38results about How to "Avoid coke clogging" patented technology

The invention discloses an industrial production method for separating a boron isotope product based on a methyl-phenoxide-boron trifluoride complex, belonging to the technical field of separation of isotope. The industrial production method mainly aims to solve the problem that a methyl-phenoxide-boron trifluoride complex chemical reaction exchange rectifying method is serious during vacuum material carrying and the like. The industrial production method comprises the following steps: firstly, performing gas stripping and drying treatment to the methyl-phenoxide-boron trifluoride complex, continuously adding the methyl-phenoxide-boron trifluoride complex from a gas stripping tower kettle into a first exchange rectifying tower kettle, continuously extracting liquid in the fore exchange rectifying tower kettle into the next tower top, condensing steam at the top of the next tower top, and continuously entering the fore tower kettle; under pressure-reduced heating distillation, enabling a boron trifluoride gas and methyl ether gas to enter shell passes of a condenser and a catcher, enabling a coolant to travel the shell passes of the condenser and the catcher, wherein a minus 60DEG C methyl ether solution pump is conveyed to a spray device so as to spray a boron trifluoride gas, the boron trifluoride gas and the methyl ether gas are converted into the methyl-phenoxide-boron trifluoride complex. The industrial production method has the advantage of being capable of solving the problem of vacuum material carrying.

The invention belongs to the technical field of needle coke preparation, and relates to a delayed coking process for preparing coal-based needle coke, in particular to a multi-tower delayed coking process with a heat polycondensation tower and a coking tower. The technical scheme includes that the coking process includes the steps: pretreating coal tar, coal pitch, modified pitch and the like to obtain finished raw materials; heating the finished raw materials, and enabling the heated raw material to enter a heat polymerization tower; polymerizing the raw materials to generate an intermediatephase in the inertness or reduction atmosphere; rapidly heating materials containing the intermediate phase and inert oil when the content of the intermediate phase of the materials reaches 30-60%; conveying the heated mixture into the coking tower to generate coke, and calcining the coke to obtain the needle coke. High-temperature oil and gas of the coking tower is divided into fuel gas and coking oil by a fractionating tower, the coking tower serves as a product output system, the process can accurately control coking reaction degree of coal-based needle coke raw materials, coking and jamming of a device pipeline are avoided, and long-period stable operation of coal-based needle coke production is achieved.

The invention relates to a high-efficiency cyclone type biomass powder combustor used for a boiler and a kiln. The combustor is composed of a water cooling sleeve, an end cover and the like. No hole that disturbs rotational flow is arranged between two ends of a cyclone combusting chamber. Biomass powder is put into the combustion chamber through a feeding hole and dispersed and pushed by cyclone of a cyclone hole so that wall-attached combustion and floating combustion are achieved. Raging fire erupts out of a fire and air hole. Ash is pulled out from an ash outlet hole. Coal particles are carbonized to be ash in a carbonization pool. A water exiting pipe, an air exhausting pipe, a water entering pipe, a sewage draining pipe and a water temperature sensor penetrate into the water cooling sleeve. The water cooling sleeve is used for regulating furnace temperature, recycling heat and safety protection. An igniter starts a combustion process. Combustion situations are observed from a fire observation hole. A safety valve ensures safety. A furnace temperature sensor detects furnace temperature. The problems that a rotation flow field is disturbed due to blowing-in from multiple air holes, bunkers are not fully combusted; slag short out and escaping happen, residues are condensed and formed at the air holes and the problems of coal particle coking, insufficient combustion and dust pollution caused by material particles, furnace temperature, flow speed, communication of the feeding hole and the fire and air hole and the like are basically solved.

The invention discloses a rectangular flowmeter, and belongs to the field of flow measurement. The rectangular flowmeter comprises a measuring pipeline and a throttling block. The top of the throttling block is connected with the top wall of the measuring pipeline in a fastened mode. The bottom of the throttling block is a rectangular throttling face parallel to the down-flow axial direction of the measuring pipeline, the head end and the tail end of the throttling face extend towards the two ends of the measuring pipeline to the top wall of the measuring pipeline to form a contracted flow face and a recovery face, the throttling block divides the measuring pipeline into a straight pipe section, a contracted flow section, a throttling section, a recovery section and an extension section which are communicated in sequence, a negative pressure obtaining hole for extracting negative pressure is upwards formed in the throttling face of the throttling block, the center position of the negative pressure obtaining hole meets the following relation expressions that 1/2Lt<x<Lt, wherein x is the distance between the head end of the throttling face and the center position of the negative pressure obtaining hole, and Lt is the length of the throttling section. According to the rectangular flowmeter, the structure of the rectangular flowmeter is improved, and the measuring accuracy can be improved.

