CN112625714B

CN112625714B - Environment-friendly production line for producing carbon by using organic wastes and production method thereof

Info

Publication number: CN112625714B
Application number: CN202011526171.XA
Authority: CN
Inventors: 季和冲
Original assignee: Zhejiang Shengmu New Energy Co ltd
Current assignee: Zhejiang Shengmu New Energy Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-05-28
Anticipated expiration: 2040-12-22
Also published as: CN112625714A

Abstract

The invention relates to an environment-friendly production line for producing carbon by using organic wastes and a production method thereof, which sequentially comprise a feeding section, a drying section, a separating section, a forming section, a discharging section and a cracking section according to a working sequence; the drying section comprises a heat recovery furnace, a drying pipe assembly and a second fan, an exhaust port of the heat recovery furnace is communicated with the inlet end of the first drying assembly to realize the mixing of heat flow and materials and the drying of the materials, and the materials move towards the outlet end along the inlet end of the drying pipe assembly under the action of the second fan; the cracking section is used for cracking the semi-finished product of the material to form a carbon rod, and an exhaust port of the cracking section is communicated with the heat recovery furnace to realize heat recovery; the beneficial effects are that: the process improves the automation degree of the whole machine, reduces the labor cost, is simple and convenient, consumes less power and further reduces the production cost.

Description

Environment-friendly production line for producing carbon by using organic wastes and production method thereof

Technical Field

The invention relates to the technical field of environment-friendly equipment, in particular to an environment-friendly production line for producing carbon by using organic wastes and a production method thereof.

Background

At present, the treatment of waste organic matters becomes a difficult problem in the fields of industry, agriculture and life, such as organic matters like wood chips, straws and wheat straws, and the organic wastes can be treated only by burning, but the burning of the organic matters like the straws can cause serious pollution to the atmosphere and cannot be burned.

Charcoal is widely used in various fields, for example, people commonly use charcoal as a fuel for heating, barbecuing and chafing dish, and particularly machine-made charcoal is more and more favored because of no smoke smell, large heat productivity and long burning time.

At present, the production method for preparing carbon from organic wastes is complex and tedious in process and high in production cost, and the materials are dried in a roller type manner, so that a large amount of materials are accommodated, ignition points are easily generated during drying, and fire hazards are high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an environment-friendly production line for producing carbon by using organic wastes and a production method thereof, so as to solve the technical problems.

The technical scheme of the invention is realized as follows: an environment-friendly production line for producing carbon by using organic wastes sequentially comprises a feeding section, a drying section, a separating section, a forming section, a discharging section and a cracking section according to a working sequence;

the feeding section comprises a storage bin, a feeding pipe and a first fan, and the first fan is used for pumping the materials in the storage bin to the feeding pipe and conveying the materials to the drying section from the outlet end of the feeding pipe;

the drying section comprises a heat recovery furnace, a drying pipe assembly and a second fan, an exhaust port of the heat recovery furnace is communicated with an inlet end of the first drying assembly to realize mixing of heat flow and materials and drying of the materials, and the materials move towards an outlet end along an inlet end of the drying pipe assembly under the action of the second fan;

the separation section comprises a plurality of separators;

the forming section comprises a channel type auger and an extruder, the inlet end of the auger is communicated with the outlet ends of the separators, the lower end of the auger is provided with a plurality of feed openings, each feed opening corresponds to one extruder, and the extruder is used for forming and extruding materials to the discharge section;

the cracking section is used for cracking the semi-finished product of the material to form a carbon rod, and an exhaust port of the cracking section is communicated with the heat recovery furnace to realize heat recovery.

By adopting the technical scheme, materials enter the feeding pipe from the bin, the materials are sucked into the drying pipe assembly through the feeding pipe under the driving of the first fan, the heat recovery furnace ignites to generate heat flow, the heat flow and the materials are mixed in the drying pipe assembly and continuously move from the inlet end to the outlet end of the drying pipe, the drying effect is excellent in the long process, the movement is orderly, the blockage cannot be caused, the channel type volume is small, the fire disaster is not easy to happen, the whole pipeline is communicated with the end-stage equipment and can directly supply air to the end-stage equipment, the materials enter the separator from the outlet end of the drying pipe assembly and spirally descend, the caliber of the separator is gradually increased from top to bottom so as to reduce the wind speed and the raised dust, the materials enter the auger and are stirred by the auger, the materials fall into the corresponding extruder when passing through each outlet to be extruded and molded, and the semi-finished products move towards the discharging, the semi-finished products are completely collected and placed in the frame, then the cracking furnace is opened, the semi-finished products are completely filled in the cracking furnace, the cracking furnace is ignited, the ignition is stopped after a certain time, the finished products are taken out after the self heat preservation of the cracking furnace is carried out for 6-12 hours, heat generated in the cracking furnace in the heat preservation process is recovered to the heat recovery furnace for recycling, a safety pipeline is arranged on the heat recovery furnace and used for exhausting the excessive gas in the heat recovery furnace to prevent explosion, the process improves the automation degree of the whole machine, the labor cost is reduced, the process is simple and convenient, the power consumption is low, and the production cost is further reduced.

The invention is further configured to: the drying pipe assembly comprises a first drying group and a second drying group, the first drying group comprises a first pipeline, a first partition pipe and a second pipeline, the outlet end of the first pipeline is communicated with the upper end of the outer side wall of the first partition pipe, the inlet end of the second pipeline is communicated with the lower end of the outer side wall of the first partition pipe, the other end of the second pipeline extends upwards to penetrate through the top and the bottom of the first partition pipe in sequence, the outlet end of the second pipeline is communicated with second air to realize that materials enter the first partition pipe from the first pipeline and then are extracted to the second drying group through the second pipeline, the second drying group comprises a third pipeline, a second partition pipe and a fourth pipeline, the inlet end of the third pipeline is communicated with a second fan, the outlet end of the third pipeline extends upwards to the top from the bottom of the second partition pipe and then extends downwards along the outer side of the second partition pipe to be communicated with the lower end of the outer side wall of the second partition pipe, the inlet end of the fourth pipeline is communicated with the upper end of the outer side wall of the second separation pipe, and the outlet end of the fourth pipeline is communicated with the separators, so that materials enter the second separation pipe from the third pipeline and then are discharged into the separators through the fourth pipeline.

