39results about How to "Solve easy coking" patented technology

The invention provides high-protein lactose-free milk and a preparation method thereof. The raw materials of the high-protein lactose-free milk are prepared from the following components in percentage by weight: 0.5-1% of milk protein concentration, 5.0-5.5% of desalted separated whey proteins, 2.5-3.5% of watery cream and the balance of water, totaling 100%, wherein the percentage by weight is that relative to the total mass of the raw materials. The preparation method comprises the following steps: (1) mixing the milk protein concentration, the desalted separated whey proteins and water, standing and filtering by virtue of a ceramic membrane to obtain slurry A; (2) carrying out pasteurization on the watery cream to obtain slurry B; (3) mixing the slurry A and the slurry B; (4) homogenizing; and (5) cooling and filling. According to the ceramic membrane filtration process, the problem that a high-protein product is easily coked on tubular or platy sterilization equipment is solved, and the final product helps solve the problem that the common milk drank by the diabetic patient is adverse to glucostasis and has the function of controlling blood glucose of the type 2 diabetic patient in an assistant manner.

The invention relates to a waste polyester high-value circulation reuse technique, and in particular to a method for preparing a high-quality melt through alcoholysis of a waste polyester textile with ethylene glycol. The method for preparing the high-quality melt through alcoholysis of the waste polyester textile with ethylene glycol comprises the following steps: adding ethylene glycol which accounts for 1-8% of the mass of a raw material into a screw extruder for mixing melt extrusion, and feeding the material into a hardening and tempering device, wherein the melt viscosity of the melt extruded from the screw extruder is 0.40-0.50dl / g; the melt viscosity of the melt discharged from the hardening and tempering device is 0.620-0.685dl / g. Due to adoption of a proper amount of the ethylene glycol, the melt viscosity can be improved, meanwhile, the problems that a filter is short in cycle and a vacuum system is large in maintenance workload can be effectively solved, the production cost can be lowered, and meanwhile, the additional value of a product can be increased.

The invention discloses a laser detection type combustion chamber temperature detection device, which comprises a supporting frame, a decoking device, a soot blowing and cooling device and a laser detection device. The supporting frame comprises a seamless steel pipe; one end of the decoking device is arranged in the seamless steel pipe and capable of axially and freely sliding; the decoking device is provided with a forked head portion which extends out of the front end of the supporting frame during decoking; the soot blowing and cooling device and the laser detection device are sequentiallyfixed to the rear end of the supporting frame; one end of the soot blowing and cooling device is communicated with the seamless steel pipe while the other end is sealed through a windproof filter, and the soot blowing and cooling device is provided with an air inlet. During laser detection, laser emitted by the laser detection device sequentially penetrates the soot blowing and cooling device andthe supporting frame to enter a to-be-detected combustion chamber or sequentially penetrates the supporting frame and the soot blowing and cooling device to be received by the laser detection device.By arrangement of the supporting frame, the decoking device and the soot blowing and cooling device, problems of high temperature, high dust and proneness to coking of a viewport in implementation ofa TDLAS (tunable diode laser absorption spectroscopy) system is effectively solved.

The anti-coking device at the high-temperature pyrolysis gas inlet of the oil-gas quencher, the anti-coking device is a hollow air intake pipe, and its technical key points are: an anti-coking steam ring pipe is arranged concentrically at the oil and gas outlet of the air intake pipe, and steam holes are arranged on the anti-coking steam ring pipe , from the oil and gas outlet, the distribution pipe and the distribution ring pipe are arranged sequentially from top to bottom, the anti-coking steam ring pipe and the distribution ring pipe are connected through the distribution pipe, and the distribution ring pipe is provided with a steam inlet. The advantages of the present invention: After the existing quenching equipment is transformed, the problem of easy coking at the inlet of the quenching equipment is solved, and the effect is remarkable; the partial pressure of hydrocarbons is reduced, and the yield is improved; no regular shutdown and maintenance is required, the production cycle is prolonged, and the production rate is improved. Improve production efficiency, reduce production and maintenance costs.

