9results about How to "Increase gas volume" patented technology

The invention relates to the technical field of sludge anaerobic digestion, and discloses a sludge reduction anaerobic digestion method, which comprises: (1) adding calcium peroxide into dewatered sludge, and carrying out a hydrolytic acidification reaction to obtain pretreated sludge; (2) carrying out anaerobic digestion on the pretreated sludge, taking 24 hours as a cycle, and carrying out heat exchange treatment on the obtained inoculated sludge 3-5 cycles after sludge feeding; (3) adding sodium persulfate into the inoculated sludge, stirring and then carrying out ultrasonic treatment to obtain mixed sludge; and (4) carrying out anaerobic digestion on the mixed sludge. According to the invention, calcium peroxide is added to pretreat dewatered sludge, and sodium persulfate is added after anaerobic digestion is carried out for a period of time, so that the oxidability of refractory organic matters can be enhanced, the influence of generated free radicals on sludge floccules is enhanced, interaction is promoted, and the treatment effect is improved. Organic matters in the sludge particles are further degraded, and the biogas yield is obviously increased in the subsequent anaerobic digestion process.

The utility model discloses an air separating, cooling and dehumidifying device, which belongs to the technical field of air treatment and comprises an air filter, an air cooling dehumidifier and an air compressor. The outlet end of the air filter is connected with the inlet end of the air cooling dehumidifier, and the outlet end of the air cooling dehumidifier is connected with the inlet end of the air compressor; the air cooling dehumidifier comprises an outer shell, a cooler, a baffle plate and a dehumidification filter membrane, the cooler is arranged in the outer shell, the baffle plate is arranged at one end of the cooler, and the dehumidification filter membrane is arranged at one end of the baffle plate. According to the dehumidification and cooling device, rapid dehumidification and cooling can be achieved, the dehumidification and cooling efficiency is improved, air can be rapidly dehumidified and cooled in the environment with the high air humidity and the low outdoor temperature, and it is guaranteed that the whole process can be stably operated.

The utility model provides a workpiece clamping and holding device which comprises a driving piece driven by a movable driving device to lift up and down and move transversely. The clamping pieces are correspondingly connected with the two sides of the driving piece respectively, and the clamping pieces on the two sides are driven by a clamping driving device to clamp oppositely or open oppositely; the air bag is located between the clamping pieces on the two sides and connected with the driving piece, the air bag vertically extends, and the outer diameter of the air bag is smaller than the inner diameter of the through hole; and the extrusion pieces are arranged on the opposite sides of the clamping pieces on the two sides and correspond to the upper portions of the air bags. Through the additional arrangement of the air bag and the extrusion part, the clamping device not only clamps the outer wall of the workpiece through the clamping part, but also clings to the inner wall of the through hole through the lower part of the air bag extruded and bulged by the extrusion part, so that the contact area between the clamping device and the inner wall and the outer wall of the workpiece when the clamping device clamps the workpiece is greatly increased; and when the workpiece is heavy or needs to be transferred for a long distance, high-stability clamping and carrying of the workpiece can be achieved.

The invention relates to the technical field of flue gas denitration, in particular to an ammonia gas injection system suitable for SCR denitration of a gas turbine. According to the system, the liquid ammonia vaporization amount can be adjusted in real time according to the NOx content in flue gas emission, the two heat exchangers are connected in series, workshop low-quality steam is used as a liquid nitrogen vaporization heat source, the steam is changed into hot water after being subjected to heat exchange through the rear heat exchanger and then is changed into normal-temperature water after being subjected to heat exchange through the front heat exchanger, heat in the steam is fully utilized to the maximum extent, and the energy consumption is reduced. A heat exchanger tube pass outlet is provided with temperature and steam consumption self-control operation, it is guaranteed that ammonia gas does not carry liquid, and the accuracy of a back flow meter is guaranteed. A vertical shell-and-tube heat exchanger is selected as a back heat exchanger. A liquid level meter is arranged at a bottom tube pass inlet end socket to monitor medium which is not prone to vaporization to be discharged in time. An ammonia gas on-line analyzer is arranged in a closed room. If leakage occurs, the supply of liquid ammonia and ammonia gas is directly cut off; the problems that in the prior art, urea is decomposed into ammonia gas, a large amount of energy is needed, and potential safety hazards exist are solved.

