82results about How to "Guaranteed removal" patented technology

The invention discloses a method for preparing a foamed TiAl intermetallic compound. The method comprises the following steps of: adding 15 to 35 percent of low-temperature decomposition temperature pore-forming agent, 10 to 40 percent of moderate-temperature decomposition temperature pore-forming agent and 5 to 35 percent of high-temperature decomposition temperature pore-forming agent according to the total volume of 100 percent of mixed powder of TiAl powder and the pore-forming agents; uniformly mixing and performing compression molding; heating under vacuum; preserving heat at a low-temperature stage, a moderate-temperature stage and a high-temperature stage respectively; removing the pore-forming agents in turn; and sintering to obtain a high-porosity foamed TiAl intermetallic compound material with certain strength. The prepared TiAl intermetallic compound porous material has the porosity of over 80 percent, certain structural strength, high porosity, a simple and controllable process, stable quality and high repeatability, contributes to large-scale production and is suitable for the field of high-temperature heat insulation.

The invention provides a catalytic ceramic filter tube which is high in dust collection efficiency, can efficiently oxidize elemental mercury, can also efficiently reduce NOx, and achieves simultaneous dust removal and SCR denitration and a preparation method. The catalytic ceramic filter tube comprises a ceramic filter tube substrate, and a catalytic active component layer and a separation membrane which sequentially coat the ceramic filter tube substrate. The preparation method comprises the following steps: step 1. preparing the ceramic filter tube substrate by isostatic pressing molding; step 2. coating the ceramic filter tube substrate with a catalytic active component membrane to obtain a catalytic ceramic filter tube substrate; and step 3. preparing the separation membrane on the catalytic ceramic filter tube substrate. The catalytic ceramic filter tube provided by the invention can achieve integrated efficient removal of dust, NOx and elemental mercury in high-temperature flue gas (>300 DEG C), the service life of the catalyst can be prolonged through protection for the catalyst by the separation membrane and the substrate, and the structure arrangement of the ceramic filter tube can reduce the occupied area and running cost of equipment.

The invention provides a coal dry distillation technology employing indirect heat exchange. Glue gas subjected to heat exchange at a dry distillation stage is employed for direct heat exchange on raw coal at a drying stage, so that dewatering drying is realized. Then at the dry distillation stage, combustion of coal gas and air is realized and a high-temperature flue gas of 800-1200 DEG C is generated, and the high-temperature flue gas is used to perform indirect heat exchange on coal. After the dry distillation step is finished, cooling of semicoke employs direct spraying cooling at the upper part combined with indirect water cooling at the lower part, and indirect water cooling gives play to main effect, so that semicoke with relatively high quality is relatively easily obtained, and also no wastewater discharge is generated, water source is saved and environmental pollution is reduced. The coal dry distillation technology employing indirect heat exchange helps to improve the calorific value of coal gas, reduce the dust content in the coal gas and improve the tar yield, the prepared semicoke is high in quality, and the technology is applicable to both dry distillation of lump coal and small-granularity coal.

The invention discloses a non-rare earth impurity and rare earth element extraction and separation method. The method comprises the steps that at first, N235 is adopted for extracting and separating iron in rare earth feed liquid, then a sediment iron removing method is used for eliminating the iron in the rare earth feed liquid completely further, and then unsaponifiable naphthenic acid is adopted for extracting and separating aluminum in the feed liquid; the rare earth feed liquid obtained after the iron and aluminum are separated is extracted and grouped by adopting an extraction agent P507-N235, heavy rare earth elements are separated from light and medium rare earth elements, for feed liquid containing the heavy rare earth elements, unsaponifiable naphthenic acid is adopted for separating yttrium and other heavy rare earth elements, for feed liquid containing the light rare earth elements, the extraction agent P507-N235 is adopted for extracting, grouping and separating calcium, magnesium and the light rare earth elements, and the extraction agent P507-N235 continues to be used for separating other rare earth elements one by one. According to the method, non-rare earth impurities such as iron, aluminum, calcium, magnesium and the rare earth elements are separated completely, acid is utilized comprehensively, the adopted extraction agent does not need to be saponified and can be used directly and circularly, an acid reagent and an alkaline reagent do not need to be added in the extraction process, and the separation cost is very low.

The invention relates to an apparatus (100) for carrying cooling water away from the narrow sides (210) of a slab (200) passed essentially vertically through a secondary cooling device after casting in a continuous casting installation. In order to prevent partial overcooling of the slab at its edges, the apparatus (100) according to the invention comprises a plurality of water drainage devices (110-n), which are arranged such that they are distributed in a vertical direction over the length of the narrow side of the slab. This plurality of water drainage devices (110-n) is carried by a vertically arranged collecting downpipe (120). The collecting downpipe additionally serves for collecting the cooling water that is drained by the plurality of water drainage devices (110-n) and carrying it away in a decentralized manner.

