39results about How to "Low regeneration cost" patented technology

A processing time required for regeneration of a layer transferred wafer is reduced and the regeneration cost is lowered, while a removal amount at the regeneration is decreased the number of regeneration times is increased. A main surface of a semiconductor wafer (13) has a main flat portion (13d) and a chamfered portion (13c) formed in the periphery of the main flat portion (13d), an ion implanted area (13b) is formed by implanting ions only into the main flat portion (13d), a laminated body (16) is formed by laminating the main flat portion (13d) on a main surface of a support wafer (14), and moreover, the semiconductor wafer (13) is separated from a thin layer (17) in the ion implanted area (13b) by heat treatment at a predetermined temperature so as to obtain a thick layer transferred wafer (12), which is to be regenerated. The main flat portion (13d) of the semiconductor wafer (13) is formed to have a ring-shape step (13e) protruding from the chamfered portion (13c), and the semiconductor wafer (13) is separated from the thin layer (17) on the whole surface of the ion implanted area (13b) so that no step is generated in the periphery thereby to obtain the layer transferred wafer (12).

The invention relates to an in-situ regeneration method of an ammonium sulfate poisoning denitration catalyst and belongs to the technical field of an industrial denitration catalyst. The in-situ regeneration method comprises the following steps: (1) when the concentration of nitrogen oxide in outlet flue gas of an SCR (Semiconductor Control Rectifier) main reactor is close to an emission limit value, switching the flue gas to an SCR reserved reactor; (2) introducing hot gas flow into the SCR main reactor and decomposing an ammonium sulfate layer deposited on the surface of the catalyst under the action of the hot gas flow; continuously introducing the hot gas flow for 1 hour to 8 hours to finish regeneration of the denitration catalyst; (3) switching the flue gas back to the SCR main reactor and continually carrying out a denitration reaction. Under the action of the hot gas flow, ammonium sulfate is decomposed into ammonia gas, sulfur trioxide and water steam and is removed along the flowing of the hot gas flow, so that the denitration performance of the catalyst can be recovered. The in-situ regeneration method of the ammonium sulfate poisoning denitration catalyst has the advantages of simplicity in operation, short regeneration time, low regeneration cost, safety and environmental friendliness, high denitration efficiency of the regenerated catalyst, and no changes of the strength and pore structure of the catalyst.

Functionalized metal-organic framework adsorbents with ligands containing basic nitrogen groups such as alkylamines and alkyldiamines appended to the metal centers and method of isolating carbon dioxide from a stream of combined gases and carbon dioxide partial pressures below approximately 1 and 1000 mbar. The adsorption material has an isosteric heat of carbon dioxide adsorption of greater than −60 kJ/mol at zero coverage using a dual-site Langmuir model.

An ion exchange process for preparing glycose features that multiple cationic resin columns are parallelly connected into a group, multiple anionic resin columns are parallelly connected into a group, and both groups are connected via buffer tank and pump. Its advantages are regeneration of any resin column without stopping production, low cost for regeneration and saving resin by 30%.

The invention discloses preparation and application of a nitrate treatment agent. The preparation method includes: taking cotton as the template, using coprecipitation process to synthesize biomorphiczinc titanium iron ternary hydrotalcite, and conducting roasting in a muffle furnace so as to obtain the nitrate treatment agent. The invention also provides application of the nitrate treatment agent prepared by the method in treatment of nitrate wastewater. The nitrate treatment agent prepared by the method has good adsorption effect on nitrate and is easy to separate, and has simple and feasible regeneration method, thus having broad application prospects in the field of nitrate wastewater treatment.

The present invention features that electric dialysis membrane is used to eliminate the inorganic impurities and miniature amount of organic impurities in water solution of epsilon-caprolactam, that is, water solution of epsilon-caprolactam of 5-90 wt% concentration is made to pass through electric dialysis membrane at 0-150 deg.c. The said method is used to replace ion exchange process for refining caprolactam and can reduce greatly the conductivity and extinction value of water solution of epsilon-caprolactam and eliminate ammonium radical, acid radical and other ions and miniature amount of organic impurities in water solution of epsilon-caprolactam. s

The invention provides a device for regenerating spherical hydroxyapatite for defluorination. The device comprises a defluorination reactor (1), a steam supply device (2), a steam generation device (3) and a water softener (4), wherein the steam supply device (2) is arranged at the bottom of the defluorination reactor (1); and the steam supply device (2), the steam generation device (3) and the water softener (4) are connected sequentially. According to the device for regenerating spherical hydroxyapatite for the defluorination, spherical hydroxyapatite is regenerated in a mode that steam is used for heating; the device has the characteristics of rapidness and high efficiency; and furthermore, the regeneration effect is improved greatly.

A composite regenerant of resin used in treating water contains sodium sulfate (3.5-6 wt portions), sodium chloride (3-6), ammonium chloride (0-0.9), complexing agent (0-0.08) and surfactant (0-0.08). Its advantages are less consumption (decreased by 10%), high regeneration effect and the quantity of soft water to be treated, low Cl content in discharged water, and proper basicity of water in boiler.