The invention provides a preparation method of a silicon nitride waveguide, and relates to the technical field of semiconductors. The preparation method comprises the following steps: depositing a silicon oxide layer on the surface of a substrate; depositing a monocrystalline silicon layer with a preset thickness on the surface of the silicon oxide layer, wherein the preset thickness is any value in the range; photoresist coating, developing treatment and etching treatment are sequentially carried out on the monocrystalline silicon layer, so that the monocrystalline silicon layer with a preset horizontal distance is reserved on the surface of the silicon oxide layer from the edge to the center, and the preset horizontal distance is any one value ranging from 4 micrometers to 6 micrometers; and depositing a silicon nitride layer on the surfaces of the monocrystalline silicon layer and the silicon oxide layer, and sequentially carrying out developing treatment and etching treatment to prepare the silicon nitride waveguide. The stress matching degree between the silicon nitride layer and the silicon oxide layer in the silicon nitride waveguide is improved, the risk of stripping of the silicon nitride layer is reduced, and the product yield is improved.

The embodiment of the present invention discloses a gas impeller flowmeter and a gas flow metering method, which are invented to reduce the pulsation phenomenon caused by the instantaneous flow of the discharge. The gas impeller flowmeter includes more than two metering chambers; a impeller group is respectively provided in each metering chamber, and the more than two impeller groups are arranged in parallel; the more than two impeller groups are located in different relative metering positions in their respective metering chambers. The embodiment of the present invention is suitable for occasions for metering of fuel gas and other gases.

The invention relates to the technical field of pillows, in particular to a washable anti-aging latex pillow which comprises a pillowcase and a pillow interior, the pillowcase wraps the outer side of the pillow interior, the pillow interior is made of latex, and the content ratios of an antioxidant, an anti-ultraviolet agent, a mildew preventive, a stabilizer, a waterproof agent and a surfactant in the pillow interior are 0.3%-1.0%, 0.5%-1.0%, 0.1%-0.5%, 0.1%-1.0%, 0.5%-2.0% and 0.1%-1.0% respectively. The outer surface of the pillow inner is coated with a water-based coating with the thickness of 0.1 mm-0. 5mm; the air holes are formed in the upper surface of the pillow inner and completely penetrate through the lower end face of the pillow inner, so that the air permeability of the pillow inner is improved; the support and the air bag are arranged in the pillow inner, when the pillow inner is subjected to downward pressure, the movable part is stressed to move downwards and extrude the air bag, the pressure of air in the air bag is increased, and the air is exhausted from the air holes, so that air flow is formed on the upper side of the pillow inner, the air circulation of the upper surface of the pillow inner is improved, and the comfort degree of the latex pillow is improved.

The present invention belongs to the technical field of repeaters, and specifically is a repeater for a computer local area network. By symmetrically distributing a repeater body and a fire alarm body inside a fixed component and installing them at the top of the room, the problem that the signal may be blocked by many obstacles on the ground when the repeater is used, resulting in poor quality of the repeater transmission signal, is improved. In addition, by installing an air guide component inside the fixed component, the air guide component is used to continuously introduce airflow from the outside of the shell into the fixed component, thereby accelerating the flow of airflow in the fixed component, achieving heat dissipation of the repeater body and increasing the gas volume detected by the fire alarm body per unit time, thereby changing the installation position of the repeater body, improving the quality of signal transmission of the repeater body at the top of the roof, and also enhancing the ability of the fire alarm body to monitor fire in a timely manner. The structure is compact and easy to install, meeting the current people's demand for a clean indoor environment.

This invention provides a turbine blade and a gas turbine. The turbine blade includes a blade body. The blade body includes a suction surface, a pressure surface, a suction side rib, and a pressure side rib; the suction side rib is disposed on the suction surface at the tip of the turbine blade, and the pressure side rib is disposed on the pressure surface at the tip of the turbine blade, forming a tip groove; the turbine blade also includes an outer blade tip surface disposed at the tip of the turbine blade; the bottom edge of the suction side rib and the tip edge of the suction surface are connected through the outer blade tip surface, and the bottom edge of the pressure side rib and the tip edge of the pressure surface are connected through the outer blade tip surface; the suction side rib is inclined from the outer blade tip surface to the suction surface, forming a first angle with the outer blade tip surface, and a suction side groove is formed between the outer surface of the suction side rib and the tip surface; the pressure side rib is inclined from the outer blade tip surface to the pressure surface, forming a second angle with the outer blade tip surface, and a pressure side groove is formed between the outer surface of the pressure side rib and the tip surface. The above-described turbine blade can reduce tip leakage flow.