By adopting the technical scheme, the second partition pipe and the third pipeline form a similar p shape, materials firstly enter the cavity of the first partition pipe along the first pipeline, then enter the second pipeline through the cavity of the first partition pipe, move to the second fan along the second pipeline, enter the third pipeline through the conversion of the second fan, circularly enter the inner cavity of the second partition pipe in the third pipeline and then enter the fourth pipeline through the inner cavity of the third pipeline, the drying pipe assembly can reduce the capacity, reduce the probability of fire and simultaneously prevent blockage, and the combination of the pipelines increases the time for drying the materials, so that the materials are dried more fully, enter the separator through the fourth pipeline for gas-solid separation, the dried materials downwards enter the auger, the second fan is a variable frequency fan, if the materials adopt wood chips, because can mix the iron nail in the saw-dust, consequently when the material by the second pipeline motion to second fan department, fan switching frequency for the light quilt of quality is absorb, and the heavy quilt of quality is stayed at the exit end department of second pipeline, and the exit end department lower extreme of second pipeline has seted up out the nail mouth for outside the iron nail discharge tube way.

The invention is further configured to: the utility model discloses a heat recovery stove, including heat recovery stove, first pipeline, fire tube, first heat preservation layer and fire-retardant layer, heat recovery stove's exhaust port department is equipped with except that the firetube, should remove the exit end of firetube and the entry end intercommunication of first pipeline, it is equipped with first igniter to remove in the firetube, one side that the heat recovery stove deviates from the gas vent is equipped with first igniter, first igniter produces the thermal current and supplies to remove in the firetube.

Through adopting above-mentioned technical scheme, should remove the firetube and can lock heat to the heat flow in the pipeline, prevent that the heat from losing extravagantly, play the effect that prevents the pipeline burning simultaneously, protect the pipeline, remove the firetube and still be equipped with 65 pipes near the one end of heat recovery stove gas vent, 65 pipes are the bending form, and first igniter ignites the intensification to the heat recovery stove.

The invention is further configured to: the pyrolysis section includes that a plurality of pyrolysis furnaces, second point firearm and every pyrolysis furnace correspond and is equipped with the blast pipe, be equipped with the water cooling plant who is used for carrying out the separation with the exhaust combustion gas liquid on the blast pipe, the pyrolysis furnace includes upper cover, heating port and is used for placing the semi-manufactured inner chamber of material, the upper cover can be dismantled with the pyrolysis furnace and be connected, the entry end and the upper cover intercommunication of blast pipe, the exit end and the heat recovery stove intercommunication of blast pipe, the heating port is used for igniting with the cooperation of second point firearm and fires the semi-manufactured goods of material in the second point firearm to the pyrolysis furnace.

By adopting the technical scheme, the cracking furnace is used for processing semi-finished products and processing the semi-finished products into carbon, the cracking furnace can process the semi-finished products without consuming a large amount of energy, the bottom of the outer side of the cracking furnace is provided with the heating port, the flame-throwing port of the second igniter is aligned to the heating port and carries out flame-throwing, so that the semi-finished products in the cracking furnace are burnt and ignited, the semi-finished products are heated within 40-50 minutes after the second igniter is ignited, at the moment, the second igniter is closed, the cracking furnace is kept warm, and because the middle part of the carbon is provided with the combustion-supporting through hole, the carbon at the bottom can fire the carbon above the carbon, the process does not need to use new energy, the energy-saving effect is achieved, the production cost is reduced, the carbon can generate substances such as methane, hydrogen, gaseous tar and the like in the burning process, and the substances are discharged through the exhaust port, when the gas-state tar is converted into a liquid state when cooled by the water cooling device, the methane and the hydrogen are discharged into the heat recovery furnace from the exhaust port and are reused, and the methane and the hydrogen are inflammable gases, so that the gas-state tar is combusted through the first igniter and is poured into the drying pipe assembly again if the gas-state tar is not treated and can explode.

The invention is further configured to: the water cooling device comprises an outer pipe which is arranged in a hollow mode, the exhaust pipe penetrates through the upper end and the lower end of the outer pipe, a water inlet pipe is arranged at the lower end of the outer side wall of the outer pipe, a water outlet pipe is arranged at the upper end of the outer side wall of the outer pipe, the outer pipe is cooled by circulating water of the exhaust pipe through the water inlet pipe and the water outlet pipe, a valve used for on-off of the water inlet pipe is arranged on the water inlet pipe, a pump body is connected onto the exhaust pipe and used for extracting gas in the cracking furnace and discharging the gas into.

Through adopting above-mentioned technical scheme, in the blast pipe lets in the outer tube, it holds water to form the cavity between outer tube and the blast pipe, tar in the blast pipe meets cold can the liquefaction, down along the blast pipe low current, discharge by the oil drain port, the oil extraction is because the density of liquid is greater than gaseous density, consequently methane, gas such as hydrogen can be discharged into in the heat recovery stove, can not spill from the oil drain port, because the inlet tube is located the lower extreme of outlet pipe, consequently can spill over from the outlet pipe after water is full, with this reach the endless purpose, play the efficient cooling effect.

The invention is further configured to: two stirring pieces with opposite stirring directions are arranged in the auger, the two stirring pieces realize circular stirring of materials, and the outlet end of the extruder faces the conveying mechanism.

Through adopting above-mentioned technical scheme, the setting up of this structure can let the material continuous circulation in the auger, need not additionally add the mouth of arranging the material, has reduced workman's work load, if not adopting circulating, the material can pile up needs the discharge to place the feed bin again, the further efficiency of work that has improved of this structure.

The invention is further configured to: the external connection of heat recovery stove has energy supply device, energy supply device is the water gas.