The present invention provides a combustor propulsion system, the system includes a combustor; a propulsion mechanism, the propulsion mechanism includes a sliding device and a sliding driving device, the sliding device is fixedly connected with the combustor, and drives the combustor Moving back and forth in the direction of the combustion chamber, the sliding drive device drives the sliding device to move or stop; and a control module, the control module automatically controls the propulsion mechanism so that the sliding drive device drives the The sliding device drives the burner to move forward or backward, wherein the forward movement causes the nozzle of the burner to enter the combustion chamber, and the backward movement causes the nozzle of the burner to exit the combustion chamber . According to the burner propulsion system of the present invention, the burner can be taken out in time when the burner is not running, and the burner can be sent into the combustion chamber in time when the burner needs to be operated, avoiding the tediousness of frequent manual taking out and reducing labor costs.

The invention discloses a biomass burning device for butt-jointed boilers, heat exchangers and heat supply systems. The biomass burning device comprises a burner body, a carbonizing machine and a vapor generator, wherein the carbonizing machine is used for producing fuel required by burning of the burner body; and a vapor output pipe of the vapor generator is communicated with a burning chamber of the burner body. Tar is separated out of raw biomass materials through preliminary cracking by the carbonizing machine, so that the obtained biomass fuel is low in tar content, and the phenomenon of coking inside the burning chamber during burning is effectively avoided. Meanwhile, water vapor is used for supporting burning, so that coking elimination can be facilitated, and the fire temperature of burning flames, the biomass fuel rate and the heat value can be increased. According to the biomass burning device, the carbonizing machine, the vapor generator and the burner body are combined organically, so that the problems that traditional biomass burners are low in burning rate, easy to coke, low in work efficiency, unstable in operation and the like are solved. The biomass burning device can be used for the butt-jointed boilers, the heat exchangers and the heat supply systems as well as other equipment or systems using open fire for heating, such as large thermal motors and the like.

The invention discloses a coal tar suspended bed coupled fixed bed hydrocracking process and a device, the device comprises a catalyst storage tank, the catalyst storage tank is connected with a catalyst mixing tank, and the catalyst mixing tank is connected with a catalyst feed pump; and also comprises a coal tar buffer tank, wherein the coal tar buffer tank is connected with an oil slurry feeding pump, the oil slurry feeding pump is connected with a first heating furnace, the first heating furnace is connected with a hydrogen heating furnace, and the hydrogen heating furnace is connected with the first suspended bed reactor; the coal tar buffer tank is also connected with a first vacuum tower, the first vacuum tower is connected with a second heating furnace, the second heating furnace is connected with a hot low-pressure separator, the first suspended bed reactor is connected with a second suspended bed reactor, an outlet of the second suspended bed reactor is connected with a hot high-pressure separator, and the hot high-pressure separator is connected with a cyclone separator and a hot medium-pressure separator; the cyclone separator is connected with the fixed bed reactor. The process is short in technological process, high in conversion rate and light oil yield and low in energy consumption, the interior of the reactor and a feeding and mixing system are not prone to being blocked, and a pressure reduction system is not prone to being abraded.

The invention provides a vacuum tower for waste lubricating oil pretreatment. The vacuum tower is of a cylinder vertical structure; a tower tray is not arranged in the vacuum tower; a tower skirt, a feeding port, a baffle, an over-vaporized oil production section, a distillate oil production section, a diesel production section and a gas outlet are formed in the vacuum tower; two packing sectionscan be arranged among the diesel production section, the distillate oil production section and the over-vaporized oil production section according to the difficulty of separation of distillate oil ineach of the production sections; further, backflow spray distributors are respectively arranged on the three oil production sections and the packing sections. According to the vacuum tower in the scheme of the invention, the tower tray and fillers are directly replaced by utilizing a sprayer, the pressure drop is reduced in a manner of spray fractionation, the separation effect is good, and the process is simple, convenient and practical; moreover, according to the fraction separation difficulty, whether the fillers are provided or not can be freely selected, the heat and mass transfer efficiency is enhanced, and flexible and variable effects are realized, Importantly, the technical scheme of the invention solves the problem of influence on continuous production due to coking in all positions in the vacuum tower.

