30results about How to "Avoid secondary generation" patented technology

The invention provides a system for visually evaluating a production and blockage law of hydrate in a screen and a testing method thereof. An experimental system for testing a secondary production, enrichment and blockage law of the hydrate in a screen mesh comprises a reaction kettle, a gas-liquid mixed conveying coil, a high-speed camera, a data acquisition and processing module and the like. The testing method is based on the system, and through adjustment of a cooling mode and control of a temperature and pressure condition and a gas-liquid ratio condition, a three-dimensional chart of thesecondary production and blockage of the hydrate in the screen mesh is simulated; the system can provide basic data for calculation of a well-bottom screen sand control additional skin factor and formulation of a precise pressure-reducing and temperature-controlling scheme under different well body structure conditions (a vertical well, a horizontal well or a multi-branch hole) of a natural gas hydrate production well, and provides a strong support for a sand production management system of the natural gas hydrate production well.

A garbage incinerating exhaust gas using environment-friendly and energy-saving device comprises a garbage storage silo, a garbage breaker, a garbage feeder, a garbage incinerator, a decomposing furnace, a rotary cement kiln and a dioxin detector. The decomposing furnace, the rotary cement kiln and the dioxin detector are used for cement dry method production. The garbage feeder is communicated with a garbage inlet of the garbage incinerator. An exhaust port of the garbage incinerator is communicated with the decomposing furnace through pipelines. A material outlet of the decomposing furnace is communicated with a feeding port of the rotary cement kiln. The garbage incinerator and the rotary cement kiln are combined, high-temperature gas generated by garbage incineration is sent to the decomposing furnace and the rotary cement kiln, heat is provided for the decomposing furnace, meanwhile standing time of the self exhaust gas under a high-temperature condition in the decomposing furnace is over 4 seconds, combustion process is sufficient, incineration under the high-temperature condition is complete, and particularly the dioxin is prevented from being generated, and therefore pollution to environment is reduced, recycling of resources and sustainable development of economy are beneficial for being achieved, and an energy-saving and environment-friendly aim is achieved.

The invention relates to an environmental-protection and energy-saving garbage incineration and waste gas utilization device, which comprises a garbage storage silo, a garbage crusher, a garbage feed device, a garbage incinerator, a decomposing furnace, a rotary cement kiln and a Dioxin detector, wherein the decomposing furnace, the rotary cement kiln and the Dioxin detector are used for dry-process cement production; the garbage feed device is communicated with the garbage inlet of the garbage incinerator; the exhaust port of the garbage incinerator is communicated with the decomposing furnace through a pipeline; and the material outlet of the decomposing furnace is communicated with the feed port of the cement kiln. Garbage incineration and the rotary cement kiln are combined with each other, so that high-temperature gas generated by garbage incineration is delivered to the cement kiln and the decomposing furnace again, and when heat is provided for the decomposing furnace, the retention time of the waste gas generated by the garbage incineration reaches as long as 4 seconds or above under the high-temperature condition in the decomposing furnace; the combustion process is full; the incineration at high temperature is thorough; and especially, Dioxin is prevented from being generated, and the environmental pollution is reduced, thereby being beneficial to realize the resource recycling and the sustainable development of the economy, and achieving the goals of energy saving and environmental protection.

The invention relates to the technical field of garbage disposal, in particular to a household garbage pyrolytic electricity generation method. The method comprises the following steps that S1, household garbage is conveyed into a pyrolytic gas making furnace for pyrolytic gasification, reaction gas is introduced into the pyrolytic gas making furnace, and a product which contains combustible gas is obtained, wherein the oxygen content in the reaction gas ranges from 30% to 93%; S2, the heat value of the generated combustible gas is detected, and the oxygen content in the reaction gas introduced into the pyrolytic gas making furnace is regulated in real time, so that the heat value of the obtained combustible gas is output stably; S3, the combustible gas obtained in S2 is conveyed into a gas electricity generator for electricity generation. The gas obtained through household garbage pyrolytic gasification can be directly used for gas electricity generation.

The invention discloses a process for cleaning the surface of a piston rod. The process comprises the following steps: 1. racking, 2. degreasing, 3. neutralization, 4. washing, 5. water-based anti-rust treatment, 6. drying, 7. surface conditioning, 8. phosphorization, 9. washing, 10. water-based anti-rust treatment, and 11. room-temperature draining. The process has the following advantages: in the degreasing procedure, the overall rust of the rod is cleaned, and an ultrasonic device is arranged around a groove body, for accelerating rust cleaning; in the neutralization procedure, the overall particle impurities of the rod are cleaned, and the residual solution in the previous procedure is subjected to neutralization treatment; in the washing procedure, the residual solution in the previous procedure is cleaned, and prevented from being brought in the next procedure; in the anti-rust treatment procedure, a layer of anti-rust film on the surface in an activated state, of the rod, is ensured; in the phosphorization procedure, the end surface of a piston is phosphorized, then medicine residues on the surface are cleaned through washing, then the anti-rust treatment is carried out, and the whole cleaning process is completed.

The invention relates to the field of determination of the permeability of a hydrate-containing reservoir in a hydrate phase change process, and discloses a determination method of the permeability of a hydrate-containing reservoir in the hydrate phase change process. The determination method comprises the following steps of: preparing a reference reservoir and a decomposition reservoir; preparing displacement gas and/or displacement liquid; injecting the displacing gas and/or displacing liquid the reference reservoir and the decomposition reservoir, and determining the horizontal absolute permeability or the vertical absolute permeability of the reference reservoir and the water-phase horizontal effective permeability or the vertical effective permeability of the decomposition reservoir in the bound gas state under different effective stresses; and determining the horizontal gas-water relative permeability or the vertical gas-water relative permeability of the reference reservoir and the decomposition reservoir by using a steady-state method or an unsteady-state method. According to the determination method, the gas-water seepage rule in the natural gas hydrate reservoir in the phase change process can be reflected.