Through adopting above-mentioned technical scheme, this energy supply device can supply water to the water cooling plant, forms the hydrologic cycle, and this energy supply device is the energy supply of first igniter, and characteristics such as water gas cost is low, the consumption is low, the calorific value is high, pollution-free, no explosion hidden danger, the burning is abundant, and it can replace: the fuel is related fuels such as liquefied gas, natural gas, diesel oil, biological fuel, alcohol-based fuel, coal gas synthetic gas, water gas and the like, the water gas (fuel) is clean energy with ultra-purity and no pollution, the content of oxygen in water is up to 70%, different heat values can be achieved under different conditions, the application area is wide, the fuel is deeply concerned and favored by restaurant catering industry, industrial boilers, smelting and other industries, the heat is high, the cost is ultralow, so that the cost of vast users can be saved by about 50%, and the fuel is safe, environment-friendly, convenient and quick; and the preparation process is simple and convenient for operators to operate.

The invention is further configured to: the separation section still is connected with the dust removal section with shaping section department, the dust removal section includes dust removal case, oil smoke clarifier and odour removal device in proper order according to working order, the dust removal case is the sack dust removal, and raise dust and waste gas are inhaled to the dust removal case by separation section and shaping section department, odour removal device includes dry-type precision filter and UV photodissociation clarifier.

Through adopting above-mentioned technical scheme, the flying dust can be produced at the in-process of operation to the disengagement section and shaping section, and there is waste gas to discharge, filter impurity through the dust removal case, gaseous reentrant oil smoke clarifier, filter the oil smoke, reentrant odour removal device filters the smell, discharge in the air after accomplishing the filtration, solved the pollution problem to the air, further play the effect of environmental protection, be equipped with the ultraviolet lamp in the UV photodissociation clarifier, the disinfection of disinfecting to gas.

The invention is further configured to: the discharging section comprises a conveying mechanism and a plurality of automatic blanking devices for cutting off the formed semi-finished product of the material, the conveying mechanism comprises a smoke removing cover, a first conveying belt and a second conveying belt, the smoke removing cover is positioned at the upper end of the first conveying belt, the automatic blanking devices are connected on the first conveyor belt, each automatic blanking device is correspondingly matched with one extruder, the second conveyor belt is positioned at the outlet end of the first conveyor belt and below the first conveyor belt, the automatic blanking device comprises a feeding channel for semi-finished products to pass through, the inlet end of the feeding channel is matched with the extruder, one side of the outlet end of the semi-finished product is provided with a slidable induction plate and a push plate for separating the semi-finished product and pushing the semi-finished product to the conveying mechanism, the tablet and push pedal electric connection, when semi-manufactured goods tip contradicts the tablet, the tablet feeds back to the push pedal, and the push pedal starts.

Through adopting above-mentioned technical scheme, the material that the extruder was extruded is semi-manufactured goods, semi-manufactured goods tip advances until conflicting the tablet along feedstock channel always, after conflicting the tablet, tablet feedback to push pedal, the push pedal promotes forward, semi-manufactured goods cut off and fall into on the first conveyer belt, carry out the manual work by first conveyer belt conveying on the second conveyer belt and accomodate, this process can cool down semi-manufactured goods, make things convenient for workman's accomodating, be equipped with pressure sensor on the tablet, and the position of tablet is adjustable, can adjust the length of the required product of cutting apart, the setting up of tablet improves the unified shape of cutting apart, the length of product has been guaranteed.

An environment-friendly production line production method for producing carbon by using organic wastes comprises the following steps:

s1, operating a first fan, sucking materials in a storage bin into a feeding pipe and arranging the materials to a drying section;

s2, the second fan and the heat recovery furnace operate, the heat recovery furnace and the feeding pipe are extracted by the second fan, heat flow and materials are mixed, and the heat flow and the materials move to the outlet end of the drying pipe assembly;

s3, the material descends spirally along the separator, and the dust removal section is started to recover and filter the raised dust and the waste gas;

s4, stirring the materials in a packing auger, and then extruding and molding the materials in an extruder to form a semi-finished product;

s5, adjusting the position of the induction plate;

s6, enabling the semi-finished product to move towards an automatic blanking device on the conveying mechanism, enabling the end part of the semi-finished product to abut against the induction plate, pushing the semi-finished product by a pushing plate, and enabling the semi-finished product to fall into the first conveying belt in a segmented mode;

s7, collecting the semi-finished product, and filling the cracking furnace with the semi-finished product;

s8, igniting the cracking furnace by using a second igniter for 40-50 minutes, and then stopping heating;

s9, preserving the heat of the cracking furnace for 6-12 hours, and recycling the gas in the cracking furnace to the heat recovery furnace through an exhaust pipe;

and S10, opening the cracking furnace and taking out the carbon finished product.

By adopting the technical scheme, the heat recovery furnace is used for providing a heat source, materials and the heat source can be fully mixed in the drying pipe assembly, the materials can be fully dried in the process of moving in the drying pipe assembly, waste gas and raised dust can be discharged out of a production line through the separator, the materials are fully stirred and refined in the auger and then extruded and molded by the extruder to form a semi-finished carbon rod, the semi-finished carbon rod is collected, then the collected carbon rod is placed in the frame to fill the whole cracking furnace, the ignition is stopped after the cracking furnace is ignited for 45 minutes by the second igniter, the carbon at the bottom of the cracking furnace is combusted, the heat is preserved for 6 hours, namely, a finished product is obtained, substances such as methane, hydrogen, tar and the like generated in the combustion process of the cracking furnace are discharged from the exhaust port, the tar is liquefied and discharged, the methane and the hydrogen are introduced into the heat recovery furnace to be ignited and then reused, the mode saves the use of energy, reduces the production cost, reduces the occurrence of fire and improves the safety.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a water cooling apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a water cooling apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic view of the overall structure of the transfer mechanism according to the embodiment of the present invention;

FIG. 5 is a schematic view of a transfer mechanism according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view along AA in FIG. 5, in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of a buffer device according to an embodiment of the present invention;

FIG. 8 is a schematic view of the slider and the chute in accordance with an embodiment of the present invention;

FIG. 9 is a schematic diagram of a packing auger structure according to an embodiment of the present invention;

FIG. 10 is a schematic view of a fire removal tube according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of an automatic blanking device according to an embodiment of the present invention;

FIG. 12 is a schematic view of a cracking furnace according to an embodiment of the present invention.

