41results about How to "Low emission requirements" patented technology

The invention provides a low-NOx pulverized coal burner for a rotary cement kiln, which is characterized by effectively controllable NOx emission, low primary air volume, reasonable flame shape, flexible and convenient operation, wide regulation scope, strong coal quality adaptability, etc. The pulverized coal burner consists of four ring-shaped channels, namely an axial flow air channel (1), a rotational flow air channel (2), a coal air channel (3) and a central air channel (4) from outside to inside; the center of the burner is provided with a water-coal-slurry pipeline (5) and the outlet of the water-coal-slurry pipeline (5) is provided with a water-coal-slurry burner nozzle (7).

The invention relates to an air-storage engine, a pressurizing system and a method thereof, and an emission reducing system and a method thereof. The compressed air of the engine in the vehicle braking stage is recycled and stored in an air storage device; when the engine is cold-started, a secondary air source is provided by the air storage device to meet the requirement of low emission of vehicles; and when the vehicle works in the full throttle state, the air storage device is used for providing a high-pressure air source into the intake pipe of the engine to realize the transient pressurization and meet the power performance requirement of the vehicles. The emission reducing technique and the pressurizing technique realize a virtuous cycle of recycle, emission reduction, pressurizationand the like.

The invention relates to a piston with a Ti-doping diamond multi-layer thick heat-insulating film on the top face and a preparation method and application of the piston. The piston comprises a piston substrate, a transitional layer, n layers of TiC/DLC film layers and m buffer layers, wherein the outermost layer of the top face of the piston is the last TiC/DLC film layer. According to the preparation method of the piston, the transitional layer is prepared on the top face of the piston substrate; then the first TiC/DLC film layer is prepared; one buffer layer is formed on the first TiC/DLC film layer; the TiC/DLC film layers and the buffer layers are formed alternately, so that a middle layer is obtained, and then the last TiC/DLC film layer is prepared. According to the piston with the Ti-doping diamond multi-layer thick heat-insulating film on the top face has excellent abrasion resistance and thermal impact resistance and can meet the requirement of modern engines for high efficiency and low emission.

The invention discloses a novel coal gas phenol water treatment device, which comprises a coal gas producer, the coal gas outlet of which is in connection with the inlet of a dust collector. A dust collector outlet is connected to a phenol water evaporator, the outlet of which is in connection with the inlet of a coal gas cooler. The outlet of the coal gas cooler is connected to an oil-water separator, the phenol water outlet of which is in connection with the phenol water evaporator. The treatment device is characterized in that the lower end of the coal gas producer is provided with a water seal pipe, the lower end of which is positioned in a water seal tank, and the side wall of the water seal pipe is provided with an air inlet pipe. The phenol water outlet of the oil-water separator is connected to the phenol water evaporator and is then connected to a spraying nozzle on the side wall of the water seal pipe. Characterized by simple and practical structure, and low cost, the coal gas phenol water treatment device of the invention reutilizes the phenol water in coal gas production so as to meet the demand of reducing phenol water discharge and improve the discharge environmental protection standards of enterprises, thus both being in line with the environmental protection requirements of production and reducing the sewage treatment cost of enterprises.

The invention relates to a PM 2.5 agglomerating device. The PM 2.5 agglomerating device comprises a smoke channel and an electric dust remover. The smoke channel comprises a vertical segment, an elbow segment and a horizontal segment. The horizontal segment is divided into a first treating cavity and a second treating cavity. The elbow segment is provided with a separator. Coarse dust particles and fine dust particles in the smoke channel are automatically separated through inertia force. The other end of the horizontal segment is provided with a mixing device, and the horizontal segment is connected with a turbulent mixing agglomerating device which is connected with the electric dust remover. The PM 2.5 agglomerating device has the beneficial effects that under the action of coulomb force and adhesive power, the fine dust particles are agglomerated the first time in the first treating cavity, the primary agglomerated fine dust particles and the coarse dust particles with positive charges enter the mixing device to be agglomerated the second time, agglomerated particles are formed and enter the turbulent mixing agglomerating device to be subjected to turbulent mixing, SO3 in the smoke is effectively condensed and adsorbed, and the particle agglomeration effect is further improved.