A vehicle heater heat exchanger arrangement (10) includes: a pot-like heat exchanger housing (12) with a first bottom wall (18) in a first axial end area (16) and with a first circumferential wall (20) adjoining the first bottom wall and enclosing a longitudinal axis (L); and a pot-like outer heat exchanger housing (14) with a second bottom wall (22) in the first axial end area and with a second circumferential wall (24) adjoining the second bottom wall and enclosing the longitudinal axis. The inner heat exchanger housing and the outer heat exchanger housing are connected to one another in a second axial end area (26) and a fluid flow space (34) is formed between the inner heat exchanger housing and the outer heat exchanger housing. The second axial end area has an outwardly open recess (60) defined by the inner heat exchanger housing or/and by the outer heat exchanger housing.

The invention discloses a two-stage feeding and drying device, a biomass gasifier, and a two-stage feeding and drying method. The two-stage feeding and drying device comprises a drying cylinder, a feed bin and a spiral conveyer, wherein the feed bin is arranged on one end of the drying cylinder; a drying cylinder jacket with a hollow structure is coaxially and annularly arranged in the drying cylinder; an inner wall surface of the drying cylinder jacket surrounds to form a hollow conveying space; the spiral conveyer transversely penetrates through the bottom part of the feed bin and is coaxially welded into the hollow conveying space; a first high temperature flue gas inlet and a first high temperature flue gas outlet are formed in the bottom part and the top part of the feed bin; a secondhigh temperature flue gas inlet and a second high temperature flue gas outlet are formed in a lower bottom surface of one end, far away from the feed bin, of the drying cylinder, and an upper top surface of one end, close to the feed bin, of the drying cylinder; and the second high temperature flue gas inlet and the second high temperature flue gas outlet penetrate to an outer wall surface of thedrying cylinder jacket from an outer surface of the drying cylinder. The two-stage feeding and drying device and a gasifier are integrally designed, and meanwhile, conveying and drying are realized at the same time, so that the energy consumption is reduced, and the gasification gas quality is improved.

The invention discloses a disinfection device for an obstetrics and gynecology department manipulator, and relates to the technical field of medical auxiliary equipment. The disinfection device comprises two support bodies, wherein an upper support body is arranged between the two support bodies, an upper disinfection assembly is arranged at the bottom of the upper support body, lower disinfection assemblies are arranged in the two support bodies, the upper disinfection assembly comprises a first front-back moving assembly, the first front-back moving assembly is connected with a left-right moving assembly, the left-right moving assembly is connected with a first disinfection mechanism, the lower disinfection assembly comprises a second front-and-back moving assembly, the second front-and-back moving assembly is connected with an up-and-down moving assembly, the up-and-down moving assembly is connected with a rotating mechanism, the rotating mechanism is connected with a second disinfection mechanism, the rotating mechanism is used for controlling the second disinfection mechanism to retract into the support body or extend into a disinfection channel, and a disinfection detection unit is also arranged in the disinfection channel and is used for detecting the spraying degree of a disinfectant. The disinfection device has the advantages that the disinfection effect and the disinfection efficiency are improved.

The present invention discloses a method for producing low chlorine high purity magnesia by taking hydrated magnesium chloride or a magnesium chloride solution and soda ash as raw materials. The method includes utilizing two filter devices (belt vacuum filter machine) having best washing effect as a washing device, at the same time performing slurrying washing twice, and using a filter device (a centrifugal machine) with best dehydrating effect for dehydration treatment. When the water content is reduced to less than 65%, basic magnesium carbonate is obtained, and then dried and calcined to get the high purity magnesia product with Cl less than 0.07% (by mass percentage). The method enables the magnesia product to reach the class of national superior products, and helps to reduce the amount of washing water and the energy consumption for drying.

The invention relates to a multi-technology integrated separation process for producing high-purity helium from helium-rich liquefied natural gas tail gas, which comprises the following steps: helium-containing tail gas from a natural gas liquefaction device enters a multi-stage circulating membrane separation unit for preliminary enrichment after being subjected to cold energy recovery and pressurization; crude helium obtained through membrane separation enters a catalytic oxidation dehydrogenation unit after being pressurized, then enters a compression condensation and temperature swing adsorption dehydration unit and finally enters a low-temperature pressure swing adsorption purification unit, and high-purity helium is obtained; and desorbed gas of the adsorption unit returns to a membrane separation unit. Through multi-technology gapless matching and synergistic interaction, it is guaranteed that each impurity is removed in a proper mode, high-purity helium with the purity being 99.99 vol% is obtained, the helium recovery rate is remarkably increased, and meanwhile purification energy consumption is reduced. The natural gas with a helium concentration of 4.60vol% liquefies tail gas , the simulation result shows that the recovery rate of the multi-technology integrated process can reach 84.0% or above, and the purification unit consumption (electricity) does not exceed 4.0 kWh/Nm <3> of helium.

