamber and the activation channel from being communicated at the feed end of the furnace body;

the feed end of the furnace body is hermetically provided with a self-feeding device used for conveying carbonized materials to each activation channel, and the outer end of the isolation sleeve penetrates through the self-feeding device and is provided with a negative pressure outlet communicated with the negative pressure suction device.

The self-feeding device is utilized to seal the feeding end of the furnace body, and the negative pressure outlet of the isolation sleeve is arranged outside the furnace body, so that the high-temperature flue gas is prevented from flowing into the activation channel.

In the above multi-tube active carbon processing equipment, the negative pressure suction device comprises a negative pressure fan, and a negative pressure passage between a negative pressure outlet of the isolation sleeve and the negative pressure fan is sequentially provided with a waste heat recovery device and a flue gas purification mechanism. After the activation channel is supplied with heat, a large amount of heat is still carried in the high-temperature flue gas, so that the heat in the high-temperature flue gas is recycled by using the waste heat recovery device, the temperature of the flue gas is reduced, and the flue gas can be discharged into the atmosphere after the flue gas is purified by the flue gas purification mechanism.

Preferably, in the above multi-tubular activated carbon processing facility, the waste heat recovery device includes:

the steam heater is used for exchanging heat with high-temperature flue gas from the central combustion chamber so as to heat low-temperature steam into high-temperature steam and generate middle-temperature flue gas;

the low-temperature steam generator is used for exchanging heat with the medium-temperature flue gas so as to heat hot water to obtain low-temperature steam and generate medium-temperature and low-temperature flue gas;

the condenser is used for exchanging heat with the medium-low temperature flue gas so as to heat cold water to obtain hot water.

The high-temperature flue gas exchanges heat with the steam heater, low-temperature steam in the steam heater is heated to high-temperature steam, the high-temperature steam can be input into the activation channel to participate in the activation of the carbonized material, and the temperature of the high-temperature flue gas is reduced to medium-temperature flue gas; then the medium-temperature flue gas exchanges heat with the low-temperature steam generator, water in the low-temperature steam generator is heated to obtain low-temperature steam and the low-temperature steam is conveyed to the steam heater, and the medium-temperature flue gas is cooled to be medium-low-temperature flue gas; finally, the medium-low temperature flue gas exchanges heat with a condenser, and cold water in the condenser is heated to obtain hot water which is conveyed to a low-temperature steam generator; the heat in the high-temperature flue gas is fully absorbed by the three-stage heat exchange, so that the heat is ensured to be free from loss.

In the multi-tube type active carbon processing equipment, the steam heater is positioned in the isolation sleeve or the central combustion chamber, and the low-temperature steam generator is communicated with the steam heater through a low-temperature steam input pipeline penetrating into the isolation sleeve;

a steam heating chamber communicated with the steam heater is further formed on the peripheral wall of the isolation sleeve, and a plurality of high-temperature steam output pipelines are arranged on the peripheral wall of the steam heating chamber; the high-temperature steam output pipelines extend along the activation channels in one-to-one correspondence with the high-temperature steam output pipelines, and a plurality of steam distribution openings are formed in each high-temperature steam output pipeline along the axial direction.

The steam heater in the isolation sleeve or the central combustion chamber can absorb the heat of the high-temperature flue gas to the maximum extent, and meanwhile, the high-temperature flue gas can also heat the peripheral wall of the isolation sleeve when passing through the isolation sleeve, so that the steam heating chamber arranged on the peripheral wall of the isolation sleeve can further carry out heat preservation or further temperature rise treatment on the high-temperature steam generated in the steam heater, the temperature of the high-temperature steam entering each activation channel is high enough, and the heat of the activation channels does not need to be consumed.

The utility model discloses in, high temperature steam output pipeline and activation way are the one-to-one setting, and set up the cloth vapour mouth of arranging along the axial on the high temperature steam output pipeline to make high temperature steam evenly distributed on each axial position that the activation was said, ensure that the activation reaction of each axial position department fully goes on, improve the activation efficiency of carbonization material.

