CN216972315U - Drilling waste mud retrieves and recycles low temperature processing system - Google Patents
Drilling waste mud retrieves and recycles low temperature processing system Download PDFInfo
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- CN216972315U CN216972315U CN202220650462.8U CN202220650462U CN216972315U CN 216972315 U CN216972315 U CN 216972315U CN 202220650462 U CN202220650462 U CN 202220650462U CN 216972315 U CN216972315 U CN 216972315U
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Abstract
The utility model discloses a low-temperature treatment system for recycling drilling waste mud, which comprises a drilling waste mud collecting and pumping system, a material distributor, a low-temperature drying mechanism, a steam generating and conveying system and a material post-treatment system, wherein the material distributor is positioned at a feed inlet of the low-temperature drying mechanism, the steam generating and conveying system is connected with the low-temperature drying mechanism, and the material post-treatment system is arranged at a material outlet of the low-temperature drying mechanism; the drilling waste mud collecting and pumping system comprises a drilling waste mud collecting pool, a mud stirrer, a mud conveying pipeline and a single-screw pump, wherein the mud stirrer is arranged in the drilling waste mud collecting pool, one end of the mud conveying pipeline is connected with an outlet of the drilling waste mud collecting pool, and the single-screw pump is arranged on the mud conveying pipeline. The utility model has simple structure and convenient use, can ensure that the drilling waste mud retains the original activity of the mud when being processed at low temperature, can be repeatedly used without waste, has no hidden pollution trouble, and has low processing cost.
Description
Technical Field
The utility model belongs to the technical field of resource recycling of drilling waste mud, and particularly relates to a low-temperature treatment system for recycling drilling waste mud.
Background
Thousands of new oil and gas wells are drilled every year in China, the completion fluid (waste drilling mud, namely drilling waste mud) generated after the completion of each oil and gas well is about 100-280 cubic meters, and the water content is as high as more than 60%. In the drilling operation of oil and gas fields, the drilling mud is called 'drilling blood', and a water-based mud mixture formed by mixing limestone, barite, a lubricant, water, a high polymer, a fluid loss reducer, salts, additives, clay, organic clay, various chemical treatment agents, a plurality of steady colloidal suspension systems, rock debris and the like plays a very important role in the drilling operation of oil field exploitation. Such as: the drill bit and the drill cuttings are cooled, collapse is prevented, thin cakes can be formed on the well wall, and the effects of collapse prevention, filtration reduction and wall protection are achieved, the formation pressure is balanced, rock strata are crushed, rock cuttings are entrained, and the like.
At present, according to different treatment and discharge conditions, a plurality of treatment methods are available for used drilling waste mud at home and abroad, including solidification treatment, MTC technology, chemical enhanced solid-liquid separation technology, mechanical dehydration method, incineration method, spray drying method, recycling method, safe land burying method (also called pit sealing method), land farming method, destabilization drying yard treatment method, microbiological method and the like. At present, most oil and gas fields adopt a solidification landfill method to treat drilling waste. In practice, the solid landfill method is to add a large amount of curing agent (about 1/3 of the total amount of waste) into the waste of drilling crews, so that the water in the waste is absorbed and then buried in the ground. The added curing agent mainly comprises fly ash, lime, water glass and the like, so that the total amount of waste and the comprehensive utilization cost are greatly increased. More seriously, leachate from landfill waste still causes serious pollution to groundwater.
In summary, the prior art drilling waste mud treatment device and method have the following limitations: (1) the process flow is long and complex, the number of modules is large, the volume is large, and the investment is high; (2) in the treatment process, a large amount of dosing and gel breaking treatment is carried out through dosing equipment, so that the complexity of the equipment and secondary pollutants is further increased; (3) most of the treated sewage can not be recycled and needs to be transported to a sewage treatment plant or a centralized treatment station for secondary treatment. The existing sewage plant adopts an aeration method for treatment, occupies a large area, has large construction investment and can only meet three effluent indexes of BOD5, CODcr and ss.
In recent years, with the improvement of oil field drilling technology and the enhancement of oil-gas exploration and development, the drilling depth is continuously increased, the number of drilled wells is continuously increased, and the used drilling fluid is directly discharged without being treated, so that the serious pollution is caused to the surrounding soil, surface water and underground water, and the great threat is brought to the surrounding environment, so that the treatment requirement on the cyclic utilization of the drilling waste mud is very urgent. If the waste mud generated by each well can be recycled, nearly one hundred million yuan can be saved every year. Therefore, the development and application of the drilling waste mud purification and recycling system have remarkable economic benefits, and the benefits brought by the drilling waste mud recycling system are more inestimable from the perspective of environmental protection at present when the ecological environment is more and more emphasized.
