CN212298999U - Plasma burning and cracking furnace for treating drilling oil-based drilling cuttings - Google Patents
Plasma burning and cracking furnace for treating drilling oil-based drilling cuttings Download PDFInfo
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- CN212298999U CN212298999U CN202021428664.5U CN202021428664U CN212298999U CN 212298999 U CN212298999 U CN 212298999U CN 202021428664 U CN202021428664 U CN 202021428664U CN 212298999 U CN212298999 U CN 212298999U
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Abstract
The utility model aims to solve the problem of providing a plasma incineration cracking furnace for processing drilling oil-based drilling cuttings, which can continuously incinerate and crack the drilling oil-based drilling cuttings so as to realize cracking reduction and comprises a furnace body which is transversely distributed, wherein a feeding screw which can stir and propel materials is arranged in the furnace body along the length direction; a plurality of plasma generators are arranged above the feeding screw along the length direction of the feeding screw; the furnace body is characterized in that a feed inlet device and a discharge outlet device are further arranged on the wall of the furnace body, the feed inlet device is communicated with the feed end of the feeding screw, and the discharge outlet device is communicated with the discharge end of the feeding screw.
Description
Technical Field
The utility model belongs to the technical field of the useless processing technique of danger and specifically relates to a handle of drilling oil base drill chip, concretely relates to handle plasma incineration pyrolysis furnace of drilling oil base drill chip.
Background
In recent years, oil-based drilling fluid technology has gained more and more attention in China. The oil-based drilling fluid is prepared from oils such as diesel oil or white oil, water, organic clay, an emulsifier, a stabilizer, a filtrate reducer and other additives, and is suitable for drilling operations such as high-clay-content and easily collapsed oil and gas layers, high-temperature and high-pressure deep wells, large-slope directional wells, horizontal wells and the like. However, in the use process of the oil-based drilling fluid, a large amount of oil-containing drill cuttings are generated, wherein the oil-containing drill cuttings comprise complex components such as oil, clay, various chemical treatment agents, weighting materials, dirty oil, sewage, drill cuttings and the like, the oil-based drilling fluid has the characteristics of high oil content, a large amount of organic pollutants and the like, and has serious environmental pollution risks, and according to the 'dangerous waste name' newly issued by the country, the oil-based drill cuttings belong to the dangerous waste of HW08 and need to be thoroughly treated.
Among them, incineration is the most effective treatment method, especially plasma pyrolysis incineration, which is incomparable with the traditional incineration method in temperature and efficiency. The temperature of the plasma torch is far higher than that of other burning devices, the temperature can reach more than 3000 ℃ instantly, and harmful substance molecules in the oil-based drilling cuttings can be cracked rapidly at high temperature, so that the purposes of cracking treatment and reduction are achieved. The prior art (publication number CN 210463021U) discloses a plasma cracking apparatus capable of continuously incinerating and cracking hazardous waste and convenient to maintain, which comprises an incineration cracking furnace body, wherein the incineration cracking furnace body is formed by sequentially communicating a plurality of unit furnace bodies; at least one plasma generator is arranged in each unit furnace body, and a material propelling component which pushes materials along the direction of a furnace hearth of the incineration and cracking furnace body is arranged in each unit furnace body. However, the solid content of the drilling oil-based drilling cuttings is in the range of 20-50%, the oil content is high, so that the materials have fluidity, the materials cannot be fully stirred and normally pass through the incineration cracking furnace in the prior art, and a precedent that the oil-based drilling cuttings are treated by the plasma incineration device in the markets at home and abroad does not exist.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a handle plasma of well drilling oil base drill chip burns pyrolysis furnace, can be continuous burn pyrolysis oil base drill chip to realize the schizolysis minimizing.
The utility model discloses a realize through following technical scheme:
a plasma burning cracking furnace for processing drilling oil-based drilling cuttings comprises a furnace body which is transversely distributed, wherein a feeding screw which can stir and propel materials is arranged in the furnace body along the length direction;
a plurality of plasma generators are arranged above the feeding screw along the length direction of the feeding screw;
the furnace body is characterized in that a feed inlet device and a discharge outlet device are further arranged on the wall of the furnace body, the feed inlet device is communicated with the feed end of the feeding screw, and the discharge outlet device is communicated with the discharge end of the feeding screw.