In foretell multitube active carbon processing equipment, activation furnace gyration set up on the frame and from the feed end to discharge end downward sloping setting, from loading attachment include:

the activation furnace comprises an upper charging barrel, a plurality of material blocking sheets, a plurality of material guiding channels and a plurality of material guiding channels, wherein the upper charging barrel is connected to the activation furnace in a sealing manner and synchronously rotates along with the activation furnace;

the bottom of the hopper is provided with a feeding pipe extending into the charging barrel, and an infrared sensor for monitoring the amount of carbonized materials in the hopper is arranged in the hopper;

a storage bin;

the spiral conveying mechanism is used for conveying the carbonized materials in the storage bin to the hopper;

and the controller is used for receiving the output signal of the infrared sensor and controlling the work of the spiral conveying mechanism according to the output signal.

The utility model discloses in, with activation furnace from the feed end to discharge end downward sloping setting, be convenient for feed cylinder material loading on the one hand, be convenient for the activation product in saying from the discharge end ejection of compact on the one hand. Wherein, go up the feed cylinder and fix the feed end that sets up at the activation furnace, consequently go up the feed cylinder itself and also have certain inclination. When feeding, the carbonized material in the hopper falls into the charging barrel from the feeding pipe, is caught by the material blocking sheet and is temporarily kept in the material guide channel; when no or little material is in the activation channel, the carbonized material in the material guide channel automatically slides into the activation channel, and when the material in the activation channel is enough, the carbonized material is stopped in the material guide channel to wait, so that the activation channel is ensured to be always kept in a material and uncongested state, the activation efficiency is ensured, and the condition of incomplete reaction caused by excessive carbonized material is avoided.

And moreover, because the material guide channels are open, the carbonized materials which do not enter the activation channels can flow among different material guide channels along with the rotation of the charging barrel, and the condition that the carbonized materials are retained but no materials or few materials exist in the activation channels can not occur.

The utility model adopts the screw conveying mechanism to convey the carbonized materials in the storage bin into the hopper; simultaneously, in order to avoid the hopper to be full of bins, still installed infrared sensor in the hopper with whether have the material in the real-time detection hopper. When the infrared sensor detects that the amount of the carbonized materials in the hopper is less than a preset value, a signal is sent to the controller, and the controller starts the spiral conveying mechanism to convey the carbonized materials in the storage bin into the hopper; stopping the spiral conveying mechanism when the hopper is full; therefore, the working personnel only need to fill the storage bin at intervals, and the automatic feeding can be realized through the feeding device.

Preferably, in the above multi-tube activated carbon processing apparatus, the material guide channel is arranged obliquely with respect to the axial direction of the upper charging barrel, and the oblique direction of the material guide channel is opposite to the rotation direction of the upper charging barrel at one end of the upper charging barrel close to the activation furnace.

So that the carbonized materials can slide into the corresponding product channels from the material guide channels more quickly.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

(1) The central combustion chamber is arranged in the center of the furnace body, and the plurality of activation channels are distributed on the periphery of the central combustion chamber in a planet way; on one hand, the inner diameter of each activation channel is reduced, the loading capacity of the carbonization material is not excessive, the uniform heating can be ensured, and the activation reaction is performed fully and quickly; on the other hand, the inner diameter of the central combustion chamber is enlarged, the heat is sufficient, and heat can be supplied to each activation channel in the whole axial direction and the whole circumferential direction; when the production system of the invention produces the activated carbon product with the same quality, the product yield is improved by more than 20 percent compared with the traditional activation equipment.

(2) The utility model discloses be linked together the discharge end that will activate the way and set up to be linked together with central combustion chamber, set up negative pressure suction device simultaneously at the furnace body feed end, then during negative pressure suction device starts the negative pressure that produces can inhale central combustion chamber with the air outside the furnace body and the activation tail gas that produces in the way of activating, the burning of activation tail gas and air produces the high temperature flue gas in central combustion chamber, under negative pressure suction, the high temperature flue gas flows to the furnace body feed end from the furnace body discharge end, realizes the omnidirectional heat supply to activating the way.