Therefore, in order to treat the solid phase and slurry of drilling waste mud more simply, more efficiently and economically, it is necessary to design a low temperature treatment system for recovering and reusing drilling waste mud.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a low-temperature treatment system for recycling and reusing drilling waste mud, which has a simple structure and is convenient to use, and the drilling waste mud is treated in a low-temperature state, so that the drilling waste mud can keep the original activity of the mud, can be repeatedly used without waste, does not waste land resources, has no pollution hidden trouble and has low treatment cost.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a well drilling waste mud retrieves and recycles low temperature processing system which characterized in that: the device comprises a drilling waste slurry collecting and pumping system, a material distributor, a low-temperature drying mechanism, a steam generating and conveying system and a material post-processing system, wherein the material distributor is positioned at a feed inlet of the low-temperature drying mechanism and uniformly distributes the drilling waste slurry in the drilling waste slurry collecting and pumping system in the low-temperature drying mechanism, the steam generating and conveying system is connected with the low-temperature drying mechanism and provides steam required by low-temperature drying for the low-temperature drying mechanism, and the material post-processing system is arranged at a material outlet of the low-temperature drying mechanism and is used for crushing and packaging the dried materials; the drilling waste mud collecting and pumping system comprises a drilling waste mud collecting pool, a mud stirrer, a mud conveying pipeline and a single-screw pump, wherein the mud stirrer is installed in the drilling waste mud collecting pool, one end of the mud conveying pipeline is connected with an outlet of the drilling waste mud collecting pool, the single-screw pump is installed on the mud conveying pipeline and is close to one end, connected with the drilling waste mud collecting pool, of the mud conveying pipeline, and the other end of the mud conveying pipeline is connected with an inlet of a material distributor.
The drilling waste mud recycling and reusing low-temperature treatment system is characterized in that: the material distributor comprises a conical material distributor box body, the large port at the top of the material distributor box body is a material distributor inlet, the small port at the bottom of the material distributor box body is a material distributor outlet, two material distribution mechanisms which are oppositely arranged and distribute materials are rotatably arranged in the material distributor box body, the material distribution mechanism comprises a material distributor transmission shaft, a material distributor roller and a material distributor closed tooth, the material distributor roller is fixedly arranged on the outer wall of the material distributor transmission shaft, the number of the material distributor closed teeth is multiple, the material distributor closed teeth are uniformly fixed on the outer wall of the material distributor roller at intervals, the two ends of the transmission shaft of the material distributor are respectively and rotatably connected with the front wall and the rear wall of the material distributor, and the inlet of the material distributor is connected with the other end of the slurry conveying pipeline.
The drilling waste mud recycling and reusing low-temperature treatment system is characterized in that: the low-temperature drying mechanism comprises an installation box, a fixing frame, a primary drying mechanism and a secondary drying mechanism, wherein an evaporation hot gas outlet is formed in the top of the installation box, an evaporation hot gas pipeline is connected to the evaporation hot gas outlet, and a hot gas draught fan is arranged on the evaporation hot gas pipeline and close to the evaporation hot gas outlet; the utility model discloses a drying device, including the installation case, the mount is installed in the installation case, first stoving mechanism and secondary stoving mechanism are all installed on the mount and the discharge gate of first stoving mechanism can fall into the material feed inlet department that secondary stoving mechanism was constructed with the material, first stoving mechanism is located the top of secondary stoving mechanism, and the stoving temperature that first stoving mechanism provided for the material is 80 ℃ -108 ℃, and the stoving temperature that secondary stoving mechanism provided for the material is 60 ℃ -80 ℃.
The drilling waste mud recycling and reusing low-temperature treatment system is characterized in that: the primary drying mechanism comprises a plurality of drying boxes, a driving wheel, driving wheels, a third wheel, a material shifting tooth driving chain and material shifting teeth, wherein the plurality of drying boxes are sequentially arranged at intervals from top to bottom, two ends of the plurality of drying boxes are arranged in a staggered manner, a feeding end of an upper layer drying box protrudes out of a discharging end of a lower layer drying box, a feeding end of an upper layer drying box protrudes out of a discharging end of an upper layer drying box, the material shifting tooth driving chain is arranged around the upper layer of all the drying boxes, the driving wheel and the third wheel are both positioned at the upper side of one end of a fixing frame, the driving wheel is positioned above the third wheel, the plurality of driving wheels are respectively positioned at the discharging end of each layer of drying box, the plurality of material shifting teeth are arranged on the material shifting tooth driving chain at intervals, and scrape the materials at the top of the drying boxes into the tops of the adjacent lower layer drying boxes along with the rotation of the material shifting tooth driving chain, the material shifting tooth driving chain is meshed with the driving wheel, the driving wheel and the idle wheel, and the driving wheel, the driving wheel and the idle wheel are rotatably arranged on the fixing frame.
The drilling waste mud recycling and reusing low-temperature treatment system is characterized in that: each group of material shifting teeth consists of two rows of material shifting tooth units which are arranged in front and back, and the shifting teeth of the two rows of material shifting tooth units which are arranged in front and back are arranged in a staggered manner; the drying box is a U-shaped drying box provided with a U-shaped groove matched with the material shifting teeth on the upper portion.