Reference numerals: 1. a feeding section; 100. a storage bin; 101. a feed pipe; 102. a first fan; 2. a drying section; 200. a heat recovery furnace; 201. a second fan; 202. a first conduit; 203. a second conduit; 204. a first separator tube; 205. a third pipeline; 206. a fourth conduit; 207. a second separator tube; 208. a first igniter; 209. fire removing pipes; 210. a first insulating layer; 211. a flame retardant layer; 212. a nail outlet; 3. a separation section; 300. a separator; 4. a forming section; 400. a packing auger; 401. an extruder; 5. a discharging section; 500. a transport mechanism; 501. removing the smoke hood; 502. a first conveyor belt; 503. a second conveyor belt; 504. a driving roller; 505. fixing the rod; 506. a bearing seat; 507. an electric telescopic rod; 508. a fixing plate; 509. a buffer frame; 510. rolling a ball; 511. a first baffle plate; 512. a second baffle; 513. a chute; 514. a slider; 515. a feed channel; 516. a base plate; 517. a guard plate; 518. an induction plate; 519. pushing the plate; 520. a telescoping member; 521. a cylinder; 6. a cracking section; 600. a cracking furnace; 601. a second igniter; 602. an exhaust pipe; 603. an upper cover; 604. a heating port; 7. a dust removal section; 700. a dust removal box; 701. a lampblack purifier; 702. a deodorizing device; 703. a dust removal pipe; 8. a water cooling device; 800. an outer tube; 801. a water inlet pipe; 802. a water outlet pipe; 803. a valve; 804. a pump body; 805. an oil discharge port; 9. and an energy supply device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 12, the invention discloses an environment-friendly production line for producing carbon by using organic waste, which sequentially comprises a feeding section 1, a drying section 2, a separating section 3, a forming section 4, a discharging section 5 and a cracking section 6 according to a working sequence;

the feeding section 1 comprises a silo 100, a feeding pipe 101 and a first fan 102, wherein the first fan 102 is used for pumping the materials in the silo 100 to the feeding pipe 101 and conveying the materials to the drying section 2 from the outlet end of the feeding pipe 101;

the drying section 2 comprises a heat recovery furnace 200, a drying pipe assembly and a second fan 201, an exhaust port of the heat recovery furnace 200 is communicated with an inlet end of the first drying assembly to realize mixing of heat flow and materials and drying of the materials, and the materials move towards an outlet end along the inlet end of the drying pipe assembly under the action of the second fan 201;

the separation section 3 comprises a number of separators 300;

the forming section 4 comprises a channel type auger 400 and an extruder 401, the inlet end of the auger 400 is communicated with the outlet ends of the separators 300, the lower end of the auger 400 is provided with a plurality of feed openings, each feed opening corresponds to one extruder 401, and the extruder 401 is used for forming and extruding materials to a feed section 5;

the cracking section 6 is used for cracking the semi-finished product of the material to form a carbon rod, and an exhaust port of the cracking section 6 is communicated with the heat recovery furnace 200 to realize heat recovery. The material enters the feeding pipe 101 from the bin 100, the material is sucked into the drying pipe assembly through the feeding pipe 101 under the drive of the first fan 102, the heat recovery furnace 200 is ignited to generate heat flow, the heat flow and the material are mixed in the drying pipe assembly and continuously move from the inlet end to the outlet end of the drying pipe, the process is long, the drying effect is excellent, the movement is orderly, the blockage cannot be caused, the channel type capacity is small, the fire disaster is not easy to happen, the whole pipeline is communicated with the end-stage equipment and can directly supply air to the end-stage equipment, the material enters the separator 300 from the outlet end of the drying pipe assembly and spirally descends, the caliber of the separator 300 is gradually increased from top to bottom to reduce the wind speed and the raised dust, the material enters the auger 400 to be stirred and advances along with the auger 400, the material falls into the corresponding extruder 401 when passing through each outlet to be extruded and molded, the semi-finished product moves towards, the semi-finished products are all collected and placed in the frame, then the cracking furnace 600 is opened, the semi-finished products are all filled in the cracking furnace 600, the cracking furnace 600 is ignited, the ignition is stopped after a certain time, the finished products are taken out after the self heat preservation of the cracking furnace 600 is carried out for 6-12 hours, heat generated in the cracking furnace 600 in the heat preservation process is recovered to the heat recovery furnace 200 for reuse, and the heat recovery furnace 200 is provided with a safety pipeline for discharging the excessive gas in the heat recovery furnace 200 to prevent explosion.

The drying pipe assembly comprises a first drying group and a second drying group, the first drying group comprises a first pipeline 202, a first partition pipe 204 and a second pipeline 203, the outlet end of the first pipeline 202 is communicated with the upper end of the outer side wall of the first partition pipe 204, the inlet end of the second pipeline 203 is communicated with the lower end of the outer side wall of the first partition pipe 204, the other end of the second pipeline 203 extends upwards and sequentially penetrates through the top and the bottom of the first partition pipe 204, the outlet end of the second pipeline 203 is communicated with second wind to realize that materials enter the first partition pipe 204 from the first pipeline 202 and then are extracted to the second drying group through the second pipeline 203, the second drying group comprises a third pipeline 205, a second partition pipe 207 and a fourth pipeline 206, the inlet end of the third pipeline 205 is communicated with a second fan 201, and the outlet end of the third pipeline is upwards penetrated to the top from the bottom of the second partition pipe 207, the inlet end of the fourth pipeline 206 is communicated with the upper end of the outer side wall of the second separating pipe 207, and the outlet end of the fourth pipeline is communicated with the plurality of separators 300, so that the material enters the second separating pipe 207 from the third pipeline 205 and is discharged into the separators 300 through the fourth pipeline 206; the second separating pipe 207 and the third pipe 205 form a p-like shape, the material firstly enters the cavity of the first separating pipe 204 along the first pipe 202, then the cavity of the first separating pipe 204 enters the second pipe 203, moves to the second fan 201 along the second pipe 203, enters the third pipe 205 through the conversion of the second fan 201, circularly enters the inner cavity of the second separating pipe 207 in the third pipe 205, and then enters the fourth pipe 206 from the inner cavity thereof, the capacity can be reduced by adopting the drying pipe assembly, the probability of fire occurrence can be reduced, and the blockage can be prevented, and the combination of the pipes can increase the time for drying the material, so that the material is dried more fully, enters the separator 300 from the fourth pipe 206 for gas-solid separation, the completely dried material enters the auger 400 downwards, the second fan 201 is a variable frequency fan, if the material adopts wood chips, because can adulterate the iron nail in the saw-dust, consequently when the material by the second pipeline 203 motion to second fan 201 department, fan switching frequency for the light quilt of quality is absorb, and the heavy quilt of quality is detained at the exit end of second pipeline 203, and the exit end lower extreme of second pipeline 203 has seted up out nail mouth 212, is used for discharging the iron nail outside the pipeline.