(3) The utility model discloses in, under negative pressure suction device's negative pressure suction, activation tail gas and high temperature flue gas all can not follow the activation furnace and have escaped, consequently removed from with activation tail gas, high temperature flue gas draw the step of leading back the activation furnace after purifying outside the activation furnace from, heat transfer between high temperature flue gas and the activation way can directly go on at the inside normal position of activation furnace, the calorific loss of the activation tail gas that has significantly reduced and high temperature flue gas ensures to keep the activation temperature of adaptation throughout in the activation way, energy consumption greatly reduced.

(4) In the utility model, the air inlet is arranged on the outer peripheral wall of the furnace body, so that the influence of the air inlet on the activation reaction in the activation channel due to the fact that the air inlet is over against the material outlet end of the activation channel is avoided; meanwhile, each air inlet is provided with a flow regulating valve to control the air inlet amount in the central combustion chamber.

(5) In the utility model, the self-feeding device is used for sealing the feed end of the furnace body, and the isolation sleeve is used for isolating the central combustion chamber from the activation channel at the feed end so as to prevent high-temperature flue gas from flowing into the activation channel; the isolated telescopic negative pressure export is seted up outside the furnace body to and negative pressure fan between form the negative pressure route, the utility model discloses still set up waste heat recovery device and flue gas purification mechanism on this negative pressure route to heat in retrieving the high temperature flue gas, reduce the flue gas temperature, treat that flue gas purification mechanism can discharge to the atmosphere after with flue gas purification.

(6) The utility model discloses in, waste heat recovery device produces high temperature steam through exchanging heat with high temperature flue gas and says in order to supply the activation, not only fully retrieves high temperature flue gas waste heat, avoids additionally setting up the heat source in order to produce high temperature steam moreover, greatly reduced the equipment energy consumption.

(7) In the utility model, the activation furnace is arranged from the feeding end to the discharging end in a downward inclination way, which is convenient for feeding the charging barrel on one hand and discharging the product in the activation channel from the discharging end on the other hand; wherein, the feeding barrel is fixedly arranged at the feeding end of the activation furnace, so that the feeding barrel also has a certain inclination angle. When feeding, the carbonized material in the hopper falls into the charging barrel from the feeding pipe, and is caught by the material blocking sheet and temporarily kept in the material guiding channel; when no or little material is in the activation channel, the carbonized material in the material guide channel automatically slides into the activation channel, and when the material in the activation channel is enough, the carbonized material is stopped in the material guide channel to wait, so that the activation channel is ensured to be always kept in a material and uncongested state, the activation efficiency is ensured, and the condition of incomplete reaction caused by excessive carbonized material is avoided. And because the material guide channel is open, along with the rotation of the charging barrel, the carbonized material which does not enter the activation channel can flow among different material guide channels, and the situation that the carbonized material is retained but no material or little material exists in the activation channel can not occur.

(8) The utility model adopts the screw conveying mechanism to convey the carbonized materials in the storage bin into the hopper; simultaneously, in order to avoid the hopper full storehouse, still installed infrared sensor in the hopper with whether have the material in the real-time detection hopper. When the infrared sensor detects that the amount of the carbonized materials in the hopper is less than a preset value, a signal is sent to the controller, and the controller starts the spiral conveying mechanism to convey the carbonized materials in the storage bin into the hopper; stopping the spiral conveying mechanism when the hopper is full; therefore, the working personnel only need to fill the storage bin at intervals, and the automatic feeding can be realized through the feeding device.

(9) The utility model arranges the material guiding channel in an inclined way relative to the axial direction of the charging barrel, and arranges the inclined direction of the material guiding channel opposite to the rotating direction of the charging barrel at one end of the charging barrel close to the activation furnace; so that the carbonized materials can slide into the corresponding product channels from the material guide channels more quickly.