The invention relates to a wiring method of a wiring terminal. The wiring method comprises the following steps of S1, putting a varnished wire into a crimping and fixing groove of the wiring terminal, and performing at least one time of normal-temperature extrusion on the side wall of the crimping and fixing groove to enable the varnished wire to be fixedly connected with the wiring terminal; and S2, performing at least one time of high-temperature extrusion on the side wall of the crimping and fixing groove to enable the varnished wire to be electrically conducted with the wiring terminal. Compared with the conventional process, normal-temperature extrusion for fixation and high-temperature extrusion for conduction are carried out by the wring method disclosed in the invention, so that the varnished film of the varnished wire can be molten through high-temperature extrusion, and the conduction effect between the varnished wire and the wiring terminal can be reinforced; and in addition, production efficiency is improved, production cost is lowered, emission of gases and powder with pungent smell can be reduced, and damage to the environment and harm to the body of an operator can be avoided.

The present invention discloses a method of cumulative helium mass spectrometric combination test by using argon gas as gross-leak tracer gas, and specifically gives the procedure for this gross-leak and fine-leak combination test, comprising steps and methods of selecting helium-argon prefilling method or helium-argon pressuring method, fixed or flexible scheme and the criterion R_Ar0max for argon measured leak rate of gross-leak test according to the rigour grade T_Hemin, cavity volume, leak rate of surficially absorbed helium and argon and the history of the test of a component under test; designing time for pressuring of helium-argon pressuring method, the maximum test-waiting time of fine-leak test and the criterion for helium measured leak rate, helium-argon prefilling and helium-argon pressuring, removing absorbed helium and argon gas, gross-leak test, fine-leak test and complementally testing bigger gross leak, which enhances the sensitivity of gross-leak test, lengthens the maximum test-waiting time of fine-leak test, tremendously expands the range of adapted cavity volume and criterion for measured leak rate of fine-leak test, thus making the cumulative helium mass spectrometric combination test more applicable, convenient and practical.

The invention discloses a seed husking device for green beans. The seed husking device comprises a machine frame, wherein a power mechanism, a pushing mechanism and a cutting mechanism are arranged on the machine frame; the power mechanism comprises a fan blade, a rotating shaft, a cam, a first hinge arm and a cutting knife; the pushing mechanism comprises a second hinge arm, a first tapered wedge block, a pushing rod and a transport pipe, wherein a feed pipe is arranged on the transport pipe; a cutting opening, a waste opening and a spacing hole are sequentially formed in one end, away from the pushing rod, of the transport pipe, and the cutting opening and the cutting knife are arranged oppositely; the cutting mechanism comprises a third hinge arm, a second tapered wedge block in sliding connection with the spacing hole, and a hollow cutting pipe; a first pressure spring is arranged between one end, away from the second tapered wedge block, of the cutting pipe and the machine frame; and a movable plate is hinged to the inner wall of the cutting pipe, a first pressure spring is arranged between one end, away from the second tapered wedge block, of the cutting pipe, and the machine frame, and a discharge opening is also formed in the cutting pipe. According to the seed husking device disclosed by the invention, the problems that an artificial seed husking manner for green beans is low in efficiency, and fingers easily suffer from chimatlon due to being exposed to cold environment are mainly solved.

The invention discloses a blade polishing device and method. The blade polishing device comprises an industrial robot, a force control device, a clamping tool, a first polishing machine, a second polishing machine and a third polishing machine, wherein the force control device is installed at the end part of a mechanical arm of the industrial robot; the clamping tool is connected with the force control device; the first polishing machine, the second polishing machine and the third polishing machine are distributed around the industrial robot; the clamping tool is used for clamping a blade; theforce control device is used for adjusting the contact pressure between the blade and the polishing machines; the first polishing machine is used for polishing the profile of the blade; the second polishing machine is used for polishing the air inlet edge and the air outlet edge of the blade; and the third polishing machine is used for polishing the edge plate of the blade and is used for polishing the profile of the blade, the air inlet edge and the air outlet edge of the blade. The force control device sets the contact pressure between the blade and the polishing machines, and ensures the removal amount of different blade sections in the polishing process, and the requirements of different positions and precision of the blade are met by different stations of the polishing machines.