A fire removing pipe 209 is arranged at the exhaust port of the heat recovery furnace 200, the outlet end of the fire removing pipe 209 is communicated with the inlet end of the first pipeline 202, a first heat preservation layer 210 and a flame retardant layer 211 are arranged in the fire removing pipe 209, a first igniter 208 is arranged at one side of the heat recovery furnace 200, which is far away from the exhaust port, and the first igniter 208 generates heat flow to be fed into the fire removing pipe 209; this remove firetube 209 can lock heat to the heat flow in the pipeline, prevents that the heat from losing extravagantly, plays the effect that prevents the pipeline burning simultaneously, protects the pipeline, removes the one end that firetube 209 is close to heat recovery furnace 200 gas vent and still is equipped with 65 pipes, and 65 pipes are crooked, and first igniter 208 ignites the intensification to heat recovery furnace 200.

The cracking section 6 comprises a plurality of cracking furnaces 600, a second igniter 601 and an exhaust pipe 602 which is correspondingly arranged on each cracking furnace 600, a water cooling device 8 which is used for separating gas and liquid discharged by the exhaust gas is arranged on each exhaust pipe 602, each cracking furnace 600 comprises an upper cover 603, a heating port 604 and an inner cavity which is used for placing a semi-finished material product, each upper cover 603 is detachably connected with each cracking furnace 600, the inlet end of each exhaust pipe 602 is communicated with the corresponding upper cover 603, the outlet end of each exhaust pipe 602 is communicated with the corresponding heat recovery furnace 200, and each heating port 604 is used for being matched with the corresponding second igniter 601 to realize that the corresponding second igniter 601 ignites and burns the semi-finished material product in each cracking furnace 600; the cracking furnace 600 is used for processing the semi-finished product, the semi-finished product is processed into charcoal, the cracking furnace 600 can process the semi-finished product without consuming a large amount of energy, the bottom of the outer side of the cracking furnace 600 is provided with a heating port 604, a flame jet of the second igniter 601 is aligned to the heating port 604 for flame jetting, so that the semi-finished product in the cracking furnace 600 is burnt and ignited, the second igniter 601 ignites for 40-50 minutes, the semi-finished product is heated, at the moment, the second igniter 601 is closed, the cracking furnace 600 self carries out heat preservation, as the middle part of the charcoal is provided with a combustion-supporting through hole, the charcoal at the bottom can fire the charcoal above the charcoal, new energy is not needed in the process, the energy-saving effect is achieved, the production cost is reduced, the charcoal can generate substances such as methane, hydrogen, gaseous tar and the like in the burning process, and the substances are discharged through an exhaust port, when passing through the water cooling device 8, the gaseous tar is converted into liquid when cooled, the methane and the hydrogen are discharged into the heat recovery furnace 200 from the exhaust port and are reused, and the methane and the hydrogen are inflammable gases, so that the methane and the hydrogen can explode if not processed, are combusted through the first igniter 208 and are poured into the drying pipe assembly again.

The water cooling device 8 comprises an outer pipe 800 which is arranged in a hollow manner, the exhaust pipe 602 penetrates through the upper end and the lower end of the outer pipe 800, the lower end of the outer side wall of the outer pipe 800 is provided with a water inlet pipe 801, the upper end of the outer side wall of the outer pipe is provided with a water outlet pipe 802, the water inlet pipe 801 and the water outlet pipe 802 realize the circulating water cooling of the outer pipe 800 on the exhaust pipe 602, the water inlet pipe 801 is provided with a valve 803 for switching on and off the water inlet pipe 801, the exhaust pipe 602 is connected with a pump body 804, the pump body 804 is used for extracting gas in the cracking furnace 600 and discharging the gas into the; the exhaust pipe 602 is communicated into the outer pipe 800, a cavity is formed between the outer pipe 800 and the exhaust pipe 602 to contain water, tar in the exhaust pipe 602 can be liquefied when being cooled, and flows down along the exhaust pipe 602 and is discharged from the oil discharge port 805, and the density of the discharged oil is greater than that of the gas, so that the gas such as methane, hydrogen and the like can be discharged into the heat recovery furnace 200 and cannot leak out from the oil discharge port 805, and the water inlet pipe 801 is positioned at the lower end of the water outlet pipe 802, so that the water can overflow from the water outlet pipe 802 after being full, the purpose of circulation is achieved, and the efficient cooling effect is achieved.

Two stirring pieces with opposite stirring directions are arranged in the auger 400, the two stirring pieces realize the circular stirring of materials, and the outlet end of the extruder 401 faces the conveying mechanism 500; the arrangement of the structure can lead the materials to continuously circulate in the auger 400, the material discharging port does not need to be additionally arranged, the workload of workers is reduced, if the material discharging port does not adopt a circulating mode, the materials can be accumulated and need to be discharged to be placed in the storage bin 100 again, and the structure further improves the working efficiency.

The outside of the heat recovery furnace 200 is connected with an energy supply device 9, and the energy supply device 9 is water gas; this energy supply device 9 can supply water to water cooling plant 8, forms the hydrologic cycle, and this energy supply device 9 supplies energy for first igniter 208, and according to the chinese invention patent of application number 201610012871.4, characteristics such as water gas cost is low, the consumption is low, the calorific value is high, pollution-free, no explosion hidden danger, the burning is abundant, and it can replace: the fuel is related fuels such as liquefied gas, natural gas, diesel oil, biological fuel, alcohol-based fuel, coal gas synthetic gas, water gas and the like, the water gas (fuel) is clean energy with ultra-purity and no pollution, the content of oxygen in water is up to 70%, different heat values can be achieved under different conditions, the application area is wide, the fuel is deeply concerned and favored by restaurant catering industry, industrial boilers, smelting and other industries, the heat is high, the cost is ultralow, so that the cost of vast users can be saved by about 50%, and the fuel is safe, environment-friendly, convenient and quick; the preparation process is simple, operation of operators is facilitated, and the water gas consists of 100 kg of methanol and 350-380 kg of water; 150mL of hydrogen peroxide; diluting 75 g of sodium hydroxide with 20 kg of water; diluting 100 g of potassium hydroxide with 20 kg of water; diluting 100 g of potassium chlorate with 20 kg of water; diluting 125 g of sodium peroxide with 20 kg of water; 125 g of potassium nitrate is diluted by 20 kg of water.

