Pyrolysis equipment

Abstract

The utility model provides pyrolysis equipment, which belongs to the technical field of solid waste recovery and treatment and comprises a pyrolysis kettle, a drying kettle and a heating component, the pyrolysis kettle comprises a first barrel, a first spiral shaft and a first spiral blade; the first spiral shaft and the first spiral blade are of a hollow structure and communicate with each other to form a first inner heating channel. The drying kettle comprises a second barrel, a second spiral shaft and a second spiral blade; the second spiral shaft and the second spiral blade are of a hollow structure and communicate with each other to form a second inner heating channel. The heating assembly comprises a hot blast stove, a first heating jacket and a second heating jacket; and the first heating jacket, the second heating jacket, the first inner heating channel and the second inner heating channel are connected in parallel and are connected with the hot blast stove. The pyrolysis reaction kettle disclosed by the utility model solves the technical problem that hydrocarbon cannot be fully released when the existing pyrolysis reaction kettle is used for treating waste tires, and has the characteristics that the hydrocarbon can be fully released, and the light transmittance of toluene in crude carbon black is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to solid waste recycling processing technical field especially relates to a pyrolysis equipment. BACKGROUND

[0002] Waste tires are called "black pollution" in the industry, and its recycling and processing technology has been a worldwide problem, and also an environmental protection problem. By pyrolysis, organic matter is heated in an anaerobic or hypoxic state, and the chemical bonds of compounds are broken by heat energy, converting large molecular weight organic matter into small molecular weight combustible gas, liquid fuel and coke. This processing method not only realizes the treatment of waste tires and relieves environmental pressure, but also realizes recycling and utilization of the obtained products after further processing, which has important social significance.

[0003] However, the existing pyrolysis reactor often cannot achieve sufficient release of hydrocarbons when treating waste tires, thereby affecting the toluene light transmittance in crude carbon black. UTILITY MODEL CONTENT

[0004] The details of one or more embodiments of the utility model are presented in the following drawings and description, so that other features, purposes and advantages of the application are more concise and easy to understand.

[0005] The utility model provides a pyrolysis equipment, solve the existing pyrolysis reactor often cannot achieve sufficient release of hydrocarbons when treating waste tires, thereby affecting the toluene light transmittance in crude carbon black technical problem, with can realize the characteristics of sufficient release of hydrocarbons, improve the toluene light transmittance in crude carbon black.

[0006] The utility model discloses a pyrolysis equipment, include: pyrolysis kettle, including first cylinder, the first spiral shaft of being set in the first cylinder in, with the first spiral blade of winding in the first spiral shaft outside, first cylinder has first feed inlet and first discharge port on, first spiral shaft and first spiral blade are hollow structure and both communicate and form first internal heating channel, drying kettle, including second cylinder, the second spiral shaft of being set in the second cylinder in, with the second spiral blade of winding in the second spiral shaft outside, second cylinder has second feed inlet and second discharge port on, and second feed inlet is linked with first discharge port, second spiral shaft and second spiral blade are hollow structure and both communicate and form second internal heating channel, heating subassembly, including hot blast furnace, the first heating jacket of being set in the first cylinder outside, with the second heating jacket of being set in the second cylinder outside, first heating jacket, second heating jacket, first internal heating channel and second internal heating channel are parallel and with hot blast furnace is linked.

[0007] Further, the first heating jacket is connected with the high-temperature flue gas outlet of the hot blast stove through a plurality of groups of air inlet pipes, and the first heating jacket is connected with the high-temperature flue gas inlet of the hot blast stove through a plurality of groups of air outlet pipes.

[0008] In some embodiments, control valves are arranged on the pipes connecting the first heating jacket with the hot blast stove and on the pipes connecting the second heating jacket with the hot blast stove.

[0009] Further, the first cylinder body is provided with a first high-temperature oil vapor outlet, and the second cylinder body is provided with a second high-temperature oil vapor outlet.

[0010] In some embodiments, the pyrolysis device further comprises a condenser, the first cylinder body is connected with the condenser through the first high-temperature oil vapor outlet, and the second cylinder body is connected with the condenser through the second high-temperature oil vapor outlet.

[0011] Further, the condenser comprises a first-stage condenser and a second-stage condenser connected with the first-stage condenser.