The invention discloses an internal component for a fractionating tower, and belongs to the field of petroleum equipment. The tower internal component comprises a fluid distribution pipe, fluid distribution grooves and a baffle mechanism which are sequentially distributed at intervals from top to bottom; the baffle mechanism comprises at least three layers which are arranged at intervals from top to bottom, adjacent upper and lower layers of baffles are arranged in a staggered mode, each layer of baffles comprises a plurality of baffles arranged at intervals, and the distance between every two adjacent baffles in the same layer of baffles is smaller than the width of the baffles; the fluid distribution pipe is used for distributing fluid into the fluid distribution groove; the fluid distribution grooves are used for distributing fluid to the topmost baffle of the baffle mechanism, the multiple fluid distribution grooves are arranged at intervals, and a balance groove is formed between every two adjacent fluid distribution grooves and used for enabling the liquid levels of the multiple fluid distribution grooves to be consistent. The tower internal component can obviously increase the gas-liquid contact area, is beneficial to enhancing the heat and mass transfer effect, prevents oil gas from coking and blocking, reduces the gas resistance drop, and obviously improves the washing effect of catalyst powder.

The invention discloses a fluidized bed industrial solid waste incinerator adopting tubular air distribution and a working method thereof, and belongs to the technical field of solid waste disposal. The lower part of a furnace body is a conical section, a solid waste inlet and a material returning inlet are formed in the conical section, the solid waste inlet is connected with a feeding system, and the material returning inlet is connected with a material returning device; a smoke outlet is formed in the upper portion of the furnace body and connected with a separation device, a bottom outletof the separation device is connected with the material returning device, and an upper outlet of the separation device is connected to a tail flue; a bottom slag outlet in the bottom of the conical section is connected with a slag falling pipe and is provided with a slag discharging valve; a plurality of layers of fluidization air distribution pipes are arranged in the conical section and are connected with a fluidization air system; gaps for slag falling are reserved between the adjacent fluidization air distribution pipes and between the fluidization air distribution pipes and the wall surface of the conical section; and a plurality of air outlet holes are formed in the fluidization air distribution pipes. The industrial solid waste incinerator is reasonable and flexible in structural design, particularly suitable for industrial solid waste disposal, high in application value and easy to industrialize.

The invention provides a suspended bed hydrogenation discharge system, which comprises a suspended bed hydrogenation reactor, wherein the top portion of the suspended bed hydrogenation reactor is connected to a reaction product pipeline, the bottom portion of the suspended bed hydrogenation reactor is connected to a reaction material inlet pipeline and a discharge pipeline, the discharge pipelineis connected to a cooling separation system, and the cooling separation system is respectively connected to a torch system and a raw oil recycling system. According to the present invention, the liquid phase and the catalyst solid in the suspended bed hydrogenation reactor are rapidly discharged during the emergency discharge to stop the occurrence of the reaction and ensure the uniform density ofthe reaction material in the reactor, such that the heavy component deposition phenomenon cannot occur, the thermal runaway of the suspended bed hydrogenation reactor can be avoided, the temperaturein the reactor can be effectively controlled, the safety can be improved, the pressure of the suspended bed hydrogenation reactor can be stabilized at the high pressure, the equipment fatigue caused by the frequent pressure increase and pressure reduce can be avoided, and the energy consumption and the cost can be reduced.