The separation section 3 and the forming section 4 are also connected with a dust removal section 7, the dust removal section 7 sequentially comprises a dust removal box 700, an oil smoke purifier 701 and a smell removal device 702 according to a working sequence, the dust removal box 700 is used for removing dust by a cloth bag, raised dust and waste gas are sucked into the dust removal box 700 from the separation section 3 and the forming section 4, and the smell removal device 702 comprises a dry-type precision filter and a UV photolysis purifier; separation section 3 and shaping section 4 can produce the raise dust at the in-process of operation, and there is waste gas to discharge, filter impurity through dust removal case 700, gaseous reentrant oil smoke clarifier 701, filter the oil smoke, reentrant odour removal device 702 filters the smell, discharge in the air after the filtration is accomplished, the pollution problem to the air has been solved, further the effect of environmental protection has been played, be equipped with the ultraviolet lamp in the UV photodissociation clarifier, disinfect the disinfection to gas, be equipped with dust removal pipe 703 on the dust removal case 700, the one end of dust removal pipe 703 stretches into in the separator 300, separator 300 is spiral separator 300.

The ejection of compact section 5 includes transport mechanism 500 and a plurality of automatic unloader that is used for cutting off the semi-manufactured goods of material after the shaping, transport mechanism 500 is including removing petticoat pipe 501, first conveyer belt 502 and second conveyer belt 503, it is located the upper end of first conveyer belt 502 to remove petticoat pipe 501, a plurality of automatic unloader are connected on first conveyer belt 502, and every automatic unloader corresponds extruder 401 of adaptation, second conveyer belt 503 is located the exit end of first conveyer belt 502 and is located its below, automatic unloader is including the feedstock channel 515 that supplies the semi-manufactured goods to pass through, the entry end of feedstock channel 515 cooperates with extruder 401, and its exit end one side is equipped with slidable tablet 518 and is used for cutting off the semi-manufactured goods and push pedal 519 to transport mechanism 500, tablet 518 and push pedal 519 electric connection, when the tablet 518 is contradicted to the semi-manufactured goods tip, the induction plate 518 feeds back to the push plate 519, and the push plate 519 is started; the material that extruder 401 extruded is semi-manufactured goods, semi-manufactured goods tip advances until conflicting tablet 518 along feedstock channel 515 always, conflict behind tablet 518, tablet 518 feeds back to push pedal 519, push pedal 519 promotes forward, semi-manufactured goods cut off and fall into on first conveyer belt 502, convey the worker by first conveyer belt 502 and accomodate on the second conveyer belt 503, this process can cool down semi-manufactured goods, make things convenient for workman's accomodating, be equipped with pressure sensor on the tablet 518, and tablet 518's position is adjustable, can adjust the length of the required product of cutting apart, the setting up of tablet 518 improves the unified shape of cutting apart, the length of product has been guaranteed.

The first conveyor belt 502 further comprises two transmission rollers 504, a bearing seat 506 for fixing the two transmission rollers 504, a base for supporting the bearing seat 506 and a buffer device, two fixing rods 505 are arranged between the two transmission rollers 504, the fixing rods 505 are welded on the bearing seat 506, the automatic blanking device is fixedly arranged between the first conveyor belt 502 and the smoke exhaust hood 501 through the fixing rods 505, the buffer device is two and the same in arrangement and is respectively and fixedly arranged at the inner sides of the two fixing rods 505, a space is arranged between the buffer device and the automatic blanking device, the buffer device comprises an electric telescopic rod 507 and a fixing plate 508 welded at the upper end of the electric telescopic rod 507, the fixing plate 508 is connected with a buffer frame 509 adjacent to the automatic blanking device through bolts, a plurality of rolling balls 510 arranged at intervals are movably connected on the buffer frame 509, a first baffle 511 is welded at one side of the buffer frame 509, which is far away from the automatic blanking device, a, a sliding groove 513 is formed in the second baffle 512, a sliding block 514 which is connected with the sliding groove 513 in a sliding mode is further arranged on the second baffle 512, the sliding block 514 protrudes out of the notch of the sliding groove 513, a spring is welded on the groove wall of the sliding groove 513, the other end of the spring is welded with the sliding block 514, a switch is fixedly installed on the first baffle 511, and the electric telescopic rod 507 is electrically connected with the switch; after the partition device is filled with the carbon raw material to be molded, the automatic blanking device obtains a semi-finished bar through extrusion, the semi-finished bar extruded by the automatic blanking device slowly slides onto the buffer device through the buffer device, the width of the buffer device is the same as that of the extruded semi-finished bar, when the semi-finished bar completely slides onto the buffer device, the buffer device slowly descends to a position below the height of the conveyor belt, and the semi-finished bar is taken out through the first conveyor belt 502, so that the semi-finished bar is prevented from falling, colliding and breaking, the yield of the semi-finished bar is improved, a space is reserved between the buffer device and the automatic blanking device, and the buffer device is prevented from being over-high in direct contact temperature with the buffer device to influence the equipment precision of the buffer device; the ball 510 on the fixing plate 508 facilitates the movement of the semi-finished bar, prevents the wear of the semi-finished bar and the upper end surface of the buffer frame 509, the first baffle 511 and the second baffle 512 play a role in preventing the semi-finished bar from deviating and sliding off, and the slider 514 on the second baffle 512, which is fixedly connected to the spring, plays a role in secondary buffering, so that the movement of the finished bar on the buffer frame 509 is more stable, the yield is improved, when the switches on the two buffer devices are extruded by the semi-finished bar stock, the electric telescopic rod 507 begins to descend to ensure that the semi-finished bar stock can be stably contacted with the conveyor belt, the yield is further improved, whether the material completely falls into the buffer devices is sensed through the switches, under the condition that materials exist, the electric telescopic rod 507 descends to enable the materials to be in contact with the first conveying belt 502, the materials are taken away by the first conveying belt 502, and when no materials exist, the electric telescopic rod 507 ascends to receive the materials.