[0012] In some embodiments, the pyrolysis device further comprises a daily oil storage tank connected with the bottom of the condenser.

[0013] In some embodiments, the pyrolysis device further comprises a feed storage bin connected with the pyrolysis kettle through the first feed inlet.

[0014] In some embodiments, the pyrolysis device further comprises a slag discharging device connected with the drying kettle through the second discharge outlet.

[0015] Further, the slag discharging device comprises a self-sealing slag discharging screw and a water-cooled slag discharging screw connected with each other, and the self-sealing slag discharging screw is connected with the drying kettle through the second discharge outlet.

[0016] Compared with the prior art, the pyrolysis device has the following beneficial effects:

[0017] The drying kettle is arranged behind the pyrolysis kettle, so that the coarse carbon black that has completed part of the pyrolysis in the pyrolysis kettle enters the drying kettle, and the drying kettle is continuously heated, so that the hydrocarbons contained therein are released to a greater extent, thereby improving the toluene transmittance of the coarse carbon black. Further, the pyrolysis device is provided with the heating mode of double heating inside and outside, the first heating jacket, the second heating jacket, the first inner heating channel and the second inner heating channel arranged in parallel, which is beneficial to the dispersion of the high-temperature flue gas, makes the temperature of the pyrolysis device more balanced and the heat more sufficient, and improves the reaction rate and the sufficiency of the pyrolysis of the waste tires. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the pyrolysis equipment provided in an embodiment of the present utility model;

[0020] Figure 2 This is a partial structural schematic diagram of the pyrolysis equipment provided in an embodiment of the present utility model;

[0021] Figure 3 This is another structural schematic diagram of the pyrolysis equipment provided in an embodiment of the present utility model;

[0022] In the above figures: 1. Pyrolysis kettle; 101. First cylinder; 102. First spiral shaft; 103. First spiral blade; 104. First feed inlet; 105. First discharge outlet; 106. First high-temperature oil vapor outlet; 2. Drying kettle; 201. Second cylinder; 202. Second spiral shaft; 203. Second spiral blade; 204. Second feed inlet; 205. Second discharge outlet; 206. Second high-temperature oil vapor outlet; 301. Hot air furnace; 302. First heating jacket; 303. Second heating jacket; 401. First-stage condenser; 402. Second-stage condenser; 5. Daily oil storage tank; 6. Feed buffer silo; 701. Self-sealing slag discharge spiral conveyor; 702. Water-cooled slag discharge spiral conveyor. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments provided by this utility model without inventive effort are within the scope of protection of this utility model.

[0024] This utility model embodiment provides a pyrolysis device. Figure 1 This is a schematic diagram of the structure of a pyrolysis apparatus according to an embodiment of the present invention. (Reference) Figure 1As shown, the device at least comprises: a pyrolysis kettle 1, including a first cylinder body 101, a first spiral shaft 102 sleeved in the first cylinder body 101, and a first spiral blade 103 wound outside the first spiral shaft 102; the first cylinder body 101 is provided with a first feeding port 104 and a first discharging port 105; the first spiral shaft 102 and the first spiral blade 103 are both hollow structures and are communicated to form a first inner heating channel; a drying kettle 2, including a second cylinder body 201, a second spiral shaft 202 sleeved in the second cylinder body 201, and a second spiral blade 203 wound outside the second spiral shaft 202; the second cylinder body 201 is provided with a second feeding port 204 and a second discharging port 205, and the second feeding port 204 is connected with the first discharging port 105; the second spiral shaft 202 and the second spiral blade 203 are both hollow structures and are communicated to form a second inner heating channel; a heating assembly, including a hot blast furnace 301, a first heating jacket 302 sleeved outside the first cylinder body 101, and a second heating jacket 303 sleeved outside the second cylinder body 201; the first heating jacket 302, the second heating jacket 303, the first inner heating channel, and the second inner heating channel are connected with the hot blast furnace 301 in parallel.

[0025] By setting the drying kettle 2 after the pyrolysis kettle 1, the pyrolysis kettle 1 has 90% of the pyrolysis of the crude carbon black, and the drying kettle 2 continues to be heated, so that the hydrocarbons contained therein are released to 100%, thereby improving the toluene transmittance of the crude carbon black; by setting the inner and outer double heating mode in the pyrolysis kettle 1 and the drying kettle 2, the reaction rate and the reaction sufficiency of the pyrolysis of the waste tires are improved.

