CN207726911U - A kind of shale gas exploitation fracturing fluid cycle tubulation evaporation minimizing processing equipment - Google Patents

Abstract

A shale gas mining fracturing flowback waste liquid circulation tube evaporation reduction treatment equipment, including coagulation irrigation, Fenton reaction tank, filter press, sedimentation tank, sand filter tank, and circulation tube connected by pipelines in sequence Atmospheric evaporator, steam boiler, water softening equipment and softened water tank; also includes sodium carbonate and PAC dosing device connected with coagulation tank, hydrogen peroxide, ferric sulfate and sulfuric acid dosing device connected with Fenton reaction tank, and static The sodium hydroxide dosing device connected to the mixer, the static mixer, the water pump and the corresponding valves are set on the pipeline. Each process section of the utility model is interlocking with each other, the process is complete, and the utility model has wide applicability to water inflow. At the same time, the process is simple, efficient and energy-saving, the operating cost is low, and the system structure is compact, which can greatly reduce the amount of wastewater treated by Sinotrans.

Description

A shale gas mining fracturing flowback waste liquid circulation tube evaporation reduction treatment equipment

technical field

The utility model relates to the field of industrial sewage and waste water treatment, in particular to a treatment process for reducing the volume of shale gas mining and fracturing waste liquid flowback.

Background technique

Shale gas exploitation fracturing flowback waste liquid is a kind of "special industrial (industrial) wastewater" produced in the process of shale gas exploitation. my country's shale gas mining discharges as much as 1 million tons of fracturing waste fluid every year. According to relevant statistics, the fracturing flowback waste fluid of each shale gas production well is about 30-50m ³ /d. Its components are very complex, mainly containing various organic additives such as oil, various guar gums, formaldehyde, various chemical treatment agents such as sulfate, bacteria and other substances. Therefore, shale gas fracturing flowback waste fluid has the characteristics of high COD value, high salt content, high stability, high viscosity, strong pungent smell, and difficult to degrade, which is extremely harmful to the environment. After these substances enter the environment, especially the groundwater and surface water environment, they will bring persistent pollution to the water and soil environment system, and cause immeasurable losses to the production and long-term development of shale gas. Therefore, the treatment of fracturing flowback waste fluid has become one of the key environmental issues restricting the development of shale gas.

However, limited by site conditions and technical level, the treatment technology of shale gas fracturing waste fluid in my country is not yet mature, and some waste fluids are even directly reinjected or discharged into the environment without treatment, which further aggravates the shale gas fracturing process. The urgency of gas fracturing wastewater treatment. At present, the commonly used fracturing waste treatment processes mainly include "Fenton oxidation-flocculation-SBR combined treatment", "flocculation-oil separation-photocatalytic oxidation", "Fenton oxidation-flocculation reinjection treatment", "flocculation-oil separation- Precipitation - two-stage oxidation", "chemical destabilization - filtration - O ₃ /H ₂ O ₂ - composite catalytic oxidation - deep oxidation", etc. The above combined process can realize the complementary advantages of individual technologies, improve the treatment effect, reduce the amount of chemical agents, and reduce costs. However, these processes all focus on the treatment of suspended matter and organic matter in wastewater, and the treatment effect on salt in wastewater is not obvious. And because the salt content in shale gas fracturing waste fluid is very high, the treatment of salt in waste fluid has become a difficult problem in the treatment of shale gas fracturing waste fluid. Moreover, most of these treatment processes are still in the experimental research stage, and the actual engineering application is seldom. Even if a small number of applications are used, the amount of re-injection or discharge water after treatment is still large, resulting in high costs for re-injection and re-injection.

With the increasingly severe environmental problems in the country, it is an urgent need for the development of fracturing waste fluid produced in the process of shale gas exploitation with high efficiency and low cost.