The drilling waste mud recycling and reusing low-temperature treatment system is characterized in that: the structure of the secondary drying mechanism is basically the same as that of the primary drying mechanism, and the number of the drying boxes of the secondary drying mechanism is half of that of the primary drying mechanism.
The drilling waste mud recycling and reusing low-temperature treatment system is characterized in that: steam produces conveying system includes steam generator, vapor compression unit, first vapour admission line, second vapour admission line and vapor recovery pipeline, steam generator's gas outlet and vapor compression unit's access connection, vapor compression unit's export and the inlet end that first vapour admission line and second vapour admission line got into the pipeline are connected respectively, the end of giving vent to anger of first vapour admission line with first stoving mechanism the air inlet of stoving case is connected, the end of giving vent to anger of second vapour admission line and secondary stoving mechanism the air inlet of stoving case is connected, first stoving mechanism the gas outlet of stoving case and secondary stoving mechanism the gas outlet of stoving case all is connected with vapor recovery pipeline's one end.
The drilling waste mud recycling and reusing low-temperature treatment system is characterized in that: the material post-processing system comprises a screw conveyor, a material crusher, a vibrating screen and a material packaging machine, wherein a discharge hole of the screw conveyor is connected with a feed inlet of the material crusher, a discharge hole of the material crusher is connected with a feed inlet of the vibrating screen, an up-to-standard product outlet of the vibrating screen is connected with a feed inlet of the material packaging machine, an off-to-standard product outlet of the vibrating screen is connected with a feed inlet of the material crusher to return to the material crusher for crushing again, and a feed inlet of the screw conveyor is opposite to a discharge hole of a secondary drying mechanism.
The drilling waste mud recycling and reusing low-temperature treatment system is characterized in that: the heat exchanger is characterized by further comprising a heat exchanger, wherein an inlet of the heat exchanger is connected with an outlet of the evaporation hot gas pipeline.
The drilling waste mud recycling and reusing low-temperature treatment system is characterized in that: still include the vapour draught fan, the air inlet of vapour draught fan is connected with the other end of vapour recovery pipeline, the gas outlet and the access connection of vapor compressor unit of vapour draught fan, the comdenstion water export of vapour draught fan is connected with heat exchanger's comdenstion water discharge port.
Compared with the prior art, the utility model has the following advantages:
1. the low-temperature drying in the waste drilling mud treatment system provided by the utility model is a core element for realizing the drilling mud treatment, can effectively keep the original activity and performance state of the drilling mud, realizes the cyclic utilization of the mud, greatly reduces the cost input in the drilling process, and has the advantages of stable quality, low energy consumption, no pollution, simple process, low maintenance cost, simple and convenient operation and the like.
2. The drilling mud treatment system provided by the utility model has the advantages of simple structure, small occupied area, low cost, simple drilling mud and wastewater treatment process and high treatment efficiency, the treated drilling cuttings can be directly used for paving, the purified standard-reaching water can be directly used as reclaimed water for discharge or recycling, and resources are saved.
3. The drilling mud treatment system provided by the utility model can be applied to the treatment of drilling mud, municipal sludge and industrial wastewater and the treatment of polluted lake water, and has wide application range; meanwhile, the drilling mud treatment system with the structure can be widely applied to waste drilling mud treatment operation in the oil and gas drilling industry.
4. The utility model overcomes the defects of large transportation pressure, large discharge capacity and incapability of recycling existing in the traditional treatment method and equipment, can separate solid from liquid, can treat water, can respectively treat solid waste and wastewater after separation, is beneficial to environmental protection, recycling and reduction of environmental treatment cost, and has great social and economic values.
5. The utility model adopts the combined design, has high automatic control level, reduces the requirement on manpower, achieves the aim of high efficiency, greatly reduces the operating cost and saves manpower and material resources; the drilling fluid is convenient to mount, dismount and move, can adapt to the industrial characteristics of dispersity and fluidity of drilling operation, can be transported and used simultaneously along with drilling teams, realizes synchronous treatment on the drilling fluid and the completion fluid generated in the drilling process, realizes the cyclic utilization of the drilling fluid without falling into the ground, does not need to dig a mud pit for the drilling teams, greatly reduces the occupation of the ground, and avoids the pollution of the drilling fluid leakage and overflow to the environment.
6. In the process of exploiting the oil-gas field, the stability of the performance of the drilling mud is better, and the drilling mud has important significance for safety in a well and improvement of drilling efficiency. The drilling operation is carried out in the same geological region, and the maintenance and the performance stability of the drilling fluid are important guarantees for guaranteeing the safety of the drilling operation and improving the drilling efficiency. The utility model adopts low-temperature drying equipment to furthest retain the original activity or performance of the slurry for treatment, does not add any additive or chemical agent, does not cause secondary pollution, and realizes recycling. The utility model is an important matching device for maintaining and maintaining the performance of drilling fluid, is reliable to use, is beneficial to controlling the index of the drilling fluid, improving the drilling quality and the drilling work efficiency, shortening the drilling time, purifying and recycling the drilling fluid, reducing the construction cost, reducing the drilling sticking accident and reducing the environmental pollution, and has important significance for the drilling operation.