[0026] The first heating jacket 302 provided outside the first cylinder body 101 of the pyrolysis kettle 1 heats the pyrolysis kettle 1 from the outside of the pyrolysis kettle 1, the first spiral shaft 102 and the first spiral blade 103 of the pyrolysis kettle 1 are both hollow structures and are communicated to form a first inner heating channel and are connected with a hot air blower, and the pyrolysis kettle 1 is heated from the inside of the pyrolysis kettle 1, realizing the inner and outer double heating mode of the pyrolysis kettle 1. The second heating jacket 303 provided outside the second cylinder body 201 of the drying kettle 2 heats the drying kettle 2 from the outside of the drying kettle 2, the second spiral shaft 202 and the second spiral blade 203 of the drying kettle 2 are both hollow structures and are communicated to form a second inner heating channel and are connected with a hot air blower, and the drying kettle 2 is heated from the inside of the drying kettle 2, realizing the inner and outer double heating mode of the drying kettle 2. This setting can make the material warm up faster, which is conducive to the occurrence of pyrolysis reaction; at the same time, the material is heated more uniformly, which improves the reaction efficiency; and it can also ensure sufficient heat supply in the pyrolysis reaction, which is conducive to the complete decomposition of the material and the improvement of the toluene transmittance of the crude carbon black.

[0027] The utility model discloses a pyrolysis kettle and drying kettle are provided with spiral shaft and spiral blade, and the material is rotated and pushed, and the material is rolled in the circumferential direction, thereby good mixing effect is played, the oily material of the reaction process is prevented from being connected and balled due to cracking and further reaction is affected, and the reaction efficiency is improved.

[0028] The utility model discloses a spiral shaft and spiral blade are set up to the material transportation, and the stability of equipment operation is improved.

[0029] As Figure 2 The first heating jacket 302 is connected with the high-temperature flue gas outlet of the hot blast furnace 301 through a plurality of gas inlet pipes, and is connected with the high-temperature flue gas inlet of the hot blast furnace 301 through a plurality of gas outlet pipes. A plurality of gas inlet pipes are arranged on the first heating jacket 302, so that the high-temperature flue gas enters the first heating jacket 302 through a plurality of points, and the heating is more uniform, and the temperature in the first heating jacket 302 is more uniform. On the other hand, the plurality of gas inlet pipes and gas outlet pipes arranged on the first heating jacket 302 make the flow of high-temperature flue gas more smooth, and ensure the stability of heat.

[0030] In some embodiments, four groups of uniformly distributed high-temperature flue gas inlet pipes and control valves are arranged on the lower part of the first heating jacket 302, and are connected with the high-temperature flue gas outlet of the hot blast furnace 301. Four groups of uniformly distributed high-temperature flue gas outlet pipes and control valves are vertically arranged on the upper part of the first heating jacket 302, and the high-temperature flue gas after heating is discharged.

[0031] In some embodiments, control valves are arranged on the pipes connecting the first heating jacket 302 and the hot blast furnace 301, and on the pipes connecting the second heating jacket 303 and the hot blast furnace 301.

[0032] Further, the first cylinder 101 has a first high-temperature oil vapor outlet 106, and the second cylinder 201 has a second high-temperature oil vapor outlet 206. The high-temperature oil vapor generated during the pyrolysis reaction is discharged through the outlet.

[0033] In some embodiments, a group of high-temperature oil vapor outlets are vertically arranged on the right side of the first cylinder 101 of the pyrolysis kettle 1, and three groups of high-temperature oil vapor outlets are vertically arranged on the right side of the second cylinder 201 of the drying kettle 2.

[0034] As Figure 3As shown, the pyrolysis device further comprises a condenser, the first cylinder 101 is connected with the condenser through the first high-temperature oil vapor outlet 106, and the second cylinder 201 is connected with the condenser through the second high-temperature oil vapor outlet 206. The condenser condenses and collects the high-temperature oil vapor generated in the pyrolysis reaction process.

[0035] Further, the condenser comprises a first condenser 401 and a second condenser 402 connected with the first condenser 401. Through the arrangement of the two-stage condenser, the high-temperature oil vapor is sufficiently condensed.