The feeding channel 515 comprises a guard plate 517 and a bottom plate 516, the guard plate 517 is located on two sides of the bottom plate 516, one end of the guard plate 517 is close to the extruder 401, the other end of the guard plate is close to the push plate 519, the sensing plate 518 is provided with a pressure sensor and a control unit, the pressure sensor is used for receiving signals and feeding the signals back to the control unit, the control unit is used for controlling the motion of the push plate 519, one side of the push plate 519 is provided with a telescopic part 520 and a cylinder 521 used for controlling the telescopic part 520 to do telescopic motion, and the cylinder 521 is electrically connected with the control unit; this backplate 517's setting plays the effect to surplus section material protection, the part that conveniently needs to cut apart simultaneously cuts off, push pedal 519 is located between tablet 518 and backplate 517, a cut off the material, further efficiency that improves the wall, after tablet 518 is contradicted to the material, the signal that pressure sensor received, can in time feed back to the control unit, further improvement the efficiency of work, further improvement the automatic level of having worked through cylinder 521, the efficiency of work has been improved.

s1, operating a first fan 102, sucking materials in a storage bin 100 into a feeding pipe 101, and arranging the materials to a drying section 2;

s2, the second fan 201 and the heat recovery furnace 200 operate, the heat recovery furnace 200 and the feeding pipe 101 are extracted by the second fan 201, heat flow and materials are mixed, and the heat flow and the materials move towards the outlet end of the drying pipe assembly;

s3, the material descends spirally along the separator 300, and the dust removal section 7 is started to recover and filter the raised dust and the waste gas;

s4, stirring the materials in the packing auger 400, and then extruding and molding the materials in the extruder 401 to form a semi-finished product;

s5, adjusting the position of the induction plate 518;

s6, the semi-finished product moves towards the automatic blanking device on the conveying mechanism 500, the end part of the semi-finished product abuts against the induction plate 518, the push plate 519 pushes the semi-finished product, and the semi-finished product falls into the first conveying belt 502 in a segmented mode;

s7, collecting the semi-finished product, and filling the semi-finished product into the cracking furnace 600;

s8, igniting the cracking furnace 600 by using a second igniter 601 for 40-50 minutes, and then stopping heating;

s9, preserving the heat of the cracking furnace 600 for 6-12 hours, and recycling the gas in the cracking furnace 600 to the heat recovery furnace 200 through the exhaust pipe 602;

s10, opening the cracking furnace 600 and taking out the carbon finished product.

By adopting the technical scheme, the heat recovery furnace 200 is used for providing a heat source, materials and the heat source can be fully mixed in the drying pipe assembly, the materials can be fully dried in the process of moving in the drying pipe assembly, waste gas and raised dust can be discharged out of a production line through the separator 300, the materials are extruded and formed by the extruder 401 after being fully stirred and refined in the auger 400 to form a semi-finished carbon rod, the semi-finished carbon rod is collected, then the collected carbon rod is put into a frame to fill the whole cracking furnace 600, the cracking furnace 600 is ignited by the second igniter 601 for 45 minutes and then is stopped to be ignited, the carbon at the bottom of the cracking furnace 600 is burnt, the heat is preserved for 6 hours to obtain a finished product, the finished product can be taken out, substances such as methane, hydrogen, tar and the like generated in the burning process of the cracking furnace 600 are discharged from the exhaust port, the tar is liquefied and the methane and the hydrogen are both introduced into the heat recovery furnace 200 to be ignited for reuse, the mode saves the use of energy, reduces the production cost, reduces the occurrence of fire and improves the safety.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An environmental protection assembly line for producing carbon by using organic wastes is characterized in that: the device comprises a feeding section (1), a drying section (2), a separating section (3), a forming section (4), a discharging section (5) and a cracking section (6) in sequence according to the working sequence;

the feeding section (1) comprises a bin (100), a feeding pipe (101) and a first fan (102), wherein the first fan (102) is used for extracting materials in the bin (100) to the feeding pipe (101) and conveying the materials to the drying section (2) from an outlet end of the feeding pipe (101);

the drying section (2) comprises a heat recovery furnace (200), a drying pipe assembly and a second fan (201), an exhaust port of the heat recovery furnace (200) is communicated with an inlet end of the first drying assembly to realize mixing of heat flow and materials and drying of the materials, and the materials move towards an outlet end along the inlet end of the drying pipe assembly under the action of the second fan (201);

the separation section (3) comprises a number of separators (300);

the forming section (4) comprises a channel type packing auger (400) and extruders (401), the inlet end of the packing auger (400) is communicated with the outlet ends of the separators (300), the lower end of the packing auger (400) is provided with a plurality of feed openings, each feed opening corresponds to one extruder (401), and the extruders (401) are used for forming and extruding materials to the discharge section (5);

the cracking section (6) is used for cracking the semi-finished product of the material to form a carbon rod, and an exhaust port of the cracking section (6) is communicated with the heat recovery furnace (200) to realize heat recovery;

the drying pipe assembly comprises a first drying group and a second drying group, the first drying group comprises a first pipeline (202), a first partition pipe (204) and a second pipeline (203), the outlet end of the first pipeline (202) is communicated with the upper end of the outer side wall of the first partition pipe (204), the inlet end of the second pipeline (203) is communicated with the lower end of the outer side wall of the first partition pipe (204), the other end of the second pipeline (203) extends upwards to sequentially penetrate through the top and the bottom of the first partition pipe (204), the outlet end of the second pipeline (203) is communicated with second wind to realize that materials enter the first partition pipe (204) from the first pipeline (202) and then are extracted to the second drying group through the second pipeline (203), the second drying group comprises a third pipeline (205), a second partition pipe (207) and a fourth pipeline (206), the inlet end of the third pipeline (205) is communicated with a second fan (201), the outlet end of the second separating pipe (207) penetrates from the bottom to the top upwards, extends downwards along the outer side of the second separating pipe (207) and is communicated with the lower end of the outer side wall of the second separating pipe (207), the inlet end of the fourth pipeline (206) is communicated with the upper end of the outer side wall of the second separating pipe (207), and the outlet end of the fourth pipeline is communicated with the plurality of separators (300) so that materials enter the second separating pipe (207) from the third pipeline (205) and are discharged into the separators (300) through the fourth pipeline (206);

the air outlet department of heat recovery stove (200) is equipped with except that firetube (209), and this removes the exit end of firetube (209) and the entry end intercommunication of first pipeline (202), it is equipped with first heat preservation (210) and fire-retardant layer (211) to remove in firetube (209), one side that heat recovery stove (200) deviate from the air outlet is equipped with first igniter (208), first igniter (208) produce the heat current and supply in removing firetube (209).