Further, the feeding port device comprises a feeding hopper and a feeding conveying device, and the feeding hopper is arranged on the upper wall of the furnace body; the feeding conveying device is Z-shaped and is divided into a transverse feeding section, a vertical lifting section and a transverse discharging section from bottom to top in sequence, the feeding section is provided with a feeding hole, and the discharging section is provided with a discharging hole communicated with the feeding hopper; the feeding and conveying device comprises an outer shell and a conveying belt arranged in the outer shell, and a plurality of material separating plates which are transversely distributed are arranged on a bearing surface of the conveying belt along a conveying rotation direction.
Furthermore, transition rollers for supporting the conveying belt are arranged at the turning positions of the feeding section and the lifting section, and the discharging section and the lifting section in the outer shell; the included angle between the material separating plate and the conveying direction of the conveying belt is 70-85 degrees, and the gap between the material separating plate and the inner wall of the outer shell is 2-5 mm.
Furthermore, be equipped with a plurality of crisscross distribution on the lateral wall around the feeder hopper and keep off the cigarette PLASTIC LAMINATED, every keeps off the slope of cigarette PLASTIC LAMINATED downwards.
The furnace body is characterized by further comprising a feeding pipeline assembly, wherein the feeding pipeline assembly comprises a main feeding pipeline and a plurality of sub feeding pipelines, the plurality of sub feeding pipelines are communicated with the upper wall of the furnace body along the length direction of the furnace body, and the main feeding pipeline is communicated with the sub feeding pipelines through connecting pipes.
Further, the discharge port device comprises an ash spiral conveyor and a flash plate, the flash plate is installed at the discharge end of the feeding spiral in a matching mode, and a feed port of the ash spiral conveyor is communicated with the lower portion of the discharge end of the furnace body.
Furthermore, the feeding screw is rotatably arranged outside the front side wall and the rear side wall of the furnace body through bearing assemblies, the rotating speed of the feeding screw is 6-10 revolutions per minute, and the pushing speed is set to be 2-5 centimeters per minute.
Further, the inner side of the bottom of the furnace body is an arc-shaped surface matched with the feeding spiral.
Further, the power of the plasma generator is 3-5kw, and the arrangement density is 2-3 counts/square decimeter; the distance between the plasma generator and the material is maintained between 7 and 10 centimeters; the temperature in the furnace body is 600-1200 ℃.
Compared with the prior art, the utility model the beneficial effect who gains as follows:
1. after being pretreated, the oil-based drilling cuttings enter an inner cavity of a furnace body through a feed inlet device, the oil-based drilling cuttings are gradually pushed to the tail of the furnace while being uniformly stirred through spiral pushing and stirring of a feeding screw, and a plasma generator above the oil-based drilling cuttings generates high-temperature flame to incinerate and crack materials in the pushing process, wherein the incineration and cracking are a continuous process and are fully incinerated and reduced;
2. the feeding hole device comprises a feeding hopper and a feeding conveying device, the feeding conveying device is Z-shaped, so that the occupied space is greatly reduced, oil-based drilling cuttings with the solid content of more than 20-30% enter a feeding section from the feeding hole, a space for bearing materials is formed by matching the space between the material separating plates with the inner wall of the outer shell, and the materials are continuously lifted and conveyed into the feeding hopper along with the operation of the conveying belt;
3. the feeding pipeline assembly comprises a feeding main pipeline and a plurality of feeding branch pipelines, the oil-based drilling cuttings with the solid content of below 20-30% are pumped into the feeding main pipeline by a screw pump, the feeding branch pipelines are uniformly distributed at the upper part of the furnace body, and the materials uniformly enter the furnace body through the feeding branch pipelines;
4. the discharge port device comprises an ash spiral conveyor and a flash plate, ash generated by incineration and cracking falls into the ash spiral conveyor through the flash plate, so that ash is ensured to be always arranged in the ash spiral conveyor, sealing is realized, and smoke is prevented from leaking from the discharge port;
5. the utility model discloses convenient to use burns the schizolysis efficiently, and easy maintenance fills the blank that china utilized plasma to burn the technique processing oil base drill chip.
