51results about How to "Improve regeneration quality" patented technology

The invention relates to the field of preparation for activated carbon, and in particular relates to an activated carbon regeneration device and method. The method comprises the following steps of feeding waste powdery activated carbon to a drying converter by using a feeding system, enabling the waste powdery activated carbon to pass through a carbon collector, a dust collector, a hopper and a charger, feeding dried powder into a boiling activation furnace, and activating the waste powdery activated carbon in the high-temperature boiling activation furnace; and enabling the formed powdery activated carbon and furnace gas to pass through a superheated steam heater in a pipeline, reheating steam, feeding the relatively high-temperature powdery activated carbon and furnace gas to a cyclone separator, and enabling the collected activated carbon to pass through a cooling feeder to be packaged or post-treated. According to the technical scheme, the activated carbon regeneration cost is low, the regeneration quality is high, a configured activated carbon drying and superheated steam boiling activation equipment system is reasonable in integral design, easy to run and environmentally-friendly, energy resources are recycled, the production cost is lowered, and the activated carbon can be automatically regenerated in a large scale.

The invention relates to a production line for regenerating wood based powdered activated carbon. The production line comprises a grinding and drying device, a cyclone seperation device, a high-temperature shaft kiln activation furnace and a cooling bag filtering device, wherein the grinding and drying device is used for heating, drying and mechanically grinding peat, the cyclone seperation device is used for separating out peat grains, the high-temperature shaft kiln activation furnace is used for reactivating the peat grains, the cooling bag filtering device is used for carrying out cooling temperature reduction on the activated peat, and the activated peat is led to pass through a bag filter and then is discharged, thereby the activated carbon is completely regenerated, the ignition lost rate is low, the regeneration cost is low, the regeneration quality is good, and the large-scale automation control production is realized.

The present invention relates to a method for deamination and denitrification of residential quarter sewage, belonging to the field of sewage treatment technology. It is characterized by that after the sewage is passed through anaerobic filter tank, contact oxidation tank and precipitation tank to obtain treatment, then sewage can upwards flow and be fed into two parallel modified zeolite adsorption regeneration columns to implement ammonia and nitrogen adsorption at twice successively, so that said invention can obtain high ammonia and nitrogen treatment efficiency. Said invention also provides the regeneration method of the above-mentioned zeolite adsorption regeneration column by using backflush process.

The invention relates to an ultrasonic device for cleaning a denitration catalyst. The device comprises an ultrasonic generator, one or more than one ultrasonic bars and a porous flange plate, wherein the ultrasonic generator is connected with the ultrasonic bars; the multiple ultrasonic bars are arranged in parallel; the ultrasonic bars are inserted into the holes of the denitration catalyst; each ultrasonic bar can be inserted into the hole of the denitration catalyst from one end or two ends of the denitration catalyst; and one end of each ultrasonic bar is connected with the porous flange plate. The device disclosed by the invention is good in cleaning effect, and the ultrasonic bars stretch into the interiors of the holes of the catalyst for cleaning; the ultrasonic energy distribution is uniform, and structural damage of the catalyst is avoided; and moreover, the ultrasonic energy emission is mainly performed in the radial direction, the pores are completely cleaned, and the catalyst is high in regeneration quality, stable and reliable.

The invention discloses an efficient double rotation regeneration device for foundry used sand. The efficient double rotation regeneration device for the foundry used sand comprises a vertically arranged sand cylinder, a rotating shaft arranged on the center axis of the sand cylinder, a first rotary motor coaxially connected to the top end of the rotating shaft, a transmission gear arranged at the position of the geometric center of the bottom of the sand cylinder, a second rotary motor in transmission cooperation with the transmission gear, and a sand cylinder support; first downwards-inclined crushing and stirring rods are arranged above the rotating shaft; the position, below the first crushing and stirring rods, on the rotating shaft is provided with spiral blades; the inner wall of the sand cylinder is provided with second downwards-inclined crushing and stirring rods; slide rails are arranged on the sand cylinder in a horizontal encircling manner; and slide grooves matched with the slide rails are arranged on the sand cylinder support. According to the efficient double rotation regeneration device for the foundry used sand, due to opposite rotation of the sand cylinder and the rotating shaft, the foundry used sand achieves sufficient friction, an inert membrane on the surface of the used sand is more effectively removed, the regeneration quality and efficiency of the used sand is improved, and regeneration of the used sand can be continuously performed.

The invention discloses a vacuum ink injection machine. The vacuum ink injection machine comprises a shell, a plurality of ink storage devices, a water storage device, a first temperature control device, an air inlet device, a second temperature control device, a vacuum tank and a controller. Any one ink storage device comprises an ink holder and a temporary storage tank, wherein a flow guide plate tilting downwards is arranged in the ink holder, the storage tank is arranged below the ink holder, a vent hole is formed in the top of the temporary storage tank, and the bottom of the temporary storage tank communicates with an ink inlet of an ink box through a second ink outlet tube, a multi-way valve, an ink inlet tube and an ink inlet connector. The water storage device comprises a water storage tank communicating with the ink inlet tube through the multi-way valve. The air inlet device comprises an air inlet tank which communicates with the ink inlet tube through the multi-way valve. An ink lead tube is arranged on the upper portion of the vacuum tank in a communicating mode and communicates with an ink outlet of the ink box through an ink lead connector. The vacuum ink injection machine has the advantages that ink can be re-injected into the ink box repeatedly, the ink injection amount is accurate, and the ink injection quality is high.