Drawings

FIG. 1 is a schematic structural view of the multi-tubular activated carbon processing apparatus of the present invention;

FIG. 2 is a schematic structural view of the multi-tubular activated carbon processing apparatus of the present invention at another viewing angle;

FIG. 3 is a schematic view of the feed end of the activation furnace of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the activation furnace of FIG. 1;

FIG. 5 is a cross-sectional view of the insulation sleeve of FIG. 3;

fig. 6 is a schematic structural view of the upper cartridge of fig. 1.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1 and fig. 2, the multi-tube activated carbon processing apparatus of the present embodiment includes a base 1 and an activation furnace 2 rotatably disposed on the base 1 through a rotation driving mechanism 9, wherein the activation furnace 2 is disposed in a downward inclination from a feeding end to a discharging end, so as to facilitate feeding and discharging; the two ends of the activation furnace 2 are respectively provided with a self-feeding device 3 and a discharging device 4 in a sealing way.

As shown in fig. 3 and 4, the activation furnace 2 of the present embodiment includes a furnace body 21, wherein a central combustion chamber 22 and a plurality of activation channels 23 are formed in the furnace body 21 and extend along the axial direction of the furnace body 21; the central combustion chamber 22 has a larger inner diameter and is located at the center of the furnace body 21, and the activation passages 23 have a smaller inner diameter and are uniformly distributed on the periphery of the central combustion chamber 22. In the arrangement mode, the activation of the carbonized materials is dispersed in each activation channel 23 and is not required to be crowded in the same activation channel 23, so that the carbonized materials are uniformly heated, the activation reaction is fully performed, and the quality of the activated carbon product is high; also, the central combustion chamber 22 having a large volume can sufficiently supply heat to each activation passage 23.

In this embodiment, the central combustion chamber 22 is heated by: each activation channel 23 is arranged to be communicated with the central combustion chamber 22 at the discharge end, the negative pressure suction device 5 is arranged at the feed end of the furnace body 21, the peripheral wall of the furnace body 21 is provided with an air inlet 24 communicated with the central combustion chamber 22, and the negative pressure suction device 5 is adopted to suck the activated tail gas generated in each activation channel 23 and the air outside the furnace body 21 into the central combustion chamber 22 for combustion so as to release heat.

As shown in fig. 1 and 3, in order to ensure that the activation duct 23 communicates with the central combustion chamber 22 only at the discharge end thereof, each activation duct 23 is isolated from the central combustion chamber 22 in the furnace body 21; an isolation sleeve 25 for preventing the central combustion chamber 22 and the activation passage 23 from being communicated at the feed end of the furnace body 21 is also hermetically arranged at the feed end of the furnace body 21 and the negative pressure outlet of the central combustion chamber 22; the outer end of the isolation sleeve 25 extends to the outer side of the feeding device 3 and is in running fit with the frame 7; the underpressure outlet 25a of the insulating sleeve 25 opens out on the circumferential wall of the insulating sleeve 25, which obviously should also be located outside the charging device 3.

In the present embodiment, the negative pressure suction device 5 includes a negative pressure fan 51 and a sealed duct communicating the negative pressure fan 51 with the central combustion chamber 22 to form a negative pressure passage between the negative pressure fan 51 and the central combustion chamber 22.

After the activated tail gas and the high-temperature flue gas generated by the air in the central combustion chamber 22 supply heat to each activation passage 23, a large amount of heat is still carried; in order to fully utilize the heat, the waste heat recovery device 6 is arranged on the negative pressure passage in the embodiment to recover and utilize the heat contained in the high-temperature flue gas.

As shown in fig. 1, the heat recovery device 6 of the present embodiment includes a low temperature steam generator 61 for generating low temperature steam, which enters a steam heater 63 from a low temperature steam input pipe 62; and the steam heater 63 serves to heat the low-temperature steam into high-temperature steam.

As shown in fig. 1, the waste heat recovery device 6 of the present embodiment includes a condenser 66 for generating hot water, which is introduced into the low temperature steam generator 61 from a hot water input pipe 67; a low temperature steam generator 61 for generating low temperature steam, which enters the steam heater 63 through a low temperature steam input pipe 62; and the steam heater 63 serves to heat the low-temperature steam into high-temperature steam.