In conclusion, the utility model has the outstanding characteristics of simple equipment structure, simple and practical process flow, convenient use, low manufacturing cost, capability of recycling the treated mud, no waste of land resources, no pollution hidden danger, great reduction of drilling cost input and the like. If the waste slurry generated by each well can be recycled, more than dozens of ten thousand yuan can be saved, and the economic benefit is remarkable; today, the ecological environment is more and more regarded, and the social and economic benefits are more inestimable from the perspective of environmental protection, so the development of the drilling mud recycling system has good application prospect.
The utility model is described in further detail below with reference to the figures and examples.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the material distributor of the present invention.
Fig. 3 is a top view of the material distributor of the present invention.
Figure 4 is a side view of the material distributor of the present invention.
FIG. 5 is a top view showing the positional relationship of the mounting box, the drying box, the material shifting tooth drive chain, the material shifting tooth, the first steam inlet pipe and the steam recovery pipe of the present invention.
FIG. 6 is a side view showing the positional relationship among the mounting box, the fixing frame, the drying box and the material pushing teeth according to the present invention.
Description of reference numerals:
1-a well drilling waste mud collecting tank; 2-material distributor; 2-1-material distributor box;
2-material distributor transmission shaft; 2-3-material distributor roller;
2-4-closing teeth of the material distributor; 2-5-inlet of material distributor;
2-6-outlet of material distributor; 3-a slurry stirrer; 4-a slurry delivery pipeline;
5-single screw pump; 6, mounting a box; 7-primary drying mechanism;
7-1-drying box; 7-2-driving wheel; 7-3-a transmission wheel;
7-4-passing wheel; 7-5-material shifting tooth driving chain; 7-6-material shifting;
8, a secondary drying mechanism; 9-a vapor compressor train; 10-a steam generator;
11-a hot gas exhaust for evaporation; 12-an evaporation hot gas pipeline; 13-hot air draught fan;
14-a fixed mount; 15 — first vapor enters the conduit; 16-the second vapor enters the conduit;
17-a vapor recovery line; 18-a screw conveyor; 19-material crusher;
20-a vibrating screen; 21-material packaging machine; 22-a heat exchanger;
22-1-condensate drain; 23-steam induced draft fan.
Detailed Description
As shown in fig. 1, the utility model comprises a drilling waste slurry collecting and pumping system, a material distributor 2, a low-temperature drying mechanism, a steam generating and conveying system and a material post-processing system, wherein the material distributor 2 is positioned at a feed inlet of the low-temperature drying mechanism and uniformly distributes the drilling waste slurry in the drilling waste slurry collecting and pumping system in the low-temperature drying mechanism, the steam generating and conveying system is connected with the low-temperature drying mechanism and provides steam required by low-temperature drying for the low-temperature drying mechanism, and the material post-processing system is arranged at a material outlet of the low-temperature drying mechanism and crushes and packages the dried materials; the well drilling waste mud collecting and pumping system comprises a well drilling waste mud collecting pool 1, a mud stirrer 3, a mud conveying pipeline 4 and a single-screw pump 5, wherein the mud stirrer 3 is installed in the well drilling waste mud collecting pool 1, one end of the mud conveying pipeline 4 is connected with an outlet of the well drilling waste mud collecting pool 1, the single-screw pump 5 is installed on the mud conveying pipeline 4 and is close to one end, connected with the well drilling waste mud collecting pool 1, of the mud conveying pipeline 4, and the other end of the mud conveying pipeline 4 is connected with an inlet of a material distributor 2.
As shown in fig. 2 to 4, the material distributor 2 includes a material distributor box 2-1 in a cone shape, a large top port of the material distributor box 2-1 is a material distributor inlet 2-5, a small bottom port of the material distributor box 2-1 is a material distributor outlet 2-6, two material distribution mechanisms which are oppositely arranged and distribute materials are rotatably installed in the material distributor box 2-1, the material distribution mechanisms include a material distributor transmission shaft 2-2, a material distributor roller 2-3 and a material distributor closed tooth 2-4, the material distributor roller 2-3 is fixedly installed on the outer wall of the material distributor transmission shaft 2-2, and the number of the material distributor closed teeth 2-4 is multiple, the closed teeth 2-4 of the material distributors are fixed on the outer wall of the roller 2-3 of the material distributor at uniform intervals, two ends of a transmission shaft 2-2 of the material distributor are respectively rotatably connected with the front wall and the rear wall of the material distributor 2, and an inlet 2-5 of the material distributor is connected with the other end of the slurry conveying pipeline 4.
When the material distributor is used, the material distribution mechanism is driven by the driving device, and the material distributor transmission shaft 2-2 rotates to drive the material distributor roller 2-3 and the material distributor closed teeth 2-4 to rotate. The material distributor 2 rotates through two oppositely arranged material distribution mechanisms, and the materials are distributed by the mutual meshing of the closed teeth 2-4 of the oppositely arranged material distributors.