If a first reflection rate is defined as the reflection rate calculated from the quantity of reflected light obtained from the longest pit (P1max) or the longest space (S1max) in a first pit row, and a second reflection rate is defined as the reflection rate calculated from the quantity of reflected light obtained from the longest pit (P2max) or the longest space (S2max) in a second pit row, the first pit row is configured so that the first reflection rate is substantially the same as the second reflection rate.

The invention relates to the field of semiconductor devices, and discloses a method for performing semiconductor etching by using high-purity hexafluoroethane, which comprises the following steps of: drying hexafluoroethane raw material gas, introducing the dried gas into an adsorber with a special structure for adsorption and impurity removal, and sequentially performing liquefaction and rectification purification to obtain the high-purity hexafluoroethane, and after plasma is formed by etching gas containing high-purity hexafluoroethane, dry etching is carried out on the semiconductor substrate covered with the patterned mask. According to the invention, the adsorber with a special structure is adopted to perform adsorption and impurity removal on the hexafluoroethane dry gas, and the distribution uniformity of the dry gas in the adsorber can be improved, so that the adsorption and impurity removal effect is improved, the hexafluoroethane with higher purity can be obtained, and the influence of impurities in the hexafluoroethane on the performance of a semiconductor device is reduced; meanwhile, the adsorber can improve the distribution uniformity of regeneration gas, so that the regeneration period of the molecular sieve is shortened, and the regeneration quality is improved.

The reflectance calculated from the amount of reflected light obtained from the longest pit (P1max) or the longest gap (S1max) of the first pit string is set as the first reflectance, and the reflectance calculated from the maximum amount of reflected light from the second pit string When the reflectance calculated from the amount of reflected light obtained by the long pit (P2max) or the longest gap (S2max) is set as the second reflectance, the first pit string is formed so that the first reflectance is approximately the same as the second reflectance. same.

The invention provides a device and a method for pneumatically removing sands from a casting and recovering sands. A furnace body of a sand removing furnace is divided into a boiling pressure room and a fluidized bed room by a closed partition board, a plurality of high-temperature hot air nozzles are arranged in the fluidized bed room and are connected to a combustion room outside the furnace body, and the combustion room is further connected with a combustion air pipe and a first high-pressure fan; the boiling chamber room is communicated with a second high-pressure fan, and a plurality of air nozzles are arranged on the closed partition board towards the fluidized bed room; an air cooling room is provided with a closed plate with a plurality of blowing nozzles, the closed plate is used for dividing the air cooling room into a lower air pressure room and an upper grading room, the air pressure room is connected with a third high-pressure fan, the side wall of the grading room is provided with a door and is communicated to a sand outlet, the grading room is communicated with the fluidized bed room, and the top of the grading room is provided with a door and is connected with a dust remover through a dust removing pipeline. According to the device and the method for pneumatically removing the sands from the casting and recovering the sands, the working processes of shaking out the sands, removing the sands and recovering the used sands can be carried out in a centralized manner.

The invention discloses a natural gas triglycol dehydrating process, and belongs to the field of natural gas chemical industry. The process comprises the following steps: pre-purifying, drying, cooling, removing impurities, rectifying and concentrating. The natural gas triglycol dehydrating process has the beneficial effects that the natural gas dehydrating effect is good, triglycol consumption issmall, triglycol regenerating efficiency is high, evaporation loss is less, and investment and operation cost is low.

The invention belongs to the technical field of casting, and particularly relates to a graphite mold for sand-coated molding and application of the graphite mold. The method comprises the following steps: uniformly mixing graphite chips with an adhesive, filling a female mold with the mixture, tamping, heating to 110-180 DEG C, preserving heat for 40-60 minutes, and drawing after thermocuring molding, so as to obtain the graphite mold for sand-coated molding, and the graphite mold is applied to preparation of a graphite mold water-glass-coated sand casting mold. The graphite scraps are wide in source and low in price, the investment of a sand-coated molding production line is reduced by replacing an iron mold with a graphite mold, and the graphite mold is stable in performance after being heated. According to the sand-coated molding technology for composite blowing hardening of the sodium silicate-bonded sand, the over-blowing defect of the sodium silicate-bonded sand is avoided, the addition amount of the sodium silicate is low, the collapsibility is good, the strength is high, and the gas forming amount is small.

The invention discloses a multi-layer heating device for heating asphalt pavement milling material, which comprises a vehicle frame, wheels are arranged at the bottom of the vehicle frame, and a heating box is installed above the vehicle frame; the interior of the heating box is installed from top to bottom There is a multi-layer conveying device, which is used to transport the asphalt mixture for sufficient heating; a scraper feeder is installed near the road surface in front of the frame, and the scraper feeder lifts the asphalt mixture on the road surface through multiple scrapers The machine is transported to the feed inlet in front of each layer of conveying device; the rear of the frame is equipped with a hot blast stove and a circulating fan through the mounting frame, and the rear of the heating box is installed for collecting the air that is output through the outlet. A hopper for heated asphalt mixture; a mixing tank is installed at the lower part behind the vehicle frame, and the lower part of the hopper is connected with the feeding port of the mixing tank.