As shown in fig. 1, the condenser 66 of the present embodiment includes a first shell and a first heat exchange tube disposed in the first shell, a shell-side inlet of the first shell is connected to the water tank, and a shell-side outlet is communicated with the low temperature steam generator 61 through a hot water input pipe 67; the tube side inlet of the first heat exchange tube is communicated with the low-temperature steam generator 61, and the tube side outlet is communicated with the flue gas purification mechanism 8. The low-temperature steam generator 61 comprises a second shell and a second heat exchange tube arranged in the second shell, wherein a shell pass inlet of the second shell is communicated with a hot water input pipeline, and a shell pass outlet of the second shell is communicated with a low-temperature steam input pipeline 62; the tube pass inlet of the second heat exchange tube is communicated with the negative pressure outlet of the isolation sleeve 25, and the tube pass outlet is communicated with the tube pass inlet of the condenser.

As shown in fig. 5 and fig. 1 and 3, the steam heater 63 of the present embodiment is located in the isolation sleeve 25 (or may be directly disposed in the combustion chamber 22 or extend from the isolation sleeve 25 to the combustion chamber 22), and the steam outlet 62a of the low-temperature steam input pipe 62 extends to the end of the steam heater 63 away from the low-temperature steam generator 61 after penetrating into the steam heater 63; the low-temperature steam input pipeline 62 is fixed in the isolation sleeve 25 through a support rod 26; an annular steam heating chamber 25b is formed on the peripheral wall of the isolation sleeve 25, one end of the steam heater 63 close to the low-temperature steam generator 61 is communicated with the steam heating chamber 25b through a communicating pipe 25c, and the communicating pipe 25c also plays a role of fixing the steam heater 63 in the isolation sleeve 25; the number of the communicating pipes 25c may be set according to specific needs, and three communicating pipes are provided in this embodiment.

In this way, under the suction of the negative pressure fan 51, the high-temperature flue gas generated in the combustion chamber 22 first passes through the steam heater 63, and heats the steam heater 63 and the steam heating chamber 25b; on one hand, the heat exchange is carried out with the low-temperature steam in the steam heater 63 to generate middle-temperature flue gas and high-temperature steam, and the high-temperature steam enters the steam heating chamber 25b through the communicating pipe 25c for heat preservation or further temperature rise; the medium temperature flue gas leaves the isolation sleeve 25 under the negative pressure suction and enters the low temperature steam generator 61, hot water exchanges heat in the low temperature steam generator 61, the generated low temperature steam enters the steam heater 63 from the low temperature steam input pipeline 62, and the medium temperature flue gas is converted into medium and low temperature flue gas; the medium-low temperature flue gas continuously enters the condenser 66, exchanges heat with cold water in the condenser 66, and the generated hot water enters the low-temperature steam generator 61 from the hot water input pipeline 67.

The three-stage heat exchange realizes the maximum utilization of the waste heat of the high-temperature flue gas, and the heat carried by the medium-low temperature flue gas after the heat exchange with the condenser is low, so that the flue gas can be directly discharged into the atmosphere after being purified and removed by the flue gas purification mechanism 8.

As shown in fig. 3 and 5, the periphery of the isolation sleeve 25 is hermetically connected with a plurality of high-temperature steam output pipelines 64 communicated with the steam heating chamber 25b, the number of the high-temperature steam output pipelines 64 is one-to-one corresponding to that of the activation channels 23, each high-temperature steam output pipeline 64 extends along the corresponding activation channel 23, and each high-temperature steam output pipeline 64 is provided with a plurality of steam distribution openings, and all the steam distribution openings are axially arranged along the high-temperature steam output pipelines 64; the high-temperature steam in the steam heating chamber 25b is delivered to each activation channel 23 one by one through each high-temperature steam output pipeline 64, so that the carbonized materials are activated.

As shown in fig. 5, the connection positions of the communicating tube 25c and the high-temperature steam output pipe 64 to the insulation sleeve 25 are preferably staggered with each other to prolong the stay time of the high-temperature steam in the steam heating chamber 25b and ensure that the high-temperature steam sufficiently absorbs heat from the peripheral wall of the insulation sleeve 25.

As shown in fig. 1, a three-way valve 65 is further installed on the low temperature steam input pipe 62, one inlet of the three-way valve 65 is connected to the low temperature steam generator 61 through the low temperature steam input pipe 62, the other inlet of the three-way valve 65 is connected to an air input pipe (not shown), and the outlet of the three-way valve 65 is connected to the steam heater 63 through the low temperature steam input pipe 62.