The invention belongs to the technical field of petrochemical cracking, in particular relates to an ultrasonic quenching device capable of online decoking, and further discloses a cracking quenching process and an online decoking process performed by the ultrasonic quenching device. The ultrasonic quenching device of the present invention combines ultrasonic technology with quenching technology to form a combination device of ultrasonic and quenching device, which not only has the function of ordinary quenching cooler, but also uses ultrasonic technology to solve the problem of easy coking at the entrance of quenching equipment, and breaks through traditional quenching In order to avoid the disadvantages of only transporting gaseous materials, the hot water is introduced into the tube side of the quencher, and the ultrasonic distributor is used to efficiently transmit the ultrasonic wave to the coke layer of the tube side of the quencher. The hot water weakens the van der Waals force of the coke layer. The coke layer is gradually decomposed into particles and falls off, realizing online decoking treatment. It can be widely used in thermal cracking process of petrochemical industry.

he invention provides a method for producing olefin. The method comprises step of placing cracking raw materials in a cracking furnace tube for cracking, so as to obtain the olefin. The cracking furnace tube comprises a cracking furnace tube matrix, and an inert coating attached to an inner wall of the cracking furnace tube matrix. The inert coating can prevent contact between coke and cracking furnace tube matrix, but does not react with the cracking raw materials and / or cracking products; the inert coating has a porous structure with average pore radius of 0.5-15nm, and specific surface area from 1m<2> / g to less than 150m<2> / g; the inert coating can also catalyze reaction between coke and water vapor; or the inert coating surface is attached by an active catalytic layer capable of catalyzing reaction between coke and water vapor; or the inert coating can catalyze reaction between coke and water vapor, and is also attached by an active catalytic layer capable of catalyzing reaction between coke and water vapor. The method for producing olefin provided by the invention has simple operation and good anti-coking performance.

The invention relates to the technical field of waste incineration power generation, and discloses a waste incinerator. The waste incinerator comprises a drying area, a main combustion area and a burnout area, wherein the main combustion area comprises a hearth, the hearth comprises a rear wall and two side walls which are connected with one another; the rear wall and the two side walls are all heat insulation furnace walls, new water cooling walls covered with the heat insulation furnace walls are arranged on the inner side walls of the heat insulation furnace walls; and the invention furtherdiscloses a construction method of the waste incinerator. According to the waste incinerator and the construction method, the problems that the furnace wall near the main combustion area of an existing waste incinerator is easy to coke is effectively solved.

The invention relates to a method and system for preparing low-carbon olefins. The method is carried out as follows: the crude oil is sent to the first tube group of the convection section of the cracking furnace for preheating, and then vapor-liquid separation is performed to form a first vapor phase and a first liquid phase. phase; the first liquid phase is sent to the first tube group of the convection section for preheating, and the preheated first liquid phase is distilled to form a tower top fraction, a middle distillate and a tower bottom fraction; the tower bottom fraction is subjected to hydroprocessing , to obtain circulating hydrogen, light components after hydrogenation and heavy components after hydrogenation; mix the top distillate with the middle distillate, mix with the first vapor phase, and light components after hydrogenation, and send them to the cracking furnace for cracking to obtain a low carbon olefins. The present invention adopts the combination of cracking furnace, vapor-liquid separation unit, distillation unit and hydroprocessing unit, which can effectively solve the problems that the heavy cracking raw material cannot be fully gasified in the convection section and is easy to coke in the radiation section and the quenching section.

The invention discloses a nozzle rod part, a fuel nozzle and an aero-engine gas turbine, relates to the technical field of aero-engines, and is used for solving the problems of easy coking of fuel of the nozzle rod part and short service life of the fuel nozzle in a working state in a fuel supply scheme of using a main fuel way as a discontinuous working fuel way and using a secondary fuel way as a continuous working fuel way in the prior art. The nozzle rod part comprises a rod body, a main fuel way and a secondary fuel way. The secondary fuel way is arranged at the periphery of the main fuel way; a fluid in the main fuel way and a fluid in the secondary fuel way can exchange heat; the fluid entering from a fluid inlet of the main fuel way can flow out through a fluid outlet of the main fuel way; and the fluid entering from a fuel inlet of the secondary fuel way can at least experience once of the process of returning to a position near the fluid inlet of the main fuel way from a position near the fluid outlet of the main fuel way in the secondary fuel way, and then flows out by the fuel outlet of the secondary fuel way. The nozzle rod part can prevent the fuel coking problem, and can prolong the service life of the fuel nozzle.