The invention discloses an ultra-low emission technology and a complete set of equipment for pollutants in flue gas from a garbage power generating boiler. An SDA reactor, a bag-type dust collector, afirst adsorption tank, a regeneration tank and a gas-liquid separator are sequentially connected, the gas-liquid separator is connected with a neutralization tank and an oxidation decomposition towercorrespondingly, the oxidation decomposition tower is connected with a second adsorption tank, flue gas enters the SDA reactor, dry injection is conducted, the bag-type dust collector absorbs a largeamount of acid and adsorbs dust in the flue gas, and obtained gas enters into the first adsorption tank, the regeneration tank continues to absorb heavy metals, dioxins and oxidized NOx in the flue gas, and adsorption and regeneration are alternately performed. Regenerated gas enters the gas-liquid separator to separate gas and liquid, and the obtained liquid flows into the neutralization tank and reacts with sodium alkali or ammonia water in the neutralization tank, the gas enters the oxidation decomposition tower and enters the second adsorption tank after oxidation, purified smoke obtainedby two-stage adsorption is emitted, regenerated gas after the second stage adsorption also returns to the gas-liquid separator for secondary oxidation and absorption until emission standards and ultra-low emission requirements are met.

The invention relates to a gasoline steam purifying device with a flow returning function. The gasoline steam purifying device with the flow returning function comprises an upper cover, an impeller and a base body, wherein the upper cover is mounted at the upper end of the base body; a cavity is formed between the upper cover and the base body; a motor is mounted in the middle of the base body; a rotating shaft of the motor vertically extends into the cavity and is connected with the impeller; a through hole is vertically formed in the rotating shaft of the motor; the upper end of the through hole communicates with the impeller; a part, which is positioned below the motor, of the base body is sealed by a sealing cover; the lower end of the through hole communicates with a gap between the motor and the sealing cover; an air inlet is vertically formed in the cavity and corresponds to a position above the center of the impeller; and an air outlet which is arranged in the tangential direction of the impeller is formed in a side wall of the cavity. Rotation of the motor is controlled so as to drive the impeller to rotate, and therefore, pressure difference is formed. Oil steam is delivered into a manifold inlet and is prevented from being discharged in air, and the requirement of emission reduction is met.

The invention is the outer cyclone inner direct flow main combustor device and belongs to the combustor device of boiler. The purpose of the invention is to produce the backflow area and the stable combustion. One device of the invention is to evenly arrange the delivery blades between the primary air diverting tube and the delivery tube, and the inside diameter of the delivery tube is as 0.5-0.7 times as the diameter of the primary air diverting tube. The other device is to evenly arrange the delivery blades in the inner chamber of the primary air diverting tube, and the axial height of the delivery blades is as 0.1-0.5 time as the semi-diameter of the primary air diverting tube. The invention through changing the opposite angles, the number, the length and the height of the delivery blades and the lengths and the section of the delivery tube to change the intensity and the size of the cyclone amount to adapt the characteristics of different fuels and ensure the stability and economy of the boiler combustion. The invention has simple structure and convenient equipment.

The invention provides an exhaust gas treatment device, a control method and control device thereof, a storage medium, a treater, an exhaust gas treatment system and a mobile carrier. The treatment device comprises MFC equipment, DPF equipment and SCR equipment which are arranged on an exhaust pipe in sequence. A first reducing agent spray nozzle is arranged on the part, on the upstream of the MFCequipment, of the exhaust pipe. A second reducing agent spray nozzle is arranged on the part, between the DPF equipment and the SCR equipment, of the exhaust pipe. The MFC equipment belongs to a multifunctional catalytic device and has the DOC function and the SCR function. The exhaust pipe belongs to an exhaust line of an engine. According to the treatment device, the DOC and SCR dual functionsare integrated in the MFC equipment, the structure of the exhaust gas after-treatment device is simplified, and the SCR conversion efficiency is improved; the exhaust gas treatment device achieves theDOC ignition function and can also reduce emissions of NOx by replacing DOC with MFC; and accordingly, the whole after-treatment device is simplified in arrangement and saves space.