Contents of the invention

The purpose of the utility model is to provide a shale gas mining fracturing and flowback waste solution with high efficiency, easy operation, easy movement and low processing cost in view of the problem of large amount of waste liquid treatment in fracturing and blowback of existing shale gas mining. Liquid circulation tube evaporation reduction treatment equipment, in view of the characteristics of complex composition, variability and dispersion of fracturing flowback waste liquid itself, focuses on reducing waste liquid to solve the problem of fracturing flowback in my country's shale gas mining industry. The problem of waste water treatment.

The technical scheme that the utility model adopts is as follows:

A shale gas mining fracturing flowback waste liquid circulation tube evaporation reduction treatment equipment, including coagulation irrigation, Fenton reaction tank, filter press, sedimentation tank, sand filter tank, and circulation tube connected by pipelines in sequence Atmospheric evaporator, steam boiler, water softening equipment and softened water tank; also includes sodium carbonate and PAC dosing device connected with coagulation tank, hydrogen peroxide, ferric sulfate and sulfuric acid dosing device connected with Fenton reaction tank, and static The sodium hydroxide dosing device connected to the mixer, the static mixer, the water pump and the corresponding valves are set on the pipeline.

The equipment adopts a special structure of circulating tube atmospheric evaporator, which is a square or circular tower structure. The tower of the evaporator is equipped with a fan, a water eliminator, a water distributor, a circulating tube heater, a packing area and a circulating The water collecting tank and the water pump are arranged outside the tower.

The fan is an axial-flow high-power fan, which is installed at the top outlet of the evaporator. The type and power of the fan are determined by the required evaporation air volume, but the power of the fan must ensure that the wind speed at the outlet of the evaporator reaches 12-20m/s.

The water distributor is located on the upper part of the evaporator, and is composed of branch pipes and nozzles arranged in a branch shape. The nozzles adopt large-flow atomizing nozzles. The diameter of the water supply pipe and the specifications of the nozzles are selected according to the design water volume. The flow rate and individual nozzle spray flow are determined.

The water eliminator is installed between the water distributor and the fan, and is made of corrosion-resistant material and made into a wave shape.

The circulating tube heater is installed in the packing area in the middle of the evaporator. It is made of anti-corrosion, high-temperature resistant, high-pressure stainless steel or copper tubes with fins. It adopts a disc-shaped or "U"-shaped coil structure to ensure large flow The fluid is forced to circulate, the circulation tube heater is connected with the heat source outside the tower, and the length and the number of layers of the circulation tube are calculated from the required heat exchange.

The packing in the packing area is made of high temperature resistant anti-corrosion material with a honeycomb structure, which is filled between the coils of the circulating tube heater and surrounds the circulating tube heater.

An air inlet is provided at the lower part of the evaporator, and a circulating water collecting tank is provided at the bottom.

The exterior of the above structure is encapsulated with anti-corrosion materials to form the casing of the circulating tube atmospheric evaporator unit.

The features of the utility model are as follows:

1. The utility model adopts the combination technology of chemical coagulation-Fenton deep oxidation-physical pressure filtration as the pretreatment step of circulation tube evaporation and concentration. After coagulation pretreatment, the effluent is directly filtered by a filter press and then undergoes subsequent Fenton deep oxidation treatment. The effluent after deep oxidation is precipitated and then circulated back to the belt filter press for filtration. This process is simple, through chemical coagulation + Fenton deep oxidation treatment can effectively remove most of the organic pollutants and suspended solids in wastewater, and achieve solid-liquid separation through pressure filtration, which can effectively improve the evaporation efficiency of wastewater and prevent evaporators Fouling.