As shown in fig. 1, the low-temperature drying mechanism includes an installation box 6, a fixed frame 14, a primary drying mechanism 7 and a secondary drying mechanism 8, an evaporation hot gas exhaust outlet 11 is arranged at the top of the installation box 6, an evaporation hot gas pipeline 12 is connected to the evaporation hot gas exhaust outlet 11, and a hot gas induced draft fan 13 is installed on the evaporation hot gas pipeline 12 and near the evaporation hot gas exhaust outlet 11; the utility model discloses a drying device, including mounting bracket 14, primary drying mechanism 7 and secondary drying mechanism 8 are all installed on mounting bracket 14 and the discharge gate of primary drying mechanism 7 can fall into the material in the feed inlet department of secondary drying mechanism 8, primary drying mechanism 7 is located the top of secondary drying mechanism 8, and the drying temperature that primary drying mechanism 7 provided for the material is 80 ℃ -108 ℃, and the drying temperature that secondary drying mechanism 8 provided for the material is 60 ℃ -80 ℃.
As shown in fig. 1, 5 and 6, the primary drying mechanism 7 comprises a plurality of drying boxes 7-1, a driving wheel 7-2, a driving wheel 7-3, a third wheel 7-4, a material shifting driving chain 7-5 and a material shifting tooth 7-6, wherein the number of the drying boxes 7-1 is a plurality, the plurality of drying boxes 7-1 are sequentially arranged at intervals from top to bottom, two ends of the plurality of drying boxes 7-1 are arranged in a staggered manner, a feeding end of an upper layer drying box 7-1 protrudes out of a discharging end of a lower layer drying box 7-1, a feeding end of a lower layer drying box 7-1 protrudes out of a discharging end of the upper layer drying box 7-1, the material shifting driving chain 7-5 is arranged around the upper layer of all the drying boxes 7-1, the driving wheel 7-2 and the third wheel 7-4 are both positioned at the upper side of one end of a fixed frame 14, the driving wheel 7-2 is positioned above the idle wheel 7-4, the number of the driving wheels 7-3 is multiple, the driving wheels 7-3 are respectively positioned at the discharge end of each layer of drying box 7-1, the material shifting teeth 7-6 are arranged in multiple groups, the multiple groups of material shifting teeth 7-6 are uniformly arranged on the material shifting tooth driving chain 7-5 at intervals and scrape the material on the top of the drying box 7-1 into the top of the adjacent lower drying box 7-1 along with the rotation of the material shifting tooth driving chain 7-5, the material shifting tooth driving chain 7-5 is meshed with the driving wheel 7-2, the driving wheel 7-3 and the idle wheel 7-4, the driving wheel 7-2, the driving wheel 7-3 and the idle wheel 7-4 are all rotatably arranged on the fixed frame 14.
Wherein, the number of the material poking teeth 7-6 in fig. 5 is four, and the number of the layers of the drying box 7-1 in fig. 1 is six. When the drying box is in operation, the chain driving device drives the driving wheel 7-2 to rotate, the driving wheel 7-2 drives the material shifting tooth driving chain 7-5 to rotate, the material shifting tooth driving chain 7-5 drives the driving wheel 7-3 and the idle wheel 7-4 to rotate, and the material shifting tooth driving chain 7-5 drives the material shifting tooth 7-6 to shift materials on the drying box in the rotating process.
As shown in fig. 5 and 6, each group of the material shifting teeth 7-6 is composed of two rows of material shifting tooth units which are arranged in front and back, and the shifting teeth of the two rows of material shifting tooth units which are arranged in front and back are arranged in a staggered manner; the drying box 7-1 is a U-shaped drying box, the upper part of which is provided with a U-shaped groove matched with the material shifting teeth 7-6.
As shown in fig. 1, the structure of the secondary drying mechanism 8 is substantially the same as that of the primary drying mechanism 7, and the number of the drying boxes 7-1 of the secondary drying mechanism 8 is half of that of the drying boxes 7-1 of the primary drying mechanism 7. The number of the drying boxes of the secondary drying mechanism 8 is three layers, and besides, the structure of the secondary drying mechanism 8 is the same as that of the primary drying mechanism 7.
As shown in fig. 1, the steam generation conveying system includes a steam generator 10, a steam compressor unit 9, a first steam inlet pipeline 15, a second steam inlet pipeline 16 and a steam recovery pipeline 17, an air outlet of the steam generator 10 is connected to an inlet of the steam compressor unit 9, an outlet of the steam compressor unit 9 is connected to air inlet ends of the first steam inlet pipeline 15 and the second steam inlet pipeline 16, an air outlet end of the first steam inlet pipeline 15 is connected to an air inlet of the drying box of the primary drying mechanism 7, an air outlet end of the second steam inlet pipeline 16 is connected to an air inlet of the drying box of the secondary drying mechanism 8, and an air outlet of the drying box of the primary drying mechanism 7 and an air outlet of the drying box of the secondary drying mechanism 8 are both connected to one end of the steam recovery pipeline 17.
As shown in fig. 1, the material post-processing system includes a screw conveyor 18, a material crusher 19, a vibrating screen 20 and a material packaging machine 21, a discharge port of the screw conveyor 18 is connected with a feed port of the material crusher 19, a discharge port of the material crusher 19 is connected with a feed port of the vibrating screen 20, an up-to-standard product outlet of the vibrating screen 20 is connected with a feed port of the material packaging machine 21, a non-up-to-standard product outlet of the vibrating screen 20 is connected with the feed port of the material crusher 19 to return to the material crusher 19 for crushing again, and the feed port of the screw conveyor 18 is over against a discharge port of the secondary drying mechanism 8.
As shown in fig. 1, the present invention further comprises a heat exchanger 22, wherein an inlet of the heat exchanger 22 is connected to an outlet of the evaporated hot gas pipe 12, and condensed water generated from the heat exchanger 22 is discharged through a condensed water discharge port 22-1.
As shown in fig. 1, the utility model further comprises a steam induced draft fan 23, wherein an air inlet of the steam induced draft fan 23 is connected with the other end of the steam recovery pipeline 17, an air outlet of the steam induced draft fan 23 is connected with an inlet of the steam compressor unit 9, and a condensed water outlet of the steam induced draft fan 23 is connected with a condensed water outlet 22-1 of the heat exchanger 22. The effect of vapour draught fan 23 is the heat exchange of quickening, improves drying efficiency. The steam draught fan 23 actively conveys the low-temperature hot gas subjected to heat exchange into the steam compressor unit 9, and compared with the steam compressor unit 9, the energy-saving effect on heating cold air is good; the residence time of the steam in the drying box is shortened, the steam enters and exits more quickly, the heat exchange efficiency of the heat exchange box is higher, and the low-temperature drying efficiency is higher.
The working principle of the utility model is as follows: after the drilling construction is finished, all slurry liquid is prepared into completion fluid for stabilizing the well wall, the well is logged after casing is laid, then well cementation is carried out, and the completion fluid is discharged and collected into a ground drilling waste slurry collecting pool 1 for waiting treatment after the well is consolidated and completed; at this time, the waste slurry to be treated is only about 300, and the current process is about 1000.
The waste drilling mud is collected and stored in the waste drilling mud collecting tank 1 on the ground, and is fully stirred under the action of the mud stirrer 3, so that the components suspended in mud are uniformly mixed, and the component uniformity of each mud material in the raw material of mud material recycling is preliminarily ensured.
The slurry material is then conveyed into the material distributor 2 through the slurry conveying pipe 4 under the action of the single-screw pump 5. Through the matching of the single-screw pump 5 and the material distributor 2, slurry materials are uniformly distributed on a U-shaped drying box in the low-temperature drying mechanism, then under the action of a chain driving device, the material shifting teeth drive chains 7-5 to start to move, at the moment, the material shifting teeth 7-6 fixed on the material shifting teeth drive chains 7-5 start to move, and front and rear rows of shifting teeth opposite to the material shifting teeth 7-6 are in staggered arrangement, so that the materials can be slowly and effectively shifted to start to move forwards when the material shifting teeth 7-6 move. When the material is pushed to the tail end of the drying box 7-1 by the material shifting teeth 7-6, the material falls onto the drying box at the adjacent lower layer, and the material starts to move on the drying box at the lower layer in the opposite direction.
At this time, the vapor compression unit 9 starts to start, and under the action of the vapor generator 10, the vapor compression unit 9 starts to generate hot vapor, and the temperature of the hot vapor is controlled between 60 ℃ and 108 ℃. Firstly, hot steam enters a drying box (namely the drying box of a primary drying mechanism 7) of the uppermost six layers in a low-temperature drying mechanism through a first steam inlet pipeline 15, the temperature of the steam fed by the first steam inlet pipeline 15 is 80-108 ℃, the temperature is set to better rapidly dry and evaporate the moisture in the drilling waste slurry, and the steam entering the drying box is subjected to heat transfer with the drying box and then is dried with the drilling waste slurry material; the hot gas generated in the drying process enters the heat exchanger 22 through the evaporation hot gas pipeline 12 under the action of the hot gas induced draft fan 13 for treatment, and the hot steam is condensed and then discharged through the condensed water discharge port 22-1 in the form of condensed water.
The waste drilling mud materials are subjected to six reciprocating motions on the drying box of the primary drying mechanism 7, the moisture carried by the original mud is basically completely evaporated, and then the waste drilling mud materials enter the seventh layer of drying box (namely the drying box of the secondary drying mechanism 8).
At this time, hot gas of 60-80 ℃ is fed from the second steam inlet pipeline 16, the temperature is set to carry out secondary drying on the basically dried materials, and in addition, the activity and the characteristics of each original slurry material in the slurry materials are better kept, and the quality maximization of the recycled slurry materials is ensured. Through the processing of seventh, eighth, nine layers of stoving case, the stoving material falls into screw conveyer 18, through screw conveyer 18's transportation, the material gets into and carries out the crushing of corresponding mesh number in material crusher 19, is furnished with shale shaker 20 in the rubbing crusher exit and sieves, returns material crusher 19 once more with discharge that does not reach standard and smashes, and qualified crushing material gets into and waits to pack in material packaging machine 21's the feed bin.
Meanwhile, the steam compressor unit 9 recycles hot steam in the drying box of the low-temperature drying mechanism under the action of the steam induced draft fan 23, partial steam is discharged as condensed water after passing through the heat exchanger 22, and the condensed water can reach the reclaimed water standard and directly irrigate vegetation near the well site, so that the restoration of well site greening is accelerated.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a well drilling waste mud retrieves and recycles low temperature processing system which characterized in that: the device comprises a drilling waste slurry collecting and pumping system, a material distributor (2), a low-temperature drying mechanism, a steam generating and conveying system and a material post-processing system, wherein the material distributor (2) is positioned at a feed inlet of the low-temperature drying mechanism and uniformly distributes the drilling waste slurry in the drilling waste slurry collecting and pumping system in the low-temperature drying mechanism, the steam generating and conveying system is connected with the low-temperature drying mechanism and provides steam required by low-temperature drying for the low-temperature drying mechanism, and the material post-processing system is arranged at a material outlet of the low-temperature drying mechanism and crushes and packages the dried materials; the drilling waste mud collecting and pumping system comprises a drilling waste mud collecting pool (1), a mud stirrer (3), a mud conveying pipeline (4) and a single-screw pump (5), wherein the mud stirrer (3) is installed in the drilling waste mud collecting pool (1), one end of the mud conveying pipeline (4) is connected with an outlet of the drilling waste mud collecting pool (1), the single-screw pump (5) is installed on the mud conveying pipeline (4) and is close to one end of the mud conveying pipeline (4) connected with the drilling waste mud collecting pool (1), and the other end of the mud conveying pipeline (4) is connected with an inlet of a material distributor (2).
2. A drilling waste mud recovery and reuse cryogenic process system as claimed in claim 1, wherein: the material distributor (2) comprises a material distributor box body (2-1) in a conical shape, the top big port of the material distributor box body (2-1) is a material distributor inlet (2-5), the bottom small port of the material distributor box body (2-1) is a material distributor outlet (2-6), two material distribution mechanisms which are oppositely arranged and distribute materials are rotatably installed in the material distributor box body (2-1), each material distribution mechanism comprises a material distributor transmission shaft (2-2), material distributor rollers (2-3) and material distributor closed teeth (2-4), the material distributor rollers (2-3) are fixedly installed on the outer wall of the material distributor transmission shaft (2-2), and the number of the material distributor closed teeth (2-4) is multiple, the closed teeth (2-4) of the material distributors are fixed on the outer wall of the roller (2-3) of the material distributor at uniform intervals, two ends of a transmission shaft (2-2) of the material distributor are respectively and rotatably connected with the front wall and the rear wall of the material distributor (2), and inlets (2-5) of the material distributor are connected with the other end of the slurry conveying pipeline (4).
3. A drilling waste mud recovery and reuse cryogenic process system as claimed in claim 1, wherein: the low-temperature drying mechanism comprises an installation box (6), a fixing frame (14), a primary drying mechanism (7) and a secondary drying mechanism (8), an evaporation hot gas discharge port (11) is formed in the top of the installation box (6), an evaporation hot gas pipeline (12) is connected to the evaporation hot gas discharge port (11), and a hot gas induced draft fan (13) is installed on the evaporation hot gas pipeline (12) and is close to the evaporation hot gas discharge port (11); the utility model discloses a drying device, including mount (14), primary stoving mechanism (7) and secondary stoving mechanism (8), mount (14) are installed in install bin (6), and the discharge gate of primary stoving mechanism (7) is all installed on mount (14) and the feed inlet department that the material can fall into secondary stoving mechanism (8), primary stoving mechanism (7) are located the top of secondary stoving mechanism (8), and primary stoving mechanism (7) is 80 ℃ -108 ℃ for the stoving temperature that the material provided, and secondary stoving mechanism (8) is 60 ℃ -80 ℃ for the stoving temperature that the material provided of material.