In the initial stage of the activation reaction, air can be fed into the activation channel 23 through an air input pipeline or mixed with steam to support combustion of the carbonized material to raise the temperature and generate initial activated tail gas; in the later stage of the activation reaction, the air input pipeline can be closed or the air input quantity can be reduced, so that the activation pipeline 23 is kept in a relatively anoxic state, the burning loss of the carbonized material is reduced, and the yield of the product is improved. The activation reaction occurring in each activation lane 23 can be expressed by the following equation: c + HO ₂ +O ₂ →CO ₂ +H ₂ +C→2CO+H ₂ 。

As shown in fig. 6, which is combined with fig. 1 and fig. 2, the self-feeding device 3 of the present embodiment includes an upper charging barrel 31 which is hermetically connected to the activation furnace 2 and synchronously rotates with the activation furnace 2, two ends of the upper charging barrel 31 are open, one end of the upper charging barrel is directly hermetically connected to the activation furnace 2, and the other end of the upper charging barrel is hermetically mixed and sealed at the periphery of the isolation sleeve 25 by packing and steel sheets; the inner peripheral wall of the charging barrel 31 is provided with a plurality of material blocking sheets 32, a material guiding channel 33 is formed between two adjacent material blocking sheets 32, and the material guiding channels 33 and the activation channels 23 are also arranged in one-to-one correspondence.

The self-feeding device 3 further comprises a hopper 34 fixedly mounted on the frame 7, the bottom of the hopper 34 being provided with a feeding pipe 35 extending into the upper charging barrel 31.

During feeding, the carbonized material in the hopper 34 falls into the charging barrel 31 from the feeding pipe 35, and is caught by the material blocking sheet 32 and stays in the material guiding channel 33; because the charging barrel 31 and the activation furnace 2 are both arranged from the charging end to the discharging end in a downward inclined manner, when no material or little material exists in the activation channel 23, the carbonized material in the material guide channel 33 automatically slides into the activation channel 23, when the material in the activation channel 23 is enough, the carbonized material is stopped in the material guide channel 33 to wait, the activation channel 23 is ensured to be always kept in a material and uncongested state, the activation efficiency is ensured, and the condition of incomplete reaction caused by excessive carbonized material is avoided. Moreover, because the material guiding channels 33 are open, the carbonized materials which do not enter the activation channel 23 can flow between different material guiding channels 33 along with the rotation of the charging barrel 31, and the situation that the carbonized materials are retained but no or few materials exist in the activation channel 23 can not occur.

In order to further improve the material guiding effect of the material guiding channel 33 and promote the carbonized materials to rapidly enter the corresponding activation channel 23, the material guiding channel 33 is axially arranged obliquely relative to the upper charging barrel 31, and the oblique direction of the material guiding channel 33 is opposite to the rotating direction of the upper charging barrel 31 at one end of the upper charging barrel 31 close to the activation furnace 2.

As shown in FIG. 2, in this embodiment, a screw conveyor 36 is used to feed the carbonized material in a storage bin 37 into a hopper 34. Meanwhile, in order to prevent the hopper 34 from being full, an infrared sensor is installed in the hopper 34 to detect whether there is material in the hopper 34 in real time. When the infrared sensor detects that the amount of the carbonized materials in the hopper 34 is less than a preset value, a signal is sent to the controller, and the controller starts the spiral conveying mechanism 36 to convey the carbonized materials in the storage bin 37 into the hopper 34; stopping the screw conveying mechanism 36 when the hopper 34 is full; therefore, the worker only needs to fill the storage bin 37 at intervals, and full-automatic feeding can be realized through the feeding device 3.