2. The utility model specially adopts an atmospheric evaporator with a circular tube evaporator as the evaporation concentration equipment, which performs low-temperature evaporation concentration on the waste water after physical and chemical treatment, greatly reduces the amount of waste water transported out, and can effectively reduce the treatment cost. The atmospheric evaporator of the utility model is different in structure from the evaporator or cooling tower commonly used in the prior art, and also has essential differences in principle. The usual evaporator or cooling tower enters the tower through the air with low H value, and after heat exchange with the high temperature treatment water flow, the hot air with high H value is pumped out from the top to achieve the purpose of lowering the temperature of the treated water; and this utility model The new atmospheric evaporator enters the tower through the dry air with high enthalpy under the action of a high-power axial flow fan. The gas transfers heat to the waste water in the tower, providing part of the heat required for the evaporation of waste water, and then the low enthalpy value The air with high humidity is drawn out by the fan, so as to increase the evaporation of the circulating wastewater and achieve the purpose of concentration. Compared with the traditional evaporator, the circulating tubular atmospheric evaporator can greatly reduce the heating energy consumption. Compared with subsequent treatment by biological methods, this method has the advantages of smaller treatment facilities, simple treatment process, lower operating costs, and a wider range of application to influent water quality. When biological treatment is used, the waste liquid with high salt content may inhibit the growth of microorganisms and affect the treatment effect, but the use of evaporation and concentration can avoid this problem. Moreover, on the one hand, the evaporation treatment can reduce the waste water, effectively reduce the treatment cost, and greatly reduce the amount of waste water transported; on the other hand, the shale gas fracturing waste liquid is concentrated, which is beneficial to the waste The recovery and reuse of metal salts in the liquid can effectively solve the problem of high salt content in the shale gas fracturing waste liquid, and turn the metal salts in the waste liquid into resources.

This atmospheric evaporator has several obvious structural innovations, the specific analysis is as follows:

(1) The evaporator must use a high-power fan, that is, to ensure that the wind speed at the outlet of the evaporator reaches 12-20m/s. This is because the purpose of this evaporator is: the energy required for the evaporation of waste water is not all provided by the heating column. Instead, the heating tubes are designed to provide only a part of the heat required for evaporation, and the other part is provided by a large amount of air with a high enthalpy drawn in by a high-power fan. That is, in the atmospheric evaporator, part of the heat required for the evaporation of waste liquid is provided by air heat transfer, and part of it is provided by the heating of circulating tubes. Since the liquid evaporation rate is related to the air flow rate on the liquid surface, the greater the flow rate of the air on the surface of the water film, the more conducive to speeding up the evaporation rate. Therefore, the high-power fan takes advantage of its high wind speed and large gas flux to enhance air circulation. , increase the flow velocity of the air on the water surface, make the escaped water vapor molecules diffuse rapidly, maintain the evaporation diffusion power as a constant, do not reduce it, and increase the gas flow rate and gas flow rate in the evaporator, thereby increasing the evaporation efficiency, which can save heating Energy consumption, the total energy consumption is greatly reduced compared with the energy consumption of the heating tube heating to provide the heat required for the evaporation of waste water, which is essentially an innovation in the principle of this evaporator.

(2) In order to increase the enthalpy value of the air sucked in by the high-power fan, the air intake of the evaporator will first pass through the air intake tube installed on one side of the evaporator. The air is heated to further increase the enthalpy of the air and keep the incoming air dry, which is conducive to improving the evaporation efficiency inside the evaporator.

(3) The circulation tubes of this evaporator are arranged in the packing area instead of being arranged separately. When the waste water is poured into the packing area, a longer residence time will be obtained. The heating time of the waste water is shortened. At the same time, the surface area of the filler area is large, and the heat transfer area increases after the waste water forms a water film, which can improve the heating efficiency.

(4) This evaporator does not perform additional heating to improve the evaporation efficiency of the wastewater that is circulated and sprayed through the circulating water pump, because if the wastewater is heated first, the temperature of the wastewater will be much higher than the air temperature, and the heat of the water will be transferred to Air with a lower temperature causes heat loss, and the process of evaporating waste water is a heat-absorbing process. This situation will not be conducive to the evaporation of waste water. The waste water circulation of this evaporator adopts the natural circulation of the circulation pump, and at the same time, the steam heats the tubes. Putting it in the packing area will not cause a temperature difference between the air and the waste water, thereby reducing unnecessary heat loss. In addition, the atmospheric evaporator is equipped with an air inlet tube with an air dry-burning tube, which can heat the air entering the evaporator first, and increase the enthalpy of the air entering the evaporator, and the incoming air will transfer heat to the waste water. Conducive to waste water evaporation heat absorption.