The invention discloses a segmental oil gas absorption recovering method, which comprises the following steps of: absorbing oil gas at normal temperature with a method for recovering oil gas through at least two sections; and absorbing at a low temperature, wherein a medium-temperature absorption section of which the absorption temperature is between normal-temperature absorption and low-temperature absorption is selectively formed between a normal-temperature absorption section and a low-temperature absorption section; and a low-temperature absorption temperature is 3-8 DEG C. Due to the adoption of the method disclosed by the invention, oil gas recovery rate is very high and is about 99 percent, tail gas can be discharged within controlling indexes of a national standard, and remarkable environmental benefit and economic benefit can be achieved; and a recovery method for segmentally and gradually absorbing is designed according to respective absorption characteristic of a normal-temperature absorption method and a low-temperature absorption method, so that energy consumption is lowered, and energy is saved.

This is the room temperature regeneration method of the catalyst for noble metal dehydrogenization by carbamide. Adopt 3 - 15wt% complex compound watery solution containing ammonium ion or ammonia, at 5 - 80 Deg. C, soak out the poison produced on the surface of deactivated heavy metal catalyst in carbamide dehydrogenization. The volume proportion of soaking solid and liquid is 1 : 2.5 - 5, soaking time is 4 - 8 hours, after get out the catalyst, wash over three times with distilled water or deionized water, then lay at 110 - 120 Deg. C to dry, so it can achieve the purpose of renewing activeness and reuse. Compared with the present high temperature hydrogen deoxidizing regeneration technology, the invention has following advantages: needn't hydrogen source; needn't operate at 500 - 600 Deg. C high temperature, and can be operated at room temperature of 5 - 80 Deg. C; can very remarkably save energy waste, needn't regeneration system and electric heating device; its operation is simple, has no security hidden trouble, and can save regeneration time; the regeneration expense can be saved by 90%; after regenerated, the quality of catalyst can be ensured.

A compounding-complexing regenerating agent for the mixture of used and waste asphalt is prepared from the rejected materials of oil refinery, which are rich in aromatic component and colloid and include the oil extracted from furaldehyde, asphalt extracted from propane, the oil slurry thrown out during catalytic cracking, nitrogen dregs generated by denitriding furaldehyde and the third or the fourth side-cut fractional oil of cycloalkyl crude oil, through respectively dewatering and extracting, and selective mixing.

The invention provides a regeneration technology of a hydrogen-generation adsorbent. A hydrogen-generation operation system is removed from a pretreater with an inactive adsorbent, and other pretreaters of the operation system operate normally; superheated steam generated by a power plant are treated to be regenerative steam, then the regenerative steam is uninterruptedly fed into the pretreaterfrom the top of the pretreater, the regenerative steam regenerates the adsorbent in the pretreater and then is discharged from the bottom of the pretreater, and after the adsorbent is regenerated to be qualified, feeding of the regenerative steam is stopped; hot regenerative gas and cold regenerative gas generated by the operation system are introduced from the top of the pretreater, the hot regenerative gas passes through the interior of the pretreater to remove moisture of the adsorbent, and an adsorption tower with the moisture being removed is cooled to the operation temperature of the adsorption tower by the cold regenerative gas; and the adsorption ability of the pretreater is restored, and the pretreater enters a stand-by pretreater or is merged into the operation system. Accordingto the regeneration technology, the adsorbent in the pretreater is regenerated through the high-temperature steam of the power plant, regenerative desorbed gas generated by the operation system coolsthe pretreater and then is fed to a boiler of the power plant to be subjected to blending combustion, the regeneration cost is saved, and waste heat of the power plant and the waste regenerative desorbed gas are utilized in a mode of turning waste into wealth.

The invention belongs to the technical field of fat or grease oil refining, and discloses a production method of functional walnut oil rich in biological organic selenium. The production method comprises the following steps: selecting mildew-free walnuts, removing shells of the walnuts by using a shell removing machine, conveying obtained walnut kernels with shells to a walnut kernel skin removingmachine to remove walnut kernel skins, and producing qualified high-quality refined walnut oil by using high-tech physical walnut oil squeezing equipment and high-tech physical refined oil refining equipment; under a sterile condition, adding biological organic selenium or biological nano-selenium into the refined oil in a 55-75 DEG C constant-temperature heating stirrer, and uniformly stirring;and bottling by using a filling machine, filling nitrogen and sealing to form the functional walnut oil rich in biological organic selenium. The qualified high-quality refined walnut oil is obtained,the taste and quality of the walnut oil are remarkably improved, and the impurity content of the walnut oil is greatly reduced; meanwhile, biological organic selenium or biological nano-selenium is added to form a new organic-selenium-rich functional walnut oil commodity which has market requirements and is beneficial to human health, and the quality and additional value of the walnut oil are improved.

A regenerating agent of sodium and ammonium ion resin is prepared from sodium chloride (4-6 wt.portions), sodium sulfate (1-3), ammonium chloride (1-4), complexing agent (0-0.2) and surfactant (0-0.2) and can be used for water processing to obtain soft water. Its advantages include less consumption of edible salt saved by 5-10%, low cost reduced by 10%, high quality of soft water, long service life of resin and low chlorine content in discharged water (reduced by 25%).