The invention provides a separation device for preventing coking at the bottom of a catalytic depropanization tower. The device comprises a depropanization tower, an inlet pipeline is arranged in the middle of the depropanization tower, a tower top gas phase delivery pipeline is arranged at the top of the depropanization tower, and a tower top condensation mechanism and a tower top reflux tank are sequentially arranged on the tower top gas phase delivery pipeline along the gas phase flowing direction. According to the invention, a low-pressure depropanization process is adopted for separation, so that the operation temperature of the tower bottom is effectively reduced, the problem of coking and blocking at the bottom of the depropanization tower is fundamentally solved, and reduction of the processing load and non-planned shutdown of a catalytic gas separation device caused by the coking and blocking at the bottom of the depropanization tower are avoided; the temperature of the tower bottom is low, and a reboiler at the tower bottom can adopt hot water of 80-95 DEG C in a factory, waste heat of low-temperature process materials or low-pressure steam is used as a heat source, so that the steam consumption at the tower bottom of the depropanizing tower is saved, and the energy consumption of the device is reduced.

The invention discloses a winnowing impurity removal and incineration disposal device for industrial solid waste. The problems that at present, no mature solid waste coupling incineration boiler can realize long-period treatment operation of industrial solid wastes, and the solid wastes are prone to being coked due to metal impurities are solved. The winnowing impurity removal and incineration disposal device comprises a solid waste bin (1), an air separator (3), a coal bucket (9), a fluidized bed incinerator (10), a cyclone separator (11), a material returning device (12), a flue vertical shaft (13), a dust remover (15) and a chimney (16). The solid waste bin is connected with a solid waste inlet in the lower part of the air separator; a gas-solid outlet of the air separator is connected with a solid waste inlet of the lower conical section of the fluidized bed incinerator; and a smoke outlet in the upper part of the fluidized bed incinerator is connected with a smoke inlet of the cyclone separator, a coarse ash outlet is formed in the bottom of the cyclone separator and connected with an inlet of the material returning device, and an outlet of the material returning device is connected with a material returning opening formed in the lower conical section of the fluidized bed incinerator. The winnowing impurity removal and incineration disposal device is used for winnowing impurity removal and incineration treatment of industrial solid waste.

The invention provides a separation device for preventing coking at the bottom of a depropanization tower of a catalytic gas fractionation device. The separation device comprises a high-pressure depropanization tower and a low-pressure depropanization tower. An inlet pipeline is arranged in the middle of the high-pressure depropanization tower, a first tower top gas phase delivery pipeline is arranged at the top of the high-pressure depropanization tower, and a first tower top condenser and a first tower top reflux tank are sequentially arranged on the first tower top gas phase delivery pipeline in the gas phase flowing direction. A high-low-pressure double-tower depropanization process is adopted, hot water of 80-95 DEG C in a factory, waste heat of a low-temperature process material or low-pressure steam is adopted as a heat source at the tower bottom, so that the operation temperature of the tower bottom of the depropanization tower is effectively reduced, and the problem that the tower bottom of the depropanization tower is coked and blocked is fundamentally solved; the problems of reduced processing load and unplanned shutdown of the catalytic gas separation device caused by coking and blockage of the tower bottom of the depropanization tower are avoided; and meanwhile, the steam consumption at the bottom of the depropanization tower is reduced, and the energy consumption of the device is reduced.

The invention provides a furnace end structure capable of avoiding coking. The furnace end structure is characterized in that a furnace end inner container is arranged in a furnace end shell, a cavity formed between the outer side wall of the furnace end inner container and the inner side wall of the furnace end shell is a combustion-supporting chamber, and the combustion-supporting chamber communicates with an air inlet pipe; air holes are formed in the side wall of the furnace end inner container, and the furnace end inner container communicates with the combustion-supporting chamber; a first fuel through hole and a second fuel through hole are formed in the bottom of the furnace end inner container and the bottom of the furnace end shell respectively, a gap surrounding a spray head by a circle is formed between the spray head and the second fuel through hole, and fuel sprayed out of the spray head enters the furnace end inner container through the first fuel through hole and the second fuel through hole; and the spray head is connected with the furnace end shell through a fixing piece. The spray head is separated from the furnace end inner container and the furnace end shell, so that the spray head is not in contact with the furnace end inner container and the furnace end shell; and after the furnace end structure is used, high temperature on the furnace end inner container and the furnace end shell cannot be conducted to the spray head, meanwhile, fuel located in the spray head and on the surface of the spray head cannot be catalyzed by the high temperature, and the problem that the spray head is coked and blocked is avoided.