2. The environment-friendly production line for producing charcoal by using organic waste as claimed in claim 1, wherein: cracking section (6) include that a plurality of cracking furnaces (600), second point firearm (601) and every cracking furnace (600) correspond and are equipped with blast pipe (602), be equipped with on blast pipe (602) and be used for carrying out water cooling plant (8) of separating with the exhaust combustion gas liquid, cracking furnace (600) include upper cover (603), heating port (604) and are used for placing the semi-manufactured inner chamber of material, upper cover (603) can be dismantled with cracking furnace (600) and be connected, the entry end and upper cover (603) the intercommunication of blast pipe (602), the exit end and the heat recovery stove (200) intercommunication of blast pipe (602), heating port (604) are used for and second point firearm (601) cooperation realize that second point firearm (601) ignite burning to the semi-manufactured material in cracking furnace (600).

3. The environment-friendly production line for producing charcoal by using organic waste as claimed in claim 2, wherein: water cooling plant (8) are including outer tube (800) that are the cavity setting, both ends about outer tube (800) are run through in blast pipe (602), the lateral wall lower extreme of outer tube (800) is equipped with inlet tube (801), and its lateral wall upper end is equipped with outlet pipe (802), inlet tube (801) and outlet pipe (802) realize outer tube (800) to the circulating water cooling of blast pipe (602), be equipped with valve (803) that are used for inlet tube (801) break-make on inlet tube (801), be connected with pump body (804) on blast pipe (602), this pump body (804) are used for extracting the gas in pyrolysis furnace (600) and arrange into in heat recovery stove (200), set up oil drain (805) that are used for filtering out tar on blast pipe (602).

4. The environment-friendly production line for producing charcoal by using organic waste as claimed in claim 1, wherein: two stirring pieces with opposite stirring directions are arranged in the auger (400), the two stirring pieces realize circular stirring of materials, and the outlet end of the extruder (401) faces to the conveying mechanism (500).

5. The environment-friendly production line for producing charcoal by using organic waste as claimed in claim 1, wherein: the external connection of heat recovery stove (200) has energy supply device (9), energy supply device (9) are water gas.

6. The environment-friendly production line for producing charcoal by using organic waste as claimed in claim 1, wherein: separation section (3) and shaping section (4) department still are connected with dust removal section (7), dust removal section (7) include dust removal case (700), oil smoke clarifier (701) and odour removal device (702) according to work order in proper order, dust removal case (700) are the sack dust removal, and raise dust and waste gas are inhaled to dust removal case (700) by separation section (3) and shaping section (4) department, odour removal device (702) include dry precision filter and UV photodissociation clarifier.

7. The environment-friendly production line for producing charcoal by using organic waste as claimed in claim 1, wherein: the automatic blanking device is characterized in that the discharging section (5) comprises a conveying mechanism (500) and a plurality of automatic blanking devices used for cutting off semi-finished materials after forming, the conveying mechanism (500) comprises a smoke removing cover (501), a first conveying belt (502) and a second conveying belt (503), the smoke removing cover (501) is located at the upper end of the first conveying belt (502), the automatic blanking devices are connected onto the first conveying belt (502), each automatic blanking device corresponds to one extruder (401), the second conveying belt (503) is located at the outlet end of the first conveying belt (502) and is located below the first conveying belt, each automatic blanking device comprises a feeding channel (515) for the semi-finished products to pass through, the inlet end of each feeding channel (515) is matched with the extruder (401), a slidable sensing plate (518) is arranged on one side of the outlet end of each automatic blanking device, and a push plate (519) used for separating and pushing the semi-finished products to the conveying mechanism (500, the induction plate (518) and the push plate (519) electric connection, when the semi-manufactured goods tip was conflicted induction plate (518), induction plate (518) feed back to push plate (519), push plate (519) start.

8. The production method of the environment-friendly production line for producing charcoal by using organic waste as claimed in any one of claims 1 to 7, comprising the steps of:

s1, operating a first fan (102), sucking materials in a storage bin (100) into a feeding pipe (101) and discharging the materials to a drying section (2);

s2, the second fan (201) and the heat recovery furnace (200) operate, the heat recovery furnace (200) and the feeding pipe (101) are extracted by the second fan (201), heat flow and materials are mixed, and the heat flow and the materials move towards the outlet end of the drying pipe assembly;

s3, the material descends spirally along the separator (300), and the dust removal section (7) is started to recover and filter the raised dust and the waste gas;

s4, stirring the materials in a packing auger (400), and then extruding and molding the materials in an extruder (401) to form a semi-finished product;

s5, adjusting the position of the induction plate (518);

s6, the semi-finished product moves towards an automatic blanking device on the conveying mechanism (500), the end part of the semi-finished product abuts against the induction plate (518), the push plate (519) pushes the semi-finished product, and the semi-finished product falls into the first conveying belt (502) in a segmented mode;

s7, collecting the semi-finished product, and filling the semi-finished product in a cracking furnace (600);

s8, igniting the cracking furnace (600) by using a second igniter (601) for 40-50 minutes, and then stopping heating;

s9, preserving the heat of the cracking furnace (600) for 6-12 hours, and recycling the gas in the cracking furnace (600) to the heat recovery furnace (200) through the exhaust pipe (602);

s10, opening the cracking furnace (600) and taking out the carbon finished product.