Drawings
FIG. 1 is a schematic perspective view of a plasma incineration and cracking furnace according to the present invention;
FIG. 2 is a schematic view of the internal structure of the plasma incineration and cracking furnace of the present invention;
FIG. 3 is a left side view of the plasma incineration and cracking furnace of the present invention;
FIG. 4 is a schematic structural view of the feeding and conveying device according to the present invention with the outer casing removed;
fig. 5 is a schematic view of the internal structure of the feeding section of the feeding and conveying device of the present invention;
FIG. 6 is a schematic structural view of the discharge hole device of the utility model;
in the figure: 1. furnace body, 2, pay-off spiral, 3, feed inlet device, 31, feeder hopper, 32, shell body, 33, conveyor belt, 35, transition roller, 36, separate flitch, 4, plasma generator, 5, the main pipeline of feeding, 6, feeding branch pipeline, 7, ash spiral feeder, 8, flash board.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present invention, it is to be understood that the terms "front", "back", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in figures 1-3, the utility model discloses a handle plasma of drilling oil base drill chip and burn pyrolysis furnace, it mainly includes furnace body 1, pay-off spiral 2, feed inlet device 3, feed pipe subassembly and discharge gate device. The furnace body 1 is transversely and lengthily distributed, and a high-temperature-resistant furnace chamber is arranged in the furnace body 1. The feeding screw 2 is rotatably arranged outside the front side wall and the rear side wall of the furnace body 1 through bearing assemblies, a driving motor is arranged at the front end of the feeding screw 2, the rotating speed of the feeding screw 2 is 6-10 revolutions per minute under the action of the driving motor, the materials can be pushed towards the tail of the furnace while being uniformly stirred, and the pushing speed of the feeding screw 2 is within the range of 2-5 centimeters per minute. The inner side of the bottom of the furnace body 1 is an arc-shaped surface matched with the feeding screw 2, so that the stirring and propelling effects of the feeding screw 2 are greatly improved.
The upper wall of the furnace body 1 is penetrated with a plurality of plasma generators 4 along the length direction, and the arrangement density is 2-3 counts/square decimeter. The plasma generator 4 is positioned right above the feeding screw 2, and the distance between the plasma generator 4 and the materials is maintained between 7 and 10 centimeters. The power of each plasma generator 4 is 3-5kw, so that the temperature in the furnace body 1 can reach 600-1200 ℃.
As shown in fig. 4-6, the feed inlet device 3 is communicated with the feed end of the feed screw 2, the feed inlet device 3 comprises a feed hopper 31 and a feed conveying device, and the feed hopper 31 is installed on the upper wall of the furnace body 1. The feeding conveying device is Z-shaped and sequentially divides a transverse feeding section, a vertical lifting section and a transverse discharging section from bottom to top, the feeding section is processed with a feeding hole, and the discharging section is processed with a communicating feeding hopper 31 at a discharging hole. Feeding conveyor includes shell body 32 and sets up conveyor belt 33 in the shell body 32, and conveyor belt 33's head end and tail end cooperate respectively to install the action wheel and follow the driving wheel, and the action wheel is connected with outside motor drive. Transition rollers 35 for supporting the conveying belt 33 are arranged at the turning positions of the feeding section and the lifting section, and the discharging section and the lifting section in the outer shell 32. The carrying surface of the conveyor belt 33 is provided with a plurality of material separating plates 36 which are distributed transversely along the length direction. The included angle between the material separating plate 36 and the conveying direction of the conveying belt 33 is 80 degrees, and the gap between the material separating plate 36 and the inner wall of the outer shell 32 is 3 mm. The design greatly reduces the occupied space, oil-based drilling cuttings with the solid content of more than 20-30% enter the feeding section from the feeding port, a space for bearing materials is formed by matching the space between the material separating plates 36 with the inner wall of the outer shell 32, and the materials are continuously lifted and fed into the feeding hopper 31 along with the operation of the conveying belt 33. Two smoke-blocking fireproof plates 37 which are distributed in a staggered mode are mounted on the front side wall and the rear side wall of the feed hopper 31, and each smoke-blocking fireproof plate 37 inclines downwards, so that flames and smoke can be effectively prevented from leaping out of the feed hopper 31.