(5) The atmospheric evaporator adopts honeycomb structure and high temperature resistant and anti-corrosion material packing, which has a long service life, and the honeycomb structure packing has a large specific surface area. On the other hand, the heat exchange area is increased and the evaporation rate is accelerated.

3. The utility model adopts continuous water inlet in operation, and realizes the continuous operation state of wastewater between the coagulation tank, Fenton oxidation tank, filter press, sand filter tank and evaporator through valve control, avoiding the delay caused by intermittent operation performance, improve operating efficiency;

4. The utility model has simple equipment, short process, convenient maintenance, and no need to build reaction pools and other structures on site; it has a long service life; the entire process flow can be automatically controlled, greatly reducing staffing;

The utility model is a physical and chemical combined system that uses chemical coagulation-physical pressure filtration-high-efficiency evaporation and concentration technology to process shale gas fracturing waste liquid. The system can effectively solve the problem of shale in my country in terms of economy and technology. Difficulties in the treatment of fracturing flowback fluid in the process of gas production.

Description of drawings

Fig. 1 is a schematic diagram of the shale gas mining fracturing flowback waste liquid circulation tube evaporation reduction treatment equipment of the present utility model.

Fig. 2 is a schematic structural view of a circulating tubular atmospheric evaporator with a specific structure of the present invention.

Fig. 3 is a structural schematic diagram of another specific structure of the circulating tubular atmospheric evaporator of the present invention.

In the figure, 1—coagulation tank; 2—Fenton reaction tank; 3—filter press; 4—sedimentation tank; 5—sand filter tank; 6—sodium hydroxide dosing device; 7—sodium carbonate and PAC dosing device ;8—hydrogen peroxide, ferric sulfate and sulfuric acid dosing device; 9—circulation tube atmospheric evaporator; 10—static mixer; 11—pump; 901—axial fan; 902—shell; 903—water eliminator; —Water distributor; 905—Nozzle; 906—Circulating tube heat exchanger; 907—Filler; 908—Inlet grille; 909—Flow meter; 910—Circulating water pump; 911—Circulating water supply tank; ; 913—drain outlet; 914—base; 915—pressure gauge; 916—observation window; 917—air intake tube bracket; 918—air intake tube;

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described

Referring to the accompanying drawing 1, the shale gas mining fracturing flowback waste liquid circulation tube evaporation reduction treatment equipment proposed by the utility model includes a coagulation irrigation 1, a Fenton reaction tank 2, a filter press 3, Sedimentation tank 4, sand filter tank 5, circulating tube evaporator 9, sodium carbonate and PAC dosing device 7 connected with coagulation tank, hydrogen peroxide, ferric sulfate and sulfuric acid dosing device 8 connected with Fenton reaction tank, The sodium hydroxide dosing device 6, the static mixer 10, and the water pump 11 connected with the static mixer are provided with corresponding valves on the pipelines.

Referring to Fig. 2, the shell 902 of the circulating tube atmospheric evaporator 9 is a square column tower structure, and the tower is equipped with an axial flow fan 901, a water eliminator 903, a water distributor 904, a circulating tube heater 906, and a packed bed 907 And a circulating water collection tank 911, and a water pump 910 is arranged outside the tower.

Among them, the axial flow fan 901 is set on the top of the evaporator, which is an axial flow high-power fan, and the fan power needs to ensure that the wind speed at the outlet of the evaporator reaches 12-20m/s.

The water distributor 904 is located on the upper part of the evaporator, and is composed of branch pipes and nozzles arranged in a dendrite shape. The nozzles adopt large-flow atomizing nozzles. The diameter of the water supply pipe and the specifications of the nozzles are selected according to the design water volume. Water flow rate and individual nozzle spray water flow rate determination.