The working principle of the multi-tube type active carbon processing equipment is as follows:

an infrared sensor in the hopper 34 detects the amount of the carbonized material in the hopper in real time, when the detected amount of the carbonized material is smaller than a preset value, a signal is sent to a controller, the controller starts a spiral conveying mechanism 36, the spiral conveying mechanism 36 conveys the carbonized material in a storage bin 37 into the hopper 34 at a preset speed, and conveying is stopped when the hopper 34 is full; the carbonized material in the hopper 34 falls into the upper charging barrel 31 through the feeding pipe 35 at a certain speed and falls into the material guiding channel 33;

starting the rotary driving mechanism 9 to enable the activation furnace 2 to rotate, enabling the charging barrel 31 and the activation furnace 2 to rotate synchronously, and enabling the carbonized materials in the material guide channel 33 to automatically enter the corresponding activation channel 23 in the rotating process until the activation channel 23 is full of the carbonized materials; with the proceeding of the activation reaction in the activation channel 23, the obtained activated carbon is continuously discharged, and then the material guide channel 33 also continuously feeds the corresponding activation channel 23;

when the activation starts, the furnace tail cover 27 at the discharge end of the activation furnace 2 is firstly opened, the carbonized materials in each activation channel 23 are ignited by gas, and a small amount of air is conveyed into each activation channel 23 from the air conveying pipeline through the high-temperature steam output pipeline 64, so that the carbonized materials in each activation channel 23 are firstly combusted to generate activated tail gas;

then the furnace tail cover 27 is closed in a sealing way, the negative pressure fan 51 is started, and the activated tail gas and air are sucked into the central combustion chamber 22, so that the activated tail gas is fully combusted to generate high-temperature flue gas; on one hand, the high-temperature flue gas further supplies heat to each activation channel 23, on the other hand, the high-temperature flue gas firstly penetrates through the isolation sleeve 25 under the negative pressure suction to heat the steam heater 63 and the isolation sleeve 25, low-temperature steam in the steam heater 63 is heated and then converted into high-temperature steam, the high-temperature steam enters the steam heating chamber 25b through the communicating pipe 25c to be subjected to heat preservation or further temperature rise, and finally enters the corresponding activation channel 23 through the high-temperature steam output pipeline 64 to react with a carbonized material; after high-temperature steam enters the activation channel 23, the air conveying capacity of the air conveying pipeline can be reduced, and the activation channel 23 is ensured to be in a relatively anoxic state;

after heat exchange with low-temperature steam, the high-temperature flue gas is converted into medium-temperature flue gas, the medium-temperature flue gas passes through the low-temperature steam generator 61 under negative pressure suction, hot water in the low-temperature steam generator 61 is heated to generate low-temperature steam, the low-temperature steam enters the steam heater 63 through the low-temperature steam input pipeline 62, and the medium-temperature flue gas is converted into medium-temperature and low-temperature flue gas; the medium-low temperature flue gas continuously enters the condenser 66, exchanges heat with cold water in the condenser 66, and the generated hot water enters the low-temperature steam generator 61 from the hot water input pipeline 67;

after heat exchange with cold water, the medium-low temperature flue gas is converted into normal temperature flue gas, and is directly discharged into the atmosphere after being purified by the flue gas purification mechanism 8 to remove carbon particles, dust particles and the like.

Claims (10)

1. The multi-tube type activated carbon processing equipment comprises an activation furnace (2), and is characterized in that the activation furnace (2) comprises a furnace body (21), a central combustion chamber (22) and a plurality of activation channels (23) which are circumferentially distributed on the periphery of the central combustion chamber (22) are arranged in the furnace body (21), the central combustion chamber (22) and the activation channels (23) axially extend along the furnace body (21), and the discharge ends of the activation channels (23) are communicated with the central combustion chamber (22);

the negative pressure suction device is characterized in that a negative pressure suction device (5) communicated with the central combustion chamber (22) is arranged at the feeding end of the furnace body (21), an air inlet (24) communicated with the central combustion chamber (22) is formed in the furnace body (21), and the negative pressure suction device (5) is used for sucking air and activated tail gas generated in each activation channel (23) into the central combustion chamber (22) to be combusted and released to supply heat to each activation channel (23).

2. The apparatus for processing multi-tubular activated carbon according to claim 1, wherein the air inlet is provided in the outer peripheral wall of the furnace body (21).

3. The multi-tubular activated carbon processing apparatus according to claim 2, wherein the air inlets (24) have at least one row arranged circumferentially around the furnace body, and each row of air inlets (24) has at least two arranged axially along the furnace body (21).