The feeding pipeline assembly comprises a main feeding pipeline 5 and three branch feeding pipelines 6, the three branch feeding pipelines 6 are communicated with the upper wall of the furnace body 1 along the length direction of the furnace body 1, and the main feeding pipeline is communicated with the branch feeding pipelines 6 through connecting pipes respectively. The feeding branch pipeline 6 is provided with an adjusting valve, and the flow of the feeding branch pipeline 6 is ensured to be equal by adjusting the opening size of the valve, so that the materials are uniformly distributed in the furnace body 1. When the solid content of the oil-based drilling cuttings is below 20-30%, the materials can be pumped into the main feeding pipeline 5 by a screw pump, and the materials uniformly enter the furnace body 1 through the three feeding branch pipelines 6. The discharge port device comprises an ash spiral conveyor 7 and a flash plate 8, the flash plate 8 is installed at the discharge end of the feeding spiral 2 in a matching mode, and a feed port of the ash spiral conveyor 7 is communicated with the lower portion of the discharge end of the furnace body 1. The ash generated by incineration and cracking falls into the ash spiral conveyor 7 through the overflow plate 8, so that the ash is always kept in the ash spiral conveyor 7, sealing is realized, and smoke is prevented from leaking from the discharge hole.
The specific working process of the plasma burning cracking furnace for treating the drilling oil-based drilling cuttings is as follows:
1. when the solid content of the oil-based drilling cuttings is below 20-30%, pumping the materials into a main feeding pipeline by using a screw pump, and uniformly feeding the materials into a furnace body through three feeding branch pipelines;
when the solid content of the oil-based drilling cuttings is over 20-30%, materials are fed from a feeding hole of the feeding conveying device, a space for bearing the materials is formed by matching the space between the material separating plates with the inner wall of the outer shell, and the materials are continuously lifted and conveyed into a feeding hopper along with the operation of a conveying belt and finally enter the furnace body;
2. after the oil-based drilling cuttings enter the furnace, the oil-based drilling cuttings are stirred uniformly and are pushed towards the tail of the furnace gradually through spiral stirring transversely arranged in the furnace, the rotating speed of the spiral stirring is set to be 6-10 rpm, and the pushing speed is set to be 2-5 cm/min. Plasma generators with power of 3-5 thousand are uniformly distributed on the upper wall in the furnace to incinerate and crack the materials;
3. the oil-based drilling cuttings are fully burnt to reduce the quantity of the drilling cuttings to form ash residues, the ash residues are conveyed to the furnace tail under the pushing of spiral stirring, a discharge port is formed in the bottom of the furnace tail, the ash residues overflow through a flash plate and fall into an ash residue spiral conveyor through the discharge port, and the ash residues are guaranteed to be always in the ash residue spiral conveyor, so that sealing is realized, and smoke is prevented from leaking from the discharge port. The ash spiral conveyor is provided with a variable frequency motor, the discharge amount of the ash spiral conveyor is adjusted to be equal to the blanking amount in the furnace body, the ash spiral conveyor is always in a material filling state, and the ash spiral conveyor is prevented from leaking smoke.
It is worth noting that 3-5 smoke exhaust channels and 1 explosion-proof door are evenly distributed on the upper part of the furnace body, so as to ensure smooth smoke exhaust and safe incineration. The flue gas generated by the plasma incineration cracking furnace enters a plasma secondary combustion chamber, the temperature of the secondary combustion chamber is controlled to be 900-fold and 1100 ℃, the residence time is more than 3s, so that harmful ingredients such as petroleum hydrocarbons, dioxin and the like in the flue gas are completely eliminated, and the flue gas is treated by a flue gas integrated treatment device and then deacidified, dedusted and deodorized to reach the standard and then discharged. Since this is conventional, it will not be described in detail here.