The invention belongs to the technical field of cutting equipment, and particularly relates to an environment-cleaning dust-free table type cutting machine. The environment-cleaning dust-free table type cutting machine comprises a shell and a cutting workbench arranged on the shell, wherein a saw opening is formed in the cutting workbench; an air suction bin is arranged below the cutting workbench; the saw opening serves as an air inlet of the air suction bin; an air outlet of the air suction bin is formed in the air suction bin; a horizontal centrifugal separator is installed at the air outlet of the air suction bin; a separator ash falling port is formed in the rear end of the horizontal centrifugal separator; a first ash collecting box is arranged at the separator ash falling port; a separator air outlet is formed in the front end of the horizontal centrifugal separator; a filter cylinder is arranged at the separator air outlet; and a negative pressure fan is installed at an air outlet of the filter cylinder. According to the environment-cleaning dust-free table type cutting machine, the dust-gas pre-separation of dust-containing airflow can be realized, not only can the dust-free cutting be realized, but also the long-term stable operation of the cutting machine can be guaranteed, and the environment-cleaning dust-free table type cutting machine is small in size and convenient to carry and use.

A method for making the bottom of a dust-removing filter bag. The filter material at the port at the end of the cylindrical bag body (1) to be made into the bag bottom, including the cylindrical filter material connected and extended to the filter material of the bag body, is tightly Gather into a pinch to form an airtight bag bottom. At the same time, it provides the corresponding special equipment for making the bottom of the bag, as well as the corresponding buckle and seal the bottom of the bag.

The invention relates to a gasoline steam purification device utilizing an electric magnetism-generating transmission principle. The gasoline steam purification device utilizing the electric magnetism-generating transmission principle comprises a volute, an impeller and a shell. The upper end of the shell is connected with the volute. A cylindrical partition plate is arranged in the middle of the inner bottom of the shell. A stator is installed inside the cylindrical partition plate. The magnetic impeller arranged coaxially with the stator is installed in the position, above the cylindrical partition plate, of the volute in a rotating mode. An air intake pipe is vertically arranged in the position, corresponding to the center of the magnetic impeller, of the upper end of the volute. An air exhaust pipe is arranged on the side wall of the volute in the tangent direction of the magnetic impeller. A bottom cover is installed at the bottom of the shell. A PCB is installed between the bottom cover and the shell. A magnetic field is generated inside the gasoline steam purification device through the electric magnetism-generating principle, the magnetic impeller is driven to rotate by the magnetic field, and accordingly pressure difference is formed; and oil steam collected by a carbon tank is fed into an air intake manifold and prevented from being exhausted into air, and the requirement for emission reduction is met accordingly.

A welded high-strength wheel is composed of a rim and a spoke, and is characterized in that a groove bottom of the rim forms an included angle of 1 degree relative to the horizontal line, a skirt of the spoke forms an included angle of 1 degree relative to the horizontal line, and the groove bottom of the rim and the skirt of the spoke are welded together.

The invention discloses a pressurized multi-stage absorption, condensation and adsorption module combined type organic waste gas recovery method, which is characterized in that organic waste gas passes through a pretreatment module, enters an absorption/desorption module or a condensation module, and finally enters the adsorption/desorption module for up-to-standard emission. An adsorbent is desorbed and regenerated through vacuum pumping after adsorption penetration, and desorbed gas and pretreated gas are mixed and returned to the absorption/desorption module or the condensation module. According to the pressurized multi-stage absorption, condensation and adsorption module combined type organic waste gas recovery method provided by the invention, respective advantages of absorption, condensation and adsorption are fully utilized, an optimal recovery process can be selected according to engineering requirements, module combined type multifunctional recovery is realized, the application range is wide, and the goals of efficient recovery, operation cost reduction and ultralow-concentration emission are achieved.