4. A drilling waste mud recovery and reuse cryogenic processing system according to claim 3, wherein: the primary drying mechanism (7) comprises drying boxes (7-1), driving wheels (7-2), transmission wheels (7-3), idle wheels (7-4), material shifting tooth driving chains (7-5) and material shifting teeth (7-6), the number of the drying boxes (7-1) is multiple, the drying boxes (7-1) are sequentially arranged at intervals from top to bottom, two ends of the drying boxes (7-1) are arranged in a staggered mode, the feeding end of the upper layer drying box (7-1) protrudes out of the discharging end of the lower layer drying box (7-1), the feeding end of the lower layer drying box (7-1) protrudes out of the discharging end of the upper layer drying box (7-1), the material shifting tooth driving chains (7-5) are arranged around the upper layer of all the drying boxes (7-1), the driving wheels (7-2) and the idle wheels (7-4) are located at one end of a fixing frame (14), and the driving wheels (7-2) and the idle wheels (7-4) are located at one end of the fixing frame (14) The upper side of the drying box is provided with a driving wheel (7-2) which is positioned above the intermediate wheel (7-4), the number of the driving wheels (7-3) is multiple, the driving wheels (7-3) are respectively positioned at the discharge end of each layer of the drying box (7-1), the number of the material shifting teeth (7-6) is multiple, the multiple groups of the material shifting teeth (7-6) are uniformly arranged on the material shifting tooth driving chain (7-5) at intervals and scrape the material on the top of the drying box (7-1) into the top of the adjacent lower layer of the drying box (7-1) along with the rotation of the material shifting tooth driving chain (7-5), the material shifting tooth driving chain (7-5) is meshed with the driving wheel (7-2), the driving wheel (7-3) and the intermediate wheel (7-4), and the driving wheel (7-2), The driving wheel (7-3) and the idle wheel (7-4) are both rotationally arranged on the fixed frame (14).
5. A drilling waste mud recovery and reuse cryogenic process system according to claim 4, wherein: each group of the material shifting teeth (7-6) consists of two rows of material shifting tooth units which are arranged in front and back, and the shifting teeth of the two rows of material shifting tooth units which are arranged in front and back are arranged in a staggered manner; the drying box (7-1) is a U-shaped drying box, the upper part of which is provided with a U-shaped groove matched with the material shifting teeth (7-6).
6. A drilling waste mud recovery and reuse cryogenic process system according to claim 4, wherein: the structure of the secondary drying mechanism (8) is basically the same as that of the primary drying mechanism (7), and the number of the drying boxes (7-1) of the secondary drying mechanism (8) is half of that of the drying boxes (7-1) of the primary drying mechanism (7).
7. A drilling waste mud recovery and reuse cryogenic process system according to claim 4, wherein: the steam generation and delivery system comprises a steam generator (10), a steam compressor unit (9), a first steam inlet pipeline (15), a second steam inlet pipeline (16) and a steam recovery pipeline (17), the air outlet of the steam generator (10) is connected with the inlet of the steam compressor unit (9), the outlet of the vapor compressor unit (9) is respectively connected with the air inlet ends of a first vapor inlet pipeline (15) and a second vapor inlet pipeline (16), the air outlet end of the first steam inlet pipeline (15) is connected with the air inlet of the drying box of the primary drying mechanism (7), the air outlet end of the second steam inlet pipeline (16) is connected with the air inlet of the drying box of the secondary drying mechanism (8), the gas outlet of the drying box of the primary drying mechanism (7) and the gas outlet of the drying box of the secondary drying mechanism (8) are both connected with one end of a steam recovery pipeline (17).
8. A drilling waste mud recovery and reuse cryogenic process system according to claim 6, wherein: the material post-processing system comprises a screw conveyor (18), a material crusher (19), a vibrating screen (20) and a material packaging machine (21), wherein a discharge hole of the screw conveyor (18) is connected with a feed inlet of the material crusher (19), a discharge hole of the material crusher (19) is connected with a feed inlet of the vibrating screen (20), an up-to-standard product outlet of the vibrating screen (20) is connected with a feed inlet of the material packaging machine (21), a non-up-to-standard product outlet of the vibrating screen (20) is connected with the feed inlet of the material crusher (19) to return to the material crusher (19) for re-crushing, and the feed inlet of the screw conveyor (18) is just opposite to a discharge hole of the secondary drying mechanism (8).
9. A drilling waste mud recovery and reuse cryogenic process system according to claim 7, wherein: the device also comprises a heat exchanger (22), wherein the inlet of the heat exchanger (22) is connected with the outlet of the evaporation hot gas pipeline (12).
10. A drilling waste mud recovery and reuse cryogenic process system as claimed in claim 9, wherein: still include vapour draught fan (23), the air inlet of vapour draught fan (23) is connected with the other end of vapour recovery pipeline (17), the gas outlet of vapour draught fan (23) and the access connection of vapor compressor group (9), the comdenstion water export of vapour draught fan (23) is connected with condensate water discharge port (22-1) of heat exchanger (22).
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Effective date of registration: 20231007 Address after: 830099 Room 512, Building 1, Science Building, No. 458, Northwest Road, Shaibak District, Urumqi, Xinjiang Uygur Autonomous Region Patentee after: Xinjiang desert wonder Ecological Technology Co.,Ltd. Patentee after: Shangluo Hailan Technology Co.,Ltd. Address before: Chafang village, Fushui Town, Shangnan County, Shangluo City, Shaanxi Province Patentee before: Shangluo Hailan Technology Co.,Ltd. |
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