Claims (9)
1. A plasma burning cracking furnace for processing drilling oil-based drilling cuttings is characterized by comprising a furnace body which is transversely distributed, wherein a feeding screw capable of stirring and propelling materials is arranged in the furnace body along the length direction;
a plurality of plasma generators are arranged above the feeding screw along the length direction of the feeding screw;
the furnace body is characterized in that a feed inlet device and a discharge outlet device are further arranged on the wall of the furnace body, the feed inlet device is communicated with the feed end of the feeding screw, and the discharge outlet device is communicated with the discharge end of the feeding screw.
2. The plasma incineration and cracking furnace of claim 1, wherein the feed inlet device comprises a feed hopper and a feed conveying device, the feed hopper is mounted on an upper wall of the furnace body; the feeding conveying device is Z-shaped and is divided into a transverse feeding section, a vertical lifting section and a transverse discharging section from bottom to top in sequence, the feeding section is provided with a feeding hole, and the discharging section is provided with a discharging hole communicated with the feeding hopper; the feeding and conveying device comprises an outer shell and a conveying belt arranged in the outer shell, and a plurality of material separating plates which are transversely distributed are arranged on a bearing surface of the conveying belt along a conveying rotation direction.
3. The plasma incineration and cracking furnace of claim 2, wherein transition rollers for supporting the conveying belt are arranged at the turning positions of the feeding section and the lifting section, and the discharging section and the lifting section in the outer shell; the included angle between the material separating plate and the conveying direction of the conveying belt is 70-85 degrees, and the gap between the material separating plate and the inner wall of the outer shell is 2-5 mm.
4. The plasma incineration and cracking furnace of claim 3, wherein the front and rear side walls of the feed hopper are provided with a plurality of smoke and fire blocking plates which are distributed in a staggered manner, and each smoke and fire blocking plate is inclined downwards.
5. The plasma incineration and cracking furnace of claim 1, further comprising a feeding pipe assembly, wherein the feeding pipe assembly comprises a feeding main pipe and a plurality of feeding branch pipes, the feeding branch pipes are communicated with the upper wall of the furnace body along the length direction of the furnace body, and the feeding main pipe is communicated with the feeding branch pipes through connecting pipes.
6. The plasma incineration pyrolysis furnace of claim 1, wherein the discharge port device comprises an ash spiral conveyor and a flash plate, the flash plate is fittingly installed at the discharge end of the feeding spiral, and the feed port of the ash spiral conveyor is communicated with the lower part of the discharge end of the furnace body.
7. The plasma incineration and cracking furnace of claim 1, wherein the feeding screw is rotatably mounted outside the front and rear side walls of the furnace body through a bearing assembly, the rotating speed of the feeding screw is 6-10 rpm, and the pushing speed of the feeding screw is set to 2-5 cm/min.
8. The plasma incineration and cracking furnace of claim 1, wherein the inner side of the bottom of the furnace body is an arc-shaped surface matched with the feeding spiral.
9. The plasma incineration pyrolysis furnace of any one of claims 1 to 8, wherein the plasma generator has a power of 3 to 5kw and an arrangement density of 2 to 3 counts/sq dm; the distance between the plasma generator and the material is maintained between 7 and 10 centimeters; the temperature in the furnace body is 600-1200 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021428664.5U CN212298999U (en) | 2020-07-20 | 2020-07-20 | Plasma burning and cracking furnace for treating drilling oil-based drilling cuttings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021428664.5U CN212298999U (en) | 2020-07-20 | 2020-07-20 | Plasma burning and cracking furnace for treating drilling oil-based drilling cuttings |
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| CN212298999U true CN212298999U (en) | 2021-01-05 |
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| CN202021428664.5U Active CN212298999U (en) | 2020-07-20 | 2020-07-20 | Plasma burning and cracking furnace for treating drilling oil-based drilling cuttings |
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