[0036] In some embodiments, the pyrolysis device further comprises a daily oil storage tank 5 connected with the bottom of the condenser. The daily oil storage tank collects and stores the high-temperature oil vapor condensed by the condenser.

[0037] In some embodiments, the pyrolysis device further comprises a feed buffer bin 6 connected with the pyrolysis kettle 1 through the first feed inlet 104.

[0038] In some embodiments, the pyrolysis device further comprises a slag discharge device connected with the drying kettle 2 through the second discharge outlet 205. The carbon black reacted and dried in the drying kettle 2 is transported to the next process through the slag discharge device.

[0039] Further, the slag discharge device comprises a self-sealing slag discharge screw 701 and a water-cooled slag discharge screw 702 connected with each other, and the self-sealing slag discharge screw 701 is connected with the drying kettle 2 through the second discharge outlet 205. The water-cooled slag discharge screw 703 transports and cools the carbon black after the pyrolysis reaction.

[0040] In some embodiments, the self-sealing slag discharge screw 701 discharge outlet and the water-cooled slag discharge screw 702 feed inlet are connected; the water-cooled slag discharge screw 702 discharge outlet is provided with a sealing discharge valve. The carbon black discharged from the water-cooled slag discharge screw 702 discharge outlet is transported to the carbon black deep processing workshop for next step processing.

[0041] In some embodiments, a gas-liquid separator is vertically arranged on the right side of the daily oil storage tank 5 and connected with the gas inlet of a system negative pressure vacuum pump; the gas outlet of the system negative pressure vacuum pump is connected with a combustion machine of a heating hot blast furnace 301 to provide fuel for system heating. The combustible gas generated in the pyrolysis reaction is sent into the hot blast furnace 301 as fuel, which not only saves fuel cost, but also is more environmentally friendly.

[0042] In some embodiments, the pyrolysis kettle 1 driving device is arranged at the left spiral cylinder end, and a chain is used for transmission.

[0043] In some embodiments, the ventilation hole between the first helical shaft 102 and the first helical blade 103 is a ventilation hole with a diameter of 22 mm, and is distributed along the direction of rotation of the helix; the ventilation hole between the second helical shaft 202 and the second helical blade 203 is a ventilation hole with a diameter of 22 mm, and is distributed along the direction of rotation of the helix.

[0044] In some embodiments, the flue gas outlet rotary joint of the first helical shaft 102 and the first helical blade 103 in the pyrolysis kettle 1 is arranged at the left end of the first helical shaft 102, and is connected with the flue gas return main pipeline; the flue gas outlet rotary joint of the second helical shaft 202 and the second helical blade 203 of the drying kettle 2 is arranged at the left end of the second helical shaft 202, and is connected with the flue gas return main pipeline.

[0045] In some embodiments, the first discharge port 105 of the pyrolysis kettle 1 is arranged on the right side of the first cylinder body 101, and the first discharge port 105 is provided with a maintenance gate valve and a sealing discharge valve, and is connected with the second feed port 204 of the drying kettle 2.

[0046] In some embodiments, the second cylinder body 201 of the drying kettle 2 is vertically provided with a second feed port 204 on the left side, which is connected with the first discharge port 105 of the pyrolysis kettle 1.

[0047] In some embodiments, the hot blast furnace 301 is provided with a high-temperature flue gas outlet on the right side, and a high-temperature circulating flue gas inlet is vertically arranged on the left side of the top, and the high-temperature flue gas is circulated by a circulating pump.

[0048] In some embodiments, the material reaction area in the pyrolysis kettle 1 and the drying kettle 2 is mainly composed of a rotating shaft and a helical blade welded on the shaft. This kind of arrangement structure is simple, without complex transmission components and vulnerable parts, not only relatively easy to manufacture, but also relatively simple to maintain and repair, reducing the operation cost and maintenance difficulty of the equipment.