The water eliminator 903 is installed between the water distributor 904 and the axial flow fan 901, and is made of corrosion-resistant material in a wave shape.

The circulating tube heater 906 is installed in the middle of the evaporator, and is made of anti-corrosion, high-temperature resistant, high-pressure stainless steel or copper tubes with fins. The shape is a "U"-shaped coil structure. The heat exchange is calculated to ensure the high-flow fluid pressure circulation, and the circulation tube heater is connected with the heat source steam boiler 10 outside the tower, and the heat source comes from the steam boiler.

The packed bed 907 is made of high temperature resistant anti-corrosion material with a honeycomb structure, which is filled between the coils of the circulating tube heater. The evaporating packed bed has a wide channel, and the crystallization condition cannot be reached during the whole evaporation process, which will not cause the packed bed to be blocked, and is easy to disassemble, wash and maintain routinely.

The air intake grille 908 is arranged at the lower part of the evaporator, and the circulating water collection tank 911 is located at the bottom of the evaporator.

The exterior of the above structure is packaged with anti-corrosion materials to form the casing 902 of the circulating tubular atmospheric evaporator unit.

Fig. 3 is another structural form of the circulating tubular atmospheric evaporator 9, on the basis of Fig. 2, an air inlet tube 918 is added to increase the temperature of the air drawn into the tower. The air inlet cylinder 918 communicates with the evaporator at the entrance of the lower part of the evaporator. The connection between the air inlet cylinder shell and the evaporator shell is sealed but detachable. The non-connecting side is sealed with anti-corrosion materials. The air inlet cylinder is supported by the bracket 917. At the same time, the air intake grille needs to be installed on the top, and the air dry heating pipe 919 is installed in the air intake cylinder.

The treatment of fracturing flowback waste fluid mainly consists of four treatment processes:

(1) Coagulation and sedimentation pretreatment: pump the fracturing flowback fluid into the coagulation pretreatment tank, and add aluminum-based polyaluminum chloride (PAC) and sodium carbonate to the fracturing flowback fluid wastewater with the dosing device 7 (Na ₂ CO ₃ ) for coagulation pretreatment to form precipitates of Ca ²⁺ and Mg ²⁺ ions, and at the same time remove impurities such as turbidity, suspended solids, residual components of fracturing fluid, and crude oil in wastewater. The hydraulic retention time of the coagulation pretreatment flocculation process is 15±5min.

(2) Fenton oxidation: After the coagulation pretreatment, the effluent is pumped into the filter press by a screw pump to achieve solid-liquid separation, and the filtered waste water flows into the Fenton reaction tank by itself, and the peroxidation is added to the Fenton reaction tank with the dosing device 8 Hydrogen, ferric sulfate, sulfuric acid, using valves to control the feeding time and dosage. Under the catalysis of Fe ²⁺ ions, H ₂ O ₂ further oxidized and degraded the refractory organic matter in wastewater through Fenton oxidation, and the reaction time was 1.25±0.25h.

(3) precipitation filtration: the waste water after Fenton oxidation will flow into sedimentation tank 4, in the flow process by being installed in the static mixer 10 in the pipeline, add Fe in the waste water after Fenton reaction in the Fe ³⁺ ion in the precipitation water of Fenton, After the solution is precipitated in the sedimentation tank, the solid-liquid separation is carried out again through the filter press, and the filtrate flows into the sand filter tank 5 for filtration.

(4) Evaporation and concentration: the waste water after leaving the sand filter tank is pumped into the circulation tube evaporator 9 for evaporation and concentration. The concentrated evaporation treatment steps of the waste water in the circulating tubular atmospheric evaporator 9 are as follows:

When the pretreated high-salt wastewater enters the atmospheric evaporator, the wastewater is first pumped into the spray system 905 above the circulating heating tube 906 through the circulating water pump 910, and an appropriate amount of sufficient mist is evenly sprayed into the tower through the water distributor 904. The atomized wastewater flows through the heating circulation tubes 906 under the action of gravity, and the heating circulation tubes are filled with honeycomb fillers 907 to form a layer of film-like water flow to increase the heat transfer area and heat transfer time, and improve the heat transfer performance. efficiency. The spray wastewater is quickly vaporized into water vapor and enters the gas phase after fully exchanging heat with the atmosphere and the heating cycle tubes. The vaporized water vapor is taken away by the high-power fan 901, thereby realizing the evaporation and concentration of the wastewater. The rest of the waste water falls back to the circulating water collection tank 911 at the bottom of the evaporator, and then sent to the spraying system 905 by the circulating water pump 910 for recycling. The water droplets entrained in the air are blocked by the water eliminator 903, and fall back into the circulation tube heater to evaporate after being heated. The high-temperature steam is fed into the circulating heating tubes, and the high-temperature steam enters the circulating tubes from the steam inlet on the upper part of the coil, and exchanges heat with the spray wastewater and air outside the circulating tubes, and is gradually condensed from a gaseous state to a liquid state. The steam outlet flows out and flows back into the softened water tank. At the same time, the dry air with a higher temperature enters the tower through the air inlet grid 908 at the bottom under the action of the fan (Fig. 2), or enters the air inlet cylinder 18 (Fig. 3), and enters the evaporator after being heated by the air dry heating pipe 919 When the wastewater flows through the surface of the filler, a water film is formed to exchange heat with the air. The air with high humidity and low temperature is drawn from the top, and part of the heat required for the evaporation of the waste liquid is provided by air heat transfer, and part of it is provided by the circulation tube. Heating provided. The rest of the waste liquid drips into the bottom circulating water collection tank. The waste water dripped into the bottom circulating water collection tank is pumped into the spraying system through the circulating water pump, the water is circulated, and the waste water is sprayed circularly to improve the evaporation efficiency. In the evaporator, the ratio of designed treatment water volume to circulating water volume is 1:10, and the evaporation efficiency is 50%.

The difference between the high-power fan used in the evaporator and the fan used in the ordinary evaporator is that the fan function of the ordinary evaporator only has a drainage function, which only draws the steam in the tower out of the evaporator through the fan; The evaporator adopts a high-power fan, which can increase the gas flow rate and gas flow rate in the evaporator. The evaporation rate is related to the air flow rate on the liquid surface. The greater the air flow rate, the more conducive to evaporation; and the principle of this evaporator is also different from the traditional evaporator. The difference is that the energy required for the evaporation of the traditional evaporator is basically provided by the heating tube, while part of the energy required for the evaporation of the evaporator is provided by the heating tube, and the other part is provided by the air with a higher enthalpy value, which can save heating energy consumption. Therefore, it is also necessary to use a fan with a higher power to provide a larger gas flow, but the total energy consumption is significantly lower than that of an ordinary evaporator; the fan power of the evaporator needs to be determined according to the height of the evaporator filling area and the design evaporation, depending on the actual situation The situation needs to ensure that the wind speed at the outlet of the evaporator is about 12-20m/s, and the wind speed at the outlet is much higher than the wind speed at the outlet when the ordinary evaporator is working. In terms of energy consumption, the actual amount of steam required for evaporating 1 kg of water in an ordinary evaporator is about 1.2-1.6 kg, while the actual amount of steam required for evaporating 1 kg of water in this evaporator is about 0.6-0.8 kg. The energy consumption is about 50%-60% of the overall energy consumption of ordinary evaporators, and the specific effect will fluctuate depending on the ambient temperature and humidity of the site.

The treatment equipment of the utility model is used to treat the fracturing flowback waste liquid of a shale gas production well in Sichuan Province. The water quality of each stage in the treatment process is shown in Table 1.

Table 1 Water quality analysis of fracturing flowback fluid after treatment in each stage

The COD of the raw water is 565mg/L, the hardness is 3710mg/L, the total dissolved solids are 1.52×10 ⁴ g/L, the chloride is 1.72×10 ⁴ mg/L, and the designed treatment capacity is 5m ³ /h. For the coagulation pretreatment and belt filter press part, the hydraulic retention time of the coagulation tank is 15min, the dosage of polyaluminum chloride is 3.75kg/h, and the dosage of Na ₂ CO ₃ is 18.55kg/h. For the Fenton oxidation treatment part, the dosage of FeSO ₄ 7H ₂ O is 1.25kg/h, the dosage of H ₂ O ₂ is 3.14kg/h, the dosage of H ₂ SO ₄ is 0.25g/h, and the dosage of NaOH is 0.54kg/h, the oxidation reaction time is 1.25h, and the residence time in the inclined plate sedimentation tank is 3h. The effluent quality after treatment is 72mg/L COD, 31.32mg/L hardness, and 16.06g/L total dissolved solids. In the evaporation and concentration treatment part of the circulating tube evaporator, the ratio of waste liquid treatment water to circulating water is 1:10, and the design evaporation is 50%.

Claims (6)

1. a kind of shale gas exploitation fracturing fluid cycle tubulation evaporates minimizing processing equipment, which is characterized in that including according to The secondary coagulation filling being connected to by pipeline, cycle tubulation atmospheric evaporator, is steamed Fenton retort, filter press, sedimentation basin, sandfiltration pot Boiler furnace, water softening plant and softening water tank；Further include filling the sodium carbonate being connected and PAC chemicals dosing plants and Fenton with coagulation Hydrogen peroxide and ferric sulfate and sulfuric acid chemicals dosing plant that retort is connected and the sodium hydroxide dosing that static mixer is connected fill It sets, static mixer, suction pump and the valve being accordingly arranged on pipeline；

The cycle tubulation atmospheric evaporator is square or round tower structure, and the high-power wind of axial-flow type is arranged in the tower of evaporator Suction pump is arranged outside in machine, water collection device, water distributor, cycle tube still heater, packing area and cycle header tank, tower；The axial-flow type High-power blower is located at evaporator top exit, and the power of wind turbine need to ensure that evaporator outlet wind speed reaches 12-20m/s；Cloth Hydrophone is located at evaporator top, and water collection device is mounted between water distributor and axial-flow type high-power blower；It is filler in the middle part of evaporator Area is filled with the heat safe anti-corrosion material of honeycomb structure, and cycle tube still heater is arranged in packing area, around by filler It surrounds, the cycle tube still heater and tower external heat source unicom, the length and the number of plies for recycling tubulation are calculated by required heat exchange amount It arrives；Air inlet, base of evaporator setting cycle header tank is arranged in evaporator lower part.

2. shale gas exploitation fracturing fluid cycle tubulation as described in claim 1 evaporates minimizing processing equipment, special Sign is：The air inlet is also associated with into air duct, into air dry combustion method pipe is equipped in air duct, is entered the wind into air duct and evaporator Mouth is tightly connected and is detachable structure.

3. shale gas exploitation fracturing fluid cycle tubulation as described in claim 1 evaporates minimizing processing equipment, special Sign is：The air inlet of evaporator and the air inlet of air duct is provided with air-inlet grille.

4. shale gas exploitation fracturing fluid cycle tubulation as described in claim 1 evaporates minimizing processing equipment, special Sign is：The water collection device is corrosion-resistant material, is made as waveform.

5. shale gas exploitation fracturing fluid cycle tubulation as described in claim 1 evaporates minimizing processing equipment, special Sign is：The water distributor is to be made of with water conduit tube and branch pipe and nozzle what is arranged in dendroid, and nozzle uses big flow mist Change nozzle, nozzle quantity and arrangement are determined by cloth water flow and single-nozzle spray flow.

6. shale gas exploitation fracturing fluid cycle tubulation as described in claim 1 evaporates minimizing processing equipment, special Sign is：The cycle tube still heater uses band fin anti-corrosion and high temperature resistant, high pressure stainless steel or copper tube to make, using outer Shape is disc or U-typed coil arrangement.