4. The multi-tubular activated carbon processing apparatus according to claim 1, wherein a flow regulating valve is provided at the air inlet (24).

5. The multi-tube activated carbon processing equipment as claimed in any one of claims 1 to 4, wherein the negative pressure outlet of the central combustion chamber (22) is hermetically provided with an isolation sleeve (25) which prevents the central combustion chamber (22) and the activation channel (23) from communicating at the feed end of the furnace body (21);

the feed end of the furnace body (21) is hermetically provided with a self-feeding device (3) used for conveying carbonized materials to each activation channel (23), and the outer end of the isolation sleeve (25) penetrates through the self-feeding device (3) and is provided with a negative pressure outlet communicated with the negative pressure suction device (5).

6. The multi-tube active carbon processing equipment according to claim 5, wherein the negative pressure suction device (5) comprises a negative pressure fan (51), and a waste heat recovery device (6) and a flue gas purification mechanism (7) are sequentially arranged on a negative pressure passage between the negative pressure outlet of the isolation sleeve (25) and the negative pressure fan (51).

7. The multi-tubular activated carbon processing apparatus according to claim 6, wherein the waste heat recovery device (6) comprises:

the steam heater (63) is used for exchanging heat with high-temperature flue gas from the central combustion chamber (22) so as to heat low-temperature steam into high-temperature steam and generate middle-temperature flue gas;

the low-temperature steam generator (61) is used for exchanging heat with the medium-temperature flue gas so as to heat hot water to obtain low-temperature steam and generate medium-temperature and low-temperature flue gas;

the condenser (66) is used for exchanging heat with the medium-low temperature flue gas so as to heat the cold water to obtain hot water.

8. The multitubular activated carbon processing apparatus according to claim 7, characterized in that the steam heater (63) is provided in the insulating sleeve (25) or the central combustion chamber (22), and the low-temperature steam generator (61) is connected to the steam heater (63) through a low-temperature steam feed pipe (62) penetrating the insulating sleeve (25);

a steam heating chamber (25 b) communicated with the steam heater (63) is formed on the peripheral wall of the isolation sleeve (25), and a plurality of high-temperature steam output pipelines (64) are arranged on the peripheral wall of the steam heating chamber (25 b); the high-temperature steam output pipelines (64) extend along the activation channels (23) which are in one-to-one correspondence with the high-temperature steam output pipelines, and a plurality of steam distribution ports are formed in each high-temperature steam output pipeline (64) along the axial direction in each activation channel (23).

9. The multi-tubular activated carbon processing apparatus according to claim 5, wherein the activation furnace (2) is rotatably installed on the machine base (1) and is inclined downward from the feeding end to the discharging end, and the self-feeding device (3) comprises:

the device comprises an upper charging barrel (31), wherein the upper charging barrel (31) is connected to an activation furnace (2) in a sealing manner and synchronously rotates along with the activation furnace (2), a plurality of material blocking pieces (32) are arranged on the inner peripheral wall of the upper charging barrel (31), a material guide channel (33) is formed between every two adjacent material blocking pieces (32), and the material guide channels (33) and the activation channels (23) are arranged in a one-to-one correspondence manner;

the device comprises a hopper (34), wherein a feeding pipe (35) extending into an upper charging barrel (31) is arranged at the bottom of the hopper (34), and an infrared sensor for monitoring the amount of carbonized materials in the hopper (34) is arranged in the hopper (34);

a storage bin (37);

the spiral conveying mechanism (36), the spiral conveying mechanism (36) is used for conveying the carbonized materials in the storage bin (37) to the hopper (34);

and the controller is used for receiving the output signal of the infrared sensor and controlling the work of the spiral conveying mechanism (36) according to the output signal.

10. The multi-tubular activated carbon processing apparatus as claimed in claim 9, wherein the material guiding passage (33) is axially inclined with respect to the upper barrel (31), and the direction of inclination of the material guiding passage (33) is opposite to the direction of rotation of the upper barrel (31) at an end of the upper barrel (31) adjacent to the activation furnace (2).

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