The invention relates to the technical field of harmless disposal of an industrial organic waste, in particular to a fluidized bed incinerator for a special waste. The fluidized bed incinerator for the special waste comprises a fluidized bed incinerator body, a heating device, a flue, a steam boiler and a rapid cooling device, wherein the heating device comprises an oil gun connected to a dilute-phase zone of the body; a temperature controller for controlling the heating device is arranged in the dilute-phase zone of the body; the rapid cooling device comprises a fluid atomizing spray gun mounted on the flue corresponding to the back section of the steam boiler; a gun head of the fluid atomizing spray gun is positioned inside the flue; the spray gun is connected with a water tank through a water pipe; a water pump is arranged on the water pipe. Through arrangement of the heating device in the dilute-phase zone of the incinerator, the temperature in the dilute-phase zone of the incinerator is controlled to be above 1100 DEG C, so that the special waste is completely incinerated in the dilute-phase zone of the fluidized bed incinerator; the rapid cooling device is mounted in the flue corresponding to the back section of the steam boiler, so that flue gas is rapidly cooled to be 200 DEG C, and thus the secondary environment pollution caused by dioxin production is prevented.

A sewage treatment system, including a sewage tank, a degradation tank, an absorption tower, a recovery tank and a crystallization unit, the technical points are: the sewage tank is connected to the bottom air inlet of the absorption tower I, and the top exhaust end of the absorption tower I is connected to the The bottom air inlet of absorption tower II is connected, the top exhaust end of absorption tower II is connected with the bottom air inlet of absorption tower III, the top exhaust end of absorption tower III is connected with the atmosphere, absorption tower I and absorption tower The bottom discharge end of II is respectively connected with the recovery tank, the top exhaust end of the absorption tower I is connected with the bottom air inlet of the recovery tank, and the top exhaust end of the absorption tower II is connected with the top air inlet of the recovery tank , The liquid discharge end at the bottom of the recovery pool passes through the crystallization unit, the pump body II and the liquid inlet end at the top of the recovery pool to form a crystallization cycle. It has the advantages of simple and compact structure, low construction cost, convenient use, high processing efficiency and good processing effect.

The invention belongs to the field of industrial furnaces, and relates to a medium-low temperature heat treatment furnace. The medium-low temperature heat treatment furnace comprises a furnace body, wherein a workpiece conveying mechanism arranged in the extending direction of the furnace body is arranged in the furnace body, at least one heat supply section is arranged in the furnace body in theconveying direction of the workpiece conveying mechanism, each heat supply section comprises at least one burner arranged at the top of the furnace body and at least one in-furnace flue gas self-circulation system, and a smoke outlet is formed in the furnace body. According to the medium-low temperature heat treatment furnace, the transverse heat supply balance of a hearth can be guaranteed; the convection heat transfer effect in the furnace is enhanced; the furnace temperature uniformity, especially the temperature uniformity at medium and low temperatures, can be improved; when a in-furnaceflue gas circulation system fails, normal production can still be achieved; the furnace discharges smoke from the tail of the preheating section, the smoke discharge temperature is low, and the heat efficiency is high; and the in-furnace circulation system cannot increase the height of the hearth, and the furnace profile structure is simple and reliable.

The invention discloses a process system and a method for plasma gasification of industrial sludge and belongs to the technical field of harmless disposal of industrial sludge. The process system comprises a sludge adding device, a plasma gasification system, a combustible gas combustion system and a tail gas treatment system which are sequentially connected; an additive adding device is connectedwith the sludge adding device; the plasma gasification system comprises a plasma gasifier; the combustible gas combustion system comprises a combustion tower with an oxygen supply pipeline; the tailgas treatment system comprises a tail gas cooling system and a tail gas purifying system.

The invention relates to the field of oxide solid electrolytes, in particular to a method for removing impurities on the surface of a lithium-lanthanum-zirconium-oxygen electrolyte of a solid-state lithium battery. The method comprises the following steps of: transferring a lithium-lanthanum-zirconium-oxygen sheet containing impurities into an analysis chamber of an X-ray photoelectron spectrometer, and gradually heating in a vacuum environment to remove the impurities on the surface of the lithium-lanthanum-zirconium-oxygen sheet; carrying out in-situ XPS testing on the surface of the lithium-lanthanum-zirconium-oxide sheet in the step-by-step heating process; after impurities on the surface of the lithium-lanthanum-zirconium-oxide sheet are removed, cooling the in-situ heating sample table to the room temperature and then transferring the in-situ heating sample table into a glove box connected with the X-ray photoelectron spectrometer, and taking down the lithium-lanthanum-zirconium-oxide sheet from the in-situ heating sample table to obtain the pure lithium-lanthanum-zirconium-oxide sheet. According to the method, vacuum annealing and in-situ XPS testing are used, removal of the impurity layer on the surface of the lithium-lanthanum-zirconium-oxide sheet is combined with surface component monitoring, and high-precision removal of impurities on the surface of the lithium-lanthanum-zirconium-oxide sheet is achieved.

The invention discloses a method for controlling dioxin in a fly ash washing process through sintering treatment, which comprises the following steps: carrying out washing dechlorination treatment on waste incineration fly ash, performing pelletizing, coating the surfaces of pellets with a slaked lime layer, and carrying out drying to obtain washed fly ash pellets; and mixing the washed fly ash pellets into the iron ore sintered granules to be uniformly mixed, distributing the mixture to the middle lower part of a sintered material layer through segregation, and performing igniting and sintering. According to the method, the waste incineration fