14results about How to "Prevent liquefaction" patented technology

The utility model relates to a gas outlet structure and a horizontal carbonization and graphitization integrated furnace. The air outlet structure comprises a reaction furnace shell, a reaction main body and an air outlet assembly, wherein the reaction main body is arranged in the reaction furnace shell; the air outlet assembly comprises a plurality of air outlet pipes, a connecting pipe and a heat preservation layer, one end of each air outlet pipe is located in the reaction main body, the other end penetrates through the reaction main body and the reaction furnace shell to the outside, and the connecting pipe is communicated with the outside end of each air outlet pipe; the part, positioned outside the reaction furnace shell, of each air outlet pipe is coated with a thermal insulation layer; according to the carbonization and graphitization integrated furnace, a plurality of air outlets are formed by designing a plurality of air outlet pipes, so that the exhaust area of the carbonization and graphitization integrated furnace is increased, tar and other gases can be efficiently and stably exhausted, and the tar is prevented from being accumulated in the furnace or a pipeline; in addition, the outer side of the air outlet pipe is wrapped with the heat preservation layer, the temperature in the air outlet pipe can be effectively reduced, tar liquefaction is prevented, and it is guaranteed that gas is smoothly exhausted.

The utility model discloses a flash evaporation device, including the flash evaporation jar body, its one side is provided with the feed end, the flash evaporation jar body top is provided with the air valve system that can control the pressure in the jar body, the flash evaporation jar body bottom is provided with the discharge end, the flash evaporation jar body inside is provided with the upper spiral layer and lower spiral layer, the upper spiral layer and lower spiral layer are connected as the integrated structure through double spiral pipe, the feed end is located between the upper spiral layer and lower spiral layer. The utility model has the following beneficial effects: the device is provided with the upper spiral layer and lower spiral layer and the double spiral pipe of external heat source in the flash evaporation jar body inside upper and lower ends to ensure that flash evaporation liquid can continuously absorb heat in the process of being evaporated into steam, avoids that steam generates liquefaction. The structure setting of upper spiral layer and lower spiral layer increases the time of steam rising, guarantees that steam can absorb enough heat in the process of rising.

The utility model belongs to the technical field of titanium tetrachloride production, and relates to a novel dust collection device, in particular to a novel dust collection device in the process of producing titanium tetrachloride by a fused salt chlorination method. By installing the automatic gate valve and the heating furnace, liquid titanium tetrachloride can be effectively prevented from entering the dust collection slag tank, a large amount of air can be prevented from entering a production system when the dust collection slag tank is replaced, and leakage of titanium tetrachloride gas when the dust collection slag tank is replaced is prevented, so that the titanium yield of titanium tetrachloride is improved, and the production cost is reduced. And the working environment of a dust collection area can be effectively improved, so that green and clean production of fused salt chlorination is realized. The two-half heating furnace is arranged, the dust collection slag tank is convenient to replace, and the flat car is arranged at the bottom of the heating furnace, so that the heating furnace is convenient to move when the dust collection slag tank is replaced.

The utility model discloses a tower top condensing device for extracting and purifying cineole, which comprises a shell, a condenser is mounted in an inner cavity of the shell, a circular plate is arranged in the inner cavity of the condenser and close to the top, a plurality of circular holes are formed in the circular plate, a conveying pipeline is fixedly connected to the top of the circular plate, and the conveying pipeline is communicated with the condenser. The top end of the conveying pipeline penetrates through the top of the outer shell and extends to the outer side of the outer shell, the outer side of the circular plate is movably sleeved with an inner shell, the outer side of the conveying pipeline is wrapped with the heating piece through the conveying pipeline, the heating piece and the heat preservation sleeve, and preheating operation is conducted on the conveying pipeline through the wrapped heating piece; the heat preservation sleeve wrapping the outer side is used for conducting heat preservation measures on the whole, the problem that high-temperature airflow is liquefied due to low temperature when flowing in the conveying pipeline is effectively avoided, the yield of the eucalyptus oil is guaranteed, and meanwhile the situation that liquid is attached to the inner wall of the conveying pipeline, and consequently follow-up work is affected is avoided.

The invention relates to the technical field of pipes, and particularly discloses a freezing-resistant, pressure-resistant and explosion-proof carbon dioxide conveying pipeline which comprises a plurality of pipe bodies which are in butt joint with one another, every two adjacent pipe bodies are spliced through a connecting unit, and each connecting unit comprises a barrel and an end disc integrally arranged at the end of the corresponding pipe body; annular clamping grooves are formed in the end faces, opposite to the end discs, of the barrel, the annular clamping grooves are filled with annular sealing bags, and the annular sealing bags are pre-filled with curing sealant. Triggering pieces are arranged at the two ends of the barrel. When the local carbon dioxide gas pressure in the pipeline is too large, the triggering piece can be automatically triggered, the annular sealing bag body is broken, the pre-filled curing sealant flows out, the annular clamping groove is filled with the pre-filled curing sealant, then curing is conducted, the sealing performance and the connecting strength are further improved, leakage and burst caused by too large pressure are prevented, and the pressure resistance and anti-explosion performance of the pipeline are improved.

The invention relates to an installation construction method for a fan installation ship and the fan installation ship. The theoretical leg insertion range is determined according to geological data, and all the pile legs are lowered to the seabed surface and then sink by means of self weight, so that the pile legs are preliminarily in place. The pile is actively pressed for the first time, and pressure is maintained after staged loading of the pile leg, so that soil around the pile leg restores a stable state, and the settling stability of the pile leg is improved. After the platform of the fan installation ship is lifted, the weight of the fan installation ship is basically borne by the pile legs, at the moment, secondary active pile pressing enables the pile legs to be further compacted and pierce into a hard layer, and the bearing capacity is improved. Active pile pressing for the second time is achieved through staged loading of diagonal pile legs, it is guaranteed that the ship body is stressed symmetrically, and meanwhile stable transition from a soft layer to a hard layer can be dealt with; and the pressure is maintained until no further settlement exists, so that the pile leg insertion depth meets the theoretical leg insertion range. According to the method, through theoretical leg insertion range pre-judgment and two different graded loading and pressure maintaining stability, the method adapts to complex seabed geology, and the installation positioning construction reliability of the fan installation ship is improved.

The invention provides a water vapor compression system, a control method thereof and a storage medium, the method is applied to the water vapor compression system, the system comprises a compressor, a vapor generator, a first valve and a first pressure sensor, and a gas outlet of the vapor generator is connected with a gas inlet of the compressor; the first valve is installed between an air outlet of the steam generator and an air inlet of the compressor, the first pressure sensor is installed at the air inlet of the compressor, and the method comprises the steps that a first pressure value, collected by the first pressure sensor, of steam entering the compressor is obtained, and when the first pressure value is larger than a first pressure threshold value, the opening degree of the first valve is reduced. According to the method, steam entering the compressor can be prevented from being liquefied, so that stable operation of the compressor is maintained.

The utility model relates to the technical field of PVDF (Polyvinylidene Fluoride) production, in particular to a PVDF production feeding device which comprises a feeding pipe, a feeding end and a discharging end are arranged at two ends of the feeding pipe, the discharging end is connected with a polymerization kettle, a jacketed pipe is arranged outside the feeding pipe, a medium inlet and a medium outlet are arranged on the jacketed pipe, and a heat insulation sleeve is arranged outside the jacketed pipe. A heat insulation interlayer is arranged between the heat insulation sleeve and the jacketed pipe and is filled with inert gas; the feeding pipe is obliquely arranged, the lower end of the feeding pipe is a feeding end, and a liquid collecting hopper is arranged at the feeding end. According to the utility model, the product yield, the product quality stability and the production safety and stability are improved.

The present invention provides a method for producing N-vinylacetamide which prevents raw material gas (gasified raw material) from being liquefied due to recondensation, thereby suppressing the clogging problem caused by condensates in a pyrolysis reactor and enabling stable continuous operation over a long period of time. A method for producing N-vinylacetamide, comprising: a supply step of supplying a raw material containing N-(1-methoxyethyl)acetamide (MEA) to an evaporator, an evaporation step of evaporating the raw material in the evaporator to form a gasified raw material, a superheating step of supplying the gasified raw material to a superheater so that the superheated temperature of the gasified raw material becomes a temperature that is 5°C higher than the boiling point of N-(1-methoxyethyl)acetamide (MEA) at the internal pressure of the superheater (the boiling point of N-(1-methoxyethyl)acetamide at the internal pressure of the superheater + 5°C) and 200°C or less, and a pyrolysis step of supplying the superheated gasified raw material to a pyrolysis reactor for pyrolysis; wherein the content of N-(1-methoxyethyl)acetamide in the raw material is 80 to 100% by mass.

The utility model discloses a kind of medical gas busbar of multiple monitoring function, it is related to medical gas busbar technical field, including connecting assembly, monitoring component, control assembly and gas cylinder, the connecting assembly includes secondary pipe, main pipe and air pressure sensor, the main pipe is fixedly installed in the inside of secondary pipe, the air pressure sensor is fixedly installed in the inside of main pipe, the monitoring component includes humidity sensor, dehumidifier and gas concentration detector, the dehumidifier is electrically connected with humidity sensor, the control assembly is set in the outside of connecting assembly, the control assembly includes control box, buzzer and pilot lamp, the buzzer and pilot lamp are electrically connected with control box.The utility model is under the joint action of humidity sensor and dehumidifier, the air humidity inside shell is detected by humidity sensor, air in atmosphere is separated by dehumidifier simultaneously, dry air is introduced into the inside of shell, prevent moisture liquefaction.

The utility model relates to the technical field of biomass furnaces, and discloses a biomass furnace wall structure which comprises a first furnace wall and a second furnace wall, the first furnace wall and the second furnace wall are sequentially distributed on a furnace body from outside to inside, and a furnace wall separation cavity is formed between the first furnace wall and the second furnace wall; the furnace further comprises an air outlet pipe and an air inlet pipe, the air outlet pipe and the air inlet pipe are installed on the first furnace wall and the second furnace wall respectively, and the air outlet pipe and the air inlet pipe are both communicated with the furnace wall partition cavity; a sealing plate is mounted in the furnace wall separation cavity; and one ends of the gas outlet pipe and the gas inlet pipe in the furnace wall separation cavity are respectively positioned on two sides of the sealing plate. Biomass gas produced in the furnace body enters the furnace wall separation cavity through the gas inlet pipe, the biomass gas surrounds the furnace wall separation cavity by a circle and then is discharged through the gas outlet pipe, and the biomass gas is heated and subjected to heat preservation through the temperature in the furnace body, so that the temperature of the biomass gas is increased, and the energy consumption is reduced. And tar liquefaction caused by rapid temperature reduction after biomass gas is discharged is avoided, and the combustion efficiency of the biomass gas is improved.

The invention provides a construction method of a carrier pile, which can ensure the forming efficiency and the construction quality of a carrier in a soil layer with rich underground water content, and comprises the following steps: 1) sealing a prefabricated hollow pipe body; 2) sinking the prefabricated hollow pipe body; (3) a rammer is placed, the position is marked, and cement sand is mixed and extruded to open a sealing bottom; (4) filling and tamping are conducted, and the tamping position is controlled not to exceed the bottom end of the prefabricated hollow pipe body; (5) the tamping position is controlled to descend gradually and is flush with the bottom end of the prefabricated hollow pipe body; (6) the tamping position is controlled to continue to descend and exceed the bottom end of the prefabricated hollow pipe body; (7) after the three-strike penetration of the rammer is measured, the ramming position is controlled to rise gradually and be flush with the bottom end of the prefabricated hollow pipe body, and (8) material filling bottom sealing or filler tamping bottom sealing is carried out. The construction method further comprises another construction method for controlling the ramming position not to exceed the bottom end of the prefabricated hollow pipe body all the time and controlling the compactness through the filler amount.

The application discloses a hydraulic control system for stable operation of an ocean temperature difference energy power generation full working condition, and belongs to the technical field of ocean temperature difference energy power generation. The hydraulic control system comprises a temperature difference energy power generation assembly and an intelligent hydraulic stability control assembly. The intelligent hydraulic stability control assembly comprises a monitoring unit, a hydraulic valve, an electric control valve and an intelligent valve control unit. The monitoring unit is used for monitoring multiple types of information data, feeding back a circulating operation working condition of a turbine device, and transmitting the monitored information data to the intelligent valve control unit. The real-time circulating operation working condition of the turbine device is compared with an optimal operation working condition to determine the opening and closing states of the electric control valve. The electric control valve is electrically connected with the intelligent valve control unit to control the opening and closing and the opening degree of the electric control valve, so as to control the flow size of each branch of the system. The electric control valve comprises an electric valve and a pneumatic tee electric ball valve. The electric control valve is connected with a hydraulic cylinder to control the flow size of the hydraulic cylinder, so that the pressure of the whole system is kept stable.

The application relates to the technical field of gas filtration, in particular to a honeycomb filter which comprises a box body, a wind guide pipe and a filter body in communication with the wind guide pipe, a cladding shell is arranged on the filter body, a plurality of heat exchange cavities are arranged between the cladding shell and the filter body, sealing plates are rotationally arranged at air inlet positions of the plurality of heat exchange cavities, a temperature control protection unit connected with the sealing plates and the heat exchange cavities is arranged in the box body. When the honeycomb filter is used, the plurality of heat exchange cavities between the cladding shell and the filter body are arranged, and a pure mechanical temperature control protection unit driven by a temperature sensing bag is matched, the number of heat exchange cavities participating in heat exchange can be automatically adjusted according to the change of tail gas temperature, accurate dynamic regulation and control of the working temperature of the filter body is realized, thereby effectively avoiding the thermal expansion and thermal stress accumulation of the filtering medium caused by continuous heat action, and micro cracks or sintering deformation of the honeycomb ceramic body is prevented.