A high-efficiency coke-free briquette boiler, including a furnace body, a furnace, a smoke chamber, a high-level water tank, a preheater and a dust collector. Including the outer furnace body, outer water jacket and inner smoke chamber; the furnace includes the combustion zone and the air chamber; the high-level water tank is respectively connected with the outer water jacket and the preheater; the preheater is connected with the water inlet pipe, and the preheater is connected with the inner and lower water jacket Connected; the inner and lower large water jackets are connected with the outer water jacket; the outer water jacket is connected with the outlet pipe; a water level gauge and a water level controller are installed in the high water tank, which are respectively connected with the outer water jacket and the preheater. The present invention utilizes the design features of the water-cooled wall tube and the air chamber, so that there is sufficient air circulation in the furnace, the briquettes are fully burned, and a large amount of nitrogen oxides cannot be formed, which reduces the discharge of nitrogen oxides, reduces urban pollution, and The flame in the combustion area is scattered, and it also solves the problem of easy coking in traditional small hand-burning furnaces. It is an environmentally friendly, high-efficiency and energy-saving new boiler.

The invention relates to a waste polyester high-value circulation reutilization technique, in particular to a method for preparing a polyester spinning melt by removing polyurethane contained in a waste polyester textile through alcoholysis of ethylene glycol. According to the method for preparing the polyester spinning melt by removing the polyurethane contained in the waste polyester textile through the alcoholysis of the ethylene glycol, a waste polyester textile raw material contains the polyurethane, a raw material, in which ethylene glycol with 1% to 8% of the raw material mass is added, is fed to a screw extruder to be blended, melt and extruded, and the melt viscosity of melt from the screw extruder is 0.40 to 0.50 d1 / g; and then the material enters a hardening, tempering and viscosity regulation device, and the melt viscosity of the melt body discharged from the hardening, tempering and viscosity regulation device is 0.635 to 0.685 d1 / g. Due to an alcoholysis manner, the influences on the viscosity, flowing property, fiber saturation property and drafting property of a polyester melt body, and series problems that vacuum pipes and tubular heat exchangers are easy to block due to the existence of spandex (polyurethane) are reduced.

The invention relates to a method and system for preparing low-carbon olefins from crude oil. The method is carried out as follows: the crude oil is sent to the first tube group in the convection section of the cracking furnace for preheating, and then vaporized to form the first vapor phase and the second steam phase. One liquid phase; the first liquid phase is sent to the first tube group of the convection section of the cracking furnace to be preheated and then distilled to form an overhead fraction, a middle fraction and a bottom fraction; the overhead fraction, the middle fraction and the first After the steam phase is mixed, it is sent to the second tube group of the convection section of the cracking furnace, and after being heated to the crossing temperature, it is sent to the radiation section for cracking to obtain cracked gas; the bottom fraction is subjected to deep catalytic cracking to obtain deep catalytic cracking gas, which is then combined with the The cracked gas is separated to obtain light olefins. The invention adopts cracking furnace to cooperate with vaporization treatment unit, distillation unit and deep catalytic cracking unit, which can effectively solve the problems that heavy cracking raw materials cannot be fully gasified in the convection section and are easy to coke in the radiation section and the quenching section.

The invention relates to the technical field of waste incineration power generation, and discloses a waste incinerator. The waste incinerator comprises a drying area, a main combustion area and a burnout area, wherein the main combustion area comprises a hearth, the hearth comprises a rear wall and two side walls which are connected with one another; the rear wall and the two side walls are all heat insulation furnace walls, new water cooling walls covered with the heat insulation furnace walls are arranged on the inner side walls of the heat insulation furnace walls; and the invention furtherdiscloses a construction method of the waste incinerator. According to the waste incinerator and the construction method, the problems that the furnace wall near the main combustion area of an existing waste incinerator is easy to coke is effectively solved.

The invention relates to a fuel oil burner for an incinerator. The fuel oil burner comprises a burner shell, a flame tube, an oil gun assembly, an ignition needle assembly, a diffusion disc, an air door adjusting mechanism, an oil circuit module and an ignition transformer, wherein an openable and closable cooling air inlet is arranged on one side of the front end of the burner shell; the diffusion disc is fixedly arranged at the front end of the oil gun assembly and forms a whole with the oil gun assembly; and the fuel oil burner further comprises an oil gun assembly advancing and retreatingdriving mechanism, and the oil gun assembly advancing and retreating driving mechanism is connected with the oil gun assembly and then drives the whole oil gun assembly to advance and retreat so as todrive the diffusion disc to move between the flame tube and the cooling air inlet. The fuel oil burner has the beneficial effects that the problems in the prior art that an oil nozzle on the oil gunassembly is prone to coking and the diffusion disc is prone to being burned out are effectively solved, and therefore the service life of the fuel oil burner is ensured and the cost for enterprises issaved.