CN215480723U - Oil base drill chip and red mud waste coprocessing system - Google Patents
Oil base drill chip and red mud waste coprocessing system Download PDFInfo
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Abstract
The utility model relates to the technical field of waste treatment, and provides a synergistic treatment system for oil-based drill cuttings and red mud waste, which mainly comprises: the device comprises a mixing device, a forming device, a pyrolysis device, a coke quenching device and a screening device which are connected in sequence, wherein the mixing device is used for obtaining a mixture of the oil-based drilling cuttings and the red mud; the forming device is used for forming the mixture into pyrolysis raw materials; the pyrolysis device is used for pyrolyzing the pyrolysis raw material to generate a pyrolysis solid-phase product; the coke quenching device is used for cooling the pyrolysis solid-phase product; the screening device is used for screening the cooled pyrolysis solid-phase product to obtain a granular pyrolysis solid-phase product, and the pyrolysis solid-phase product is a red mud drilling cutting-based iron-carbon material. The utility model realizes the cooperative treatment of the oil-based drilling cuttings and the red mud, achieves the aim of treating wastes with processes of wastes against one another, and has the characteristics of simple and convenient operation, stability, reliability, energy conservation, environmental protection and the like.
Description
Technical Field
The utility model relates to the technical field of waste treatment, in particular to a synergistic treatment system for oil-based drilling cuttings and red mud waste.
Background
At present, oil-based mud is used for drilling in the process of exploiting shale gas, a drill bit cuts rocks in a stratum to generate a large amount of drill cuttings, so that oil-based drill cuttings are formed, the oil-based drill cuttings contain pollutants such as petroleum hydrocarbons, heavy metals and organic matters, and are directly discharged without being processed, so that the surrounding ecological environment is seriously damaged, and the discharge standard of many regions in the world is stipulated, so that the Total Petroleum Hydrocarbons (TPH) in the oil-based drill cuttings can be discharged only when the mass percentage of the Total Petroleum Hydrocarbons (TPH) in the oil-based drill cuttings is lower than 1%; the red mud is the waste which has the largest production amount and the most serious pollution in the production process of the alumina, currently, 1 ton of alumina is produced, and nearly 2 tons of red mud are produced, and the annual discharge amount of the national red mud is up to more than 700 million tons. The red mud stacking not only occupies a large amount of land, but also can cause land alkalization, pollute underground water and harm the health of people. Therefore, there is a need for a treatment system that can effectively treat the above-mentioned waste.
SUMMERY OF THE UTILITY MODEL
The utility model provides a synergistic treatment system for oil-based drilling cuttings and red mud wastes, which realizes synergistic treatment of the oil-based drilling cuttings and the red mud wastes to achieve the purpose of treating wastes with processes of wastes against one another, and has the characteristics of simplicity and convenience in operation, stability, reliability, energy conservation, environmental friendliness and the like.
The utility model provides a synergistic treatment system for oil-based drill cuttings and red mud wastes, which comprises: the mixing device is used for obtaining a mixture of the oil-based drilling cuttings and the red mud; the forming device is connected with the mixing device and is used for forming the mixture into a pyrolysis raw material; the feeding port of the pyrolysis device is connected with the forming device and is used for pyrolyzing the pyrolysis raw material to generate a pyrolysis solid-phase product; a feeding port of the coke quenching device is connected with a discharging port of the pyrolysis device and is used for cooling the pyrolysis solid-phase product; and the screening device is connected with a discharge port of the coke quenching device and is used for screening the cooled pyrolysis solid-phase product to obtain a granular pyrolysis solid-phase product, and the pyrolysis solid-phase product is a red mud drill chip-based iron-carbon material.
The oil-based drilling cuttings and red mud waste co-processing system further comprises a pyrolysis oil gas processing unit, wherein the pyrolysis oil gas processing unit is connected with the pyrolysis device and is used for separating pyrolysis oil gas generated by pyrolysis and returning pyrolysis gas and heavy oil obtained by processing to the pyrolysis device.
According to the oil-based drilling cuttings and red mud waste co-processing system provided by the utility model, the pyrolysis oil gas processing unit comprises: the inlet of the oil-gas condensation and separation device is connected with a pyrolysis oil-gas outlet of the pyrolysis device, and a pyrolysis gas outlet of the oil-gas condensation and separation device is connected with a fuel inlet of the pyrolysis device; the inlet of the oil-water separation device is connected with the pyrolysis oil-water outlet of the oil-gas condensation separation device; the inlet of the residual oil separation device is connected with the pyrolysis oil outlet of the oil-water separation device, and the heavy oil outlet of the residual oil separation device is connected with the fuel inlet of the pyrolysis device.
According to the oil-based drilling cuttings and red mud waste co-processing system provided by the utility model, a heat exchange pipeline is arranged in the coke quenching device and used for introducing normal-temperature combustion-supporting gas, the heat exchange pipeline is externally connected with a first heat exchanger, and the first heat exchanger is respectively connected with a fuel inlet and a flue gas outlet of the pyrolysis device.
The oil-based drilling cuttings and red mud waste co-processing system further comprises a second heat exchanger, and the second heat exchanger is connected with the first heat exchanger.
The oil-based drilling cutting and red mud waste co-processing system further comprises a dust remover, a desulfurization and denitrification device and a smoke exhaust device which are sequentially connected, wherein the dust remover is connected with the second heat exchanger.
The oil-based drilling cutting and red mud waste co-processing system further comprises an oil-based drilling cutting pretreatment device and a red mud crushing and preheating device, wherein the oil-based drilling cutting pretreatment device and the red mud crushing and preheating device are respectively connected with the mixing device.
According to the oil-based drilling cuttings and red mud waste co-processing system provided by the utility model, the pyrolysis device is a settling furnace reactor.
According to the oil-based drilling cutting and red mud waste co-processing system provided by the utility model, a mixture of the oil-based drilling cutting and the red mud is obtained through the mixing device; forming the mixture into a pyrolysis raw material by a forming device; pyrolyzing the pyrolysis raw material by a pyrolysis device to generate a pyrolysis solid-phase product; cooling the pyrolysis solid-phase product by a coke quenching device; the cooled pyrolysis solid-phase product is screened by the screening device to obtain a granular pyrolysis solid-phase product which can be used as an adsorbent for wastewater treatment and resource utilization of the pyrolysis solid-phase product, wherein the pyrolysis solid-phase product is a red mud drilling cutting-based iron-carbon material and has high specific surface area and high Cr (VI) selectivity. Therefore, the oil-based drilling cuttings and the red mud are subjected to synergistic treatment, the obtained product is an adsorbing material with a useful value, no pollutant is discharged, the purpose of treating wastes with processes of wastes against one another is achieved, and the oil-based drilling cuttings and red mud combined treatment method has the characteristics of simplicity and convenience in operation, stability, reliability, energy conservation, environmental friendliness and the like.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the related art, the drawings needed to be used in the description of the embodiments or the related art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a block diagram of the structure of a co-processing system for oil-based drill cuttings and red mud waste provided by the utility model;
FIG. 2 is a schematic flow chart of the oil-based drilling cuttings and red mud waste co-processing method provided by the utility model;
reference numerals:
1: a mixing device; 2: a molding device; 3: a pyrolysis device; 4: a coke quenching device; 5: a screening device; 6: an oil-gas condensation separation device; 7: an oil-water separation device; 8: a residual oil separation device; 9: a heat exchange conduit; 10: a first heat exchanger; 11: a second heat exchanger; 12: a dust remover; 13: a desulfurization and denitrification device; 14: a fume extractor; 15: an oil-based drilling cutting pretreatment device; 16: red mud crushing and preheating device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the embodiments of the present invention, it should be noted that the terms "top", "bottom", "inside", "outside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The oil-based drill cuttings and red mud waste co-processing system of the present invention is described below with reference to fig. 1.
According to an embodiment of the present invention, as shown in fig. 1, the oil-based drill cuttings and red mud waste co-processing system provided by the present invention mainly includes: the device comprises a mixing device 1, a forming device 2, a pyrolysis device 3, a coke quenching device 4 and a screening device 5 which are connected in sequence. Wherein, the mixing device 1 is filled with two wastes of the oil-based drilling cuttings and the red mud and is mixed to obtain a mixture of the oil-based drilling cuttings and the red mud, and the mixture is an unformed pyrolysis raw material; a feeding port of the forming device 2 is connected with a discharging port of the mixing device 1, and unformed pyrolysis raw materials are fed into the forming device 2 to be treated to form formed pyrolysis raw materials; a feeding port of the pyrolysis device 3 is connected with a discharging port of the forming device 2, and the formed pyrolysis raw material is introduced into the pyrolysis device 3 for pyrolysis activation to generate a pyrolysis solid-phase product; a feeding port of the coke quenching device 4 is connected with a discharging port of the pyrolysis device 3, and the pyrolysis solid-phase product is introduced into the coke quenching device 4 for cooling; and a feeding port of the screening device 5 is connected with a discharging port of the coke quenching device 4, and the cooled pyrolysis solid-phase product is fed into the screening device 5 to be screened to obtain granular and powdery pyrolysis solid-phase product, wherein the pyrolysis solid-phase product is a red mud drilling cutting-based iron-carbon material, and has high specific surface area and high Cr (VI) selectivity. Wherein, granular pyrolysis solid phase product can regard as the adsorbent to use, and powdered pyrolysis solid phase product can be used as the adsorbent after the forming device shaping for the granule again, realizes the non-pollutant emission.
Therefore, the utility model carries out pyrolysis treatment on the oil-based drilling cuttings and the red mud to finally obtain granular pyrolysis solid-phase products as the adsorbent for wastewater treatment, thereby realizing pyrolysis solid-phase productionAnd (5) recycling the materials. The oil-based drilling cuttings and the red mud are subjected to synergistic treatment, so that the obtained product is an adsorbing material with a useful value, no pollutant is discharged, the purpose of treating wastes with wastes is achieved, and the oil-based drilling cuttings and red mud combined treatment method has the characteristics of simplicity and convenience in operation, stability, reliability, energy conservation, environmental friendliness and the like; in addition, the utility model fully utilizes the inherent characteristics of the raw materials and the products, and specifically comprises the following steps: in the process of pyrolysis, CO is utilized2、H2S、SO2When the acidity of the pyrolysis gas neutralizes the alkalinity of the red mud, the influence of the high alkalinity of the pyrolysis solid-phase product on the environment is reduced, and meanwhile, the corrosion of the high acidity of the pyrolysis oil gas on subsequent connecting pipelines is reduced, so that the stability and the reliability of the whole treatment system are ensured.
It is understood that the synergistic effect of iron and carbon in the oil-based drill cuttings and red mud in the catalytic pyrolysis process produces high quality adsorbent materials, i.e., pyrolysis solid phase products. Specifically, the method comprises the following steps: reducing and pyrolyzing oil gas and carbon element in oil-based drilling cuttings to remove Fe in red mud3+Reducing into Fe0 with Cr (VI) adsorption activity, simultaneously, the iron element and the oxide thereof in the red mud are high-efficiency catalysts for catalytic cracking in the pyrolysis process, have catalytic activity sites, and loose and porous active carbon grows on the surface of the red mud during pyrolysis, so that the final pyrolysis solid-phase product becomes a high-specific surface area (up to 1000 m)2Per gram) and high Cr (VI) selective adsorbing materials, namely red mud drilling cutting based iron carbon materials. Therefore, the red mud drill cutting-based iron-carbon material can be understood as follows: the composite material is produced by using two wastes of oil-based drilling cuttings and red mud as raw materials, and comprises Fe0 with Cr (VI) adsorption activity and loose and porous activated carbon.
In one embodiment of the present invention, the forming device 2 includes, but is not limited to, a plodder, a plate press, or the like.
According to the embodiment of the utility model, the treatment system further comprises a pyrolysis oil gas treatment unit, wherein the pyrolysis oil gas treatment unit is connected with the pyrolysis device 3 and is used for separating pyrolysis oil gas generated by pyrolysis and returning the treated pyrolysis gas and heavy oil to the pyrolysis device 3 to be used as fuels for combustion, so that the consumption of natural gas fuels of the whole system is reduced, and the recycling of resources is realized.
In one embodiment of the present invention, as shown in FIG. 1, a pyrolysis oil and gas treatment unit comprises: the device comprises an oil-gas condensation and separation device 6, an oil-water separation device 7 and a residual oil separation device 8, wherein an inlet of the oil-gas condensation and separation device 6 is connected with a pyrolysis oil-gas outlet of a pyrolysis device 3, a pyrolysis gas outlet of the oil-gas condensation and separation device 6 is connected with a fuel inlet of the pyrolysis device 3, pyrolysis oil gas generated by pyrolysis of the pyrolysis device 3 is introduced into the oil-gas condensation and separation device 6 to be condensed and separated, pyrolysis gas and pyrolysis oil-water are obtained, and the pyrolysis gas is returned to the pyrolysis device 3 to be used as fuel to participate in combustion; an inlet of the oil-water separation device 7 is connected with a pyrolysis oil-water outlet of the oil-gas condensation separation device 6, pyrolysis oil-water is introduced into the oil-water separation device 7, and the pyrolysis oil-water is separated by the oil-water separation device 7 to obtain pyrolysis water and pyrolysis oil; the inlet of the residual oil separation device 8 is connected with the pyrolysis oil outlet of the oil-water separation device 7, the heavy oil outlet of the residual oil separation device 8 is connected with the fuel inlet of the pyrolysis device 3, the pyrolysis oil is introduced into the residual oil separation device 8 to be separated, high-fluidity light oil and low-fluidity heavy oil are obtained, the light oil is low-sulfur high-quality clean oil, the economic value is high, the light oil can be recycled, and the heavy oil is high-sulfur low-quality oil and is returned to the pyrolysis device 3 to be burnt as fuel.
Therefore, the utility model not only reduces the energy consumption of the whole system, but also centrally controls the pollutants of the whole system through reinjection combustion of pyrolysis gas and heavy oil. Specifically, the method comprises the following steps: in the pyrolysis process, heteroatoms such as sulfur, nitrogen and the like tend to crack to form pyrolysis gas, meanwhile, a large amount of pollutants such as polycyclic aromatic hydrocarbons and the like are gathered in the heavy oil, the pyrolysis gas and the heavy oil are reinjected and combusted to intensively treat the pollutants generated in the whole process, and the generated sulfur and nitrogen oxides can be intensively treated in a subsequent desulfurization and denitrification device 13, so that the dispersity of the pollutants in the whole process is reduced, and the environment friendliness of the process is improved.
According to the embodiment of the utility model, as shown in fig. 1, a heat exchange pipeline 9 is arranged in the quenching device 4 and used for introducing normal-temperature combustion-supporting gas, the heat exchange pipeline 9 is externally connected with a first heat exchanger 10, and the first heat exchanger 10 is respectively connected with a fuel inlet and a flue gas outlet of the pyrolysis device 3. Let in normal atmospheric temperature combustion-supporting gas through heat exchange pipeline 9, normal atmospheric temperature combustion-supporting gas and the pyrolysis solid phase product heat transfer in the quenching device 4, reduce the temperature of pyrolysis solid phase product, simultaneously carry out primary preheating with normal atmospheric temperature combustion-supporting gas, obtain 70-100 ℃ middle temperature combustion-supporting gas, then let in first heat exchanger 10 and pyrolysis device 3 flue gas outlet exhaust 500 and give first place to heat and give first place to 700 ℃ high temperature flue gas heat transfer, carry out the secondary and preheat, form 300 and give first place to 500 ℃ high temperature combustion-supporting gas, cool down the high temperature flue gas simultaneously, obtain 100 and give first place to the low temperature flue gas of 200 ℃, high temperature combustion-supporting gas is combustion-supporting in the pyrolysis device 3 through pyrolysis device 3's fuel entry at last. The utility model preheats the normal-temperature combustion-supporting gas for the first time by utilizing the waste heat of the pyrolysis solid-phase product, and then preheats for the second time by utilizing the high-temperature flue gas, so that the energy of the whole process is utilized in a gradient manner, and the energy utilization rate of the whole process is improved.
According to the embodiment of the utility model, as shown in fig. 1, the treatment system of the utility model further comprises a second heat exchanger 11, the second heat exchanger 11 is connected with the first heat exchanger 10, and the low-temperature flue gas cooled by the first heat exchanger 10 is introduced into the second heat exchanger 11 for further cooling, so as to obtain the normal-temperature flue gas.
The specific kinds of the first heat exchanger 10 and the second heat exchanger 11 of the present invention are not particularly limited as long as heat exchange can be achieved. In the present example, the second heat exchanger 11 is a regenerative heat exchanger.
According to the embodiment of the utility model, as shown in fig. 1, the treatment system further includes a dust remover 12, a desulfurization and denitrification device 13 and a smoke exhaust device 14 which are connected in sequence, and the dust remover 12 is connected with the second heat exchanger 11, and the cooled normal temperature smoke is subjected to dust removal, desulfurization, denitrification and purification in sequence, and is discharged through the smoke exhaust device 14 after reaching the standard.
In one example of the utility model, the fume extractor 14 is a chimney.
According to an embodiment of the utility model, as shown in fig. 1, the treatment system further includes an oil-based drilling cutting pretreatment device 15 and a red mud crushing and preheating device 16, the oil-based drilling cutting pretreatment device 15 and the red mud crushing and preheating device 16 are respectively connected with a feeding port of the mixing device 1, the oil-based drilling cutting material is subjected to spin-drying and screening treatment through the oil-based drilling cutting pretreatment device 15 to obtain oil-based drilling cutting particles, the red mud is crushed and preheated through the red mud crushing and preheating device 16 to obtain heated red mud powder, and then the oil-based drilling cutting particles and the heated red mud powder are introduced into the mixing device 1 to be mixed to obtain a mixture of the oil-based drilling cutting particles and the heated red mud powder.
In one embodiment of the present invention, the pyrolysis apparatus 3 is a settling furnace reactor, and a heat accumulating type radiant tube is arranged in the settling furnace reactor, and the heat accumulating type radiant tube is used for heating, and it can be understood that the heat accumulating type radiant tube is provided with a flue gas outlet and a fuel inlet.
According to an embodiment of the present invention, the present invention further provides a method for the cooperative treatment of oil-based drill cuttings and red mud waste, wherein the treatment method described below and the treatment system described above are referred to with each other, as shown in fig. 2, and mainly comprises the following steps.
And S1, mixing the oil-based drill cuttings with the red mud to obtain a mixture.
And S2, forming the mixture into a pyrolysis raw material.
And S3, pyrolyzing the pyrolysis raw material to generate a pyrolysis solid-phase product.
And S4, cooling the pyrolysis solid-phase product.
S5, screening the cooled pyrolysis solid-phase product to obtain a granular pyrolysis solid-phase product which can be used as an adsorbent, wherein the pyrolysis solid-phase product is a red mud drilling cutting-based iron-carbon material and has high specific surface area and high Cr (VI) selectivity.
According to an embodiment of the present invention, the processing method of the present invention further comprises the steps of: and separating pyrolysis oil gas generated by pyrolysis, taking the pyrolysis gas and heavy oil obtained by treatment as pyrolysis fuels, and purifying flue gas generated by pyrolysis.
In one specific example, as shown in fig. 1, the oil-based drilling cutting material is dried and screened by the oil-based drilling cutting pretreatment device 15, so as to obtain oil-based drilling cutting particles with the particle size of 5-30mm, the red mud is crushed by the red mud crushing and preheating device 16 and then preheated to the set temperature of 100 ℃ and 300 ℃ to obtain the heated red mud powder, then the oil-based drilling cutting particles and the heated red mud powder are fed into a mixing device 1 to be mixed, the mixing mass ratio of the oil-based drilling cutting particles to the heated red mud powder is set to be 3: 7-7: 3, meanwhile, adding a binder, wherein the binder is uniformly stirred, the type of the binder comprises but is not limited to one or more of carboxymethyl cellulose (CMC), Phenolic Resin (PR) and polyvinyl butyral (PVB), and the adding proportion is controlled to be 10-20% of the mass of the total material, so as to obtain a mixture of the carboxymethyl cellulose (CMC), the Phenolic Resin (PR) and the PVB, and the mixture is a non-formed pyrolysis raw material. The unshaped pyrolysis raw material is processed by the forming device 2 to form a formed pyrolysis raw material, the formed pyrolysis raw material is pyrolyzed and activated by the pyrolysis device 3 in the temperature range of 500 plus 800 ℃ to generate a pyrolysis solid phase product, the pyrolysis solid phase product is cooled by the heat exchange pipeline 9 of the coke quenching device 4 and then is sent to the screening device 5 to be screened, the obtained granular pyrolysis solid phase product can be used as an adsorbent, and the powdery pyrolysis solid phase product can be formed into granules by the forming device again and then is used as the adsorbent.
Pyrolysis oil gas that pyrolysis device 3 pyrolysis produced lets in oil gas condensation separator 6 for the condensation separation processing, obtain pyrolysis gas and pyrolysis profit, pyrolysis gas sends back to participate in the burning as the fuel in pyrolysis device 3, the pyrolysis profit lets in oil water separator 7, carry out the separation processing to the pyrolysis profit through oil water separator 7, obtain pyrolysis water and pyrolysis oil, pyrolysis oil lets in residual oil separator 8 and carries out the separation processing, obtain light oil and heavy oil, light oil can carry out recycle, heavy oil sends back to participate in the burning as the fuel in pyrolysis device 3.
Let in normal atmospheric temperature combustion-supporting gas through heat transfer pipeline 9, normal atmospheric temperature combustion-supporting gas and the pyrolysis solid phase result heat transfer in the quenching device 4 reduce the temperature of pyrolysis solid phase result, preheat normal atmospheric temperature combustion-supporting gas once simultaneously, then let in first heat exchanger 10 and pyrolysis device 3 exhaust high temperature flue gas heat transfer, carry out the second and preheat, form high temperature combustion-supporting gas, cool down the high temperature flue gas simultaneously, high temperature combustion-supporting gas lets in last pyrolysis device 3 in combustion-supporting.
The low-temperature flue gas cooled by the first heat exchanger 10 is introduced into the second heat exchanger 11 to be further cooled to normal temperature, and then is subjected to dust removal, desulfurization and denitrification purification treatment and standard-reaching discharge sequentially by the dust remover 12, the desulfurization and denitrification device 13 and the smoke exhaust device 14.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides an oil base drill chip and red mud waste coprocessing system which characterized in that includes:
the mixing device is used for obtaining a mixture of the oil-based drilling cuttings and the red mud;
the forming device is connected with the mixing device and is used for forming the mixture into a pyrolysis raw material;
the feeding port of the pyrolysis device is connected with the forming device and is used for pyrolyzing the pyrolysis raw material to generate a pyrolysis solid-phase product;
a feeding port of the coke quenching device is connected with a discharging port of the pyrolysis device and is used for cooling the pyrolysis solid-phase product;
and the screening device is connected with a discharge port of the coke quenching device and is used for screening the cooled pyrolysis solid-phase product to obtain a granular pyrolysis solid-phase product, and the pyrolysis solid-phase product is a red mud drill chip-based iron-carbon material.
2. The oil-based drill cuttings and red mud waste co-processing system according to claim 1, further comprising a pyrolysis oil and gas processing unit, wherein the pyrolysis oil and gas processing unit is connected to the pyrolysis device, and is configured to separate pyrolysis oil and gas generated by pyrolysis and return the pyrolysis gas and heavy oil obtained by processing to the pyrolysis device.
3. The oil-based drill cuttings and red mud waste co-processing system of claim 2, wherein the pyrolysis oil and gas processing unit comprises: the inlet of the oil-gas condensation and separation device is connected with a pyrolysis oil-gas outlet of the pyrolysis device, and a pyrolysis gas outlet of the oil-gas condensation and separation device is connected with a fuel inlet of the pyrolysis device; the inlet of the oil-water separation device is connected with the pyrolysis oil-water outlet of the oil-gas condensation separation device; the inlet of the residual oil separation device is connected with the pyrolysis oil outlet of the oil-water separation device, and the heavy oil outlet of the residual oil separation device is connected with the fuel inlet of the pyrolysis device.
4. The oil-based drill cuttings and red mud waste coprocessing system of claim 1, wherein a heat exchange pipeline is arranged in the quenching device and used for introducing normal temperature combustion-supporting gas, the heat exchange pipeline is externally connected with a first heat exchanger, and the first heat exchanger is respectively connected with a fuel inlet and a flue gas outlet of the pyrolysis device.
5. The oil-based drill cuttings and red mud waste co-processing system of claim 4, further comprising a second heat exchanger, wherein the second heat exchanger is connected with the first heat exchanger.
6. The oil-based drill cuttings and red mud waste co-processing system according to claim 5, further comprising a dust remover, a desulfurization and denitrification device and a smoke exhaust device which are connected in sequence, wherein the dust remover is connected with the second heat exchanger.
7. The oil-based drill cuttings and red mud waste co-processing system according to claim 1, further comprising an oil-based drill cuttings pre-processing device and a red mud crushing and pre-heating device, wherein the oil-based drill cuttings pre-processing device and the red mud crushing and pre-heating device are respectively connected with the mixing device.
8. The oil-based drill cuttings and red mud waste co-processing system of claim 1, wherein the pyrolysis device is a settling furnace reactor.
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| CN202122029745.9U CN215480723U (en) | 2021-08-26 | 2021-08-26 | Oil base drill chip and red mud waste coprocessing system |
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| CN202122029745.9U CN215480723U (en) | 2021-08-26 | 2021-08-26 | Oil base drill chip and red mud waste coprocessing system |
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