[0049] The working process of the above-mentioned pyrolysis equipment is as follows:

[0050] After the pretreatment and crushing of waste rubber and plastic solid materials, the materials are transported to the feed buffer bin through the conveying device, and then enter the pyrolysis kettle 1 through the feed stirring screw conveyor at the bottom of the feed buffer bin. The feed port of the pyrolysis kettle 1 is vertically arranged on the left side of the upper part of the first cylinder body 101, and is connected with the feed port of the feed stirring screw conveyor. The entering materials undergo pyrolysis reaction in the pyrolysis kettle 1, and the pyrolysis kettle 1 uses high-temperature flue gas heating to heat the materials; at the same time, the materials entering the pyrolysis kettle 1 are transported to the right side through the first helical blade 103 arranged on the first helical shaft 102 under the action of the driving device, and 90% of the pyrolysis materials are transported to the right side through the first helical blade 103 arranged on the first helical shaft 102 under the action of the driving device, and then are sent into the drying kettle 2 through the sealing discharge valve at the discharge port to continue the reaction and drying. The carbon black after the reaction enters the slag discharging device for transportation and cooling, and then enters other processes.

[0051] The high-temperature oil vapor generated in the pyrolysis reaction enters the condenser through the high-temperature oil vapor outlet on the pyrolysis kettle 1 and the drying kettle 2, is condensed in the condenser, and the condensed liquid part enters the daily oil storage tank 5 for collection and storage; the gas part that cannot be condensed enters the hot blast furnace 301 as fuel. The high-temperature flue gas generated by the combustion of the hot blast furnace 301 provides heat for the pyrolysis system.

[0052] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as within the scope of the present disclosure.

[0053] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A pyrolysis apparatus, characterized by, The pyrolysis device comprises: a pyrolysis kettle, including a first cylinder, a first spiral shaft sleeved in the first cylinder, and a first spiral blade wound outside the first spiral shaft; the first cylinder is provided with a first feeding port and a first discharging port; the first spiral shaft and the first spiral blade are both hollow structures and are in communication to form a first internal heating channel; a drying kettle, including a second cylinder, a second spiral shaft sleeved in the second cylinder, and a second spiral blade wound outside the second spiral shaft; the second cylinder is provided with a second feeding port and a second discharging port, and the second feeding port is connected with the first discharging port; the second spiral shaft and the second spiral blade are both hollow structures and are in communication to form a second internal heating channel; a heating assembly, including a hot blast furnace, a first heating jacket sleeved outside the first cylinder, and a second heating jacket sleeved outside the second cylinder; the first heating jacket, the second heating jacket, the first internal heating channel, and the second internal heating channel are connected with the hot blast furnace in parallel.

2. The pyrolysis apparatus of claim 1, wherein, The first heating jacket is connected with a high-temperature flue gas outlet of the hot blast furnace through a plurality of groups of gas inlet pipelines, and the first heating jacket is connected with a high-temperature flue gas inlet of the hot blast furnace through a plurality of groups of gas outlet pipelines.

3. The pyrolysis apparatus of claim 1, wherein, Control valves are arranged on the pipelines connecting the first heating jacket and the hot blast furnace, and on the pipelines connecting the second heating jacket and the hot blast furnace.

4. The pyrolysis apparatus of claim 1, wherein, The first cylinder is provided with a first high-temperature oil vapor outlet, and the second cylinder is provided with a second high-temperature oil vapor outlet.

5. The pyrolysis apparatus of claim 4, wherein, The pyrolysis device further comprises a condenser, and the first cylinder is connected with the condenser through the first high-temperature oil vapor outlet, and the second cylinder is connected with the condenser through the second high-temperature oil vapor outlet.

6. The pyrolysis apparatus of claim 5, wherein, The condenser comprises a primary condenser and a secondary condenser connected with the primary condenser.

7. The pyrolysis apparatus of claim 5, wherein, The pyrolysis device further comprises a daily oil storage tank connected with the bottom of the condenser.

8. The pyrolysis apparatus of claim 1, wherein, The pyrolysis device further comprises a feeding buffer bin connected with the pyrolysis kettle through the first feeding port.

9. The pyrolysis apparatus of claim 1, wherein, The pyrolysis device further comprises a slag discharging device connected with the drying kettle through the second discharging port.

10. The pyrolysis apparatus of claim 9, wherein, The slag discharging device comprises a self-sealing slag discharging screw and a water-cooled slag discharging screw connected with each other, and the self-sealing slag discharging screw is connected with the drying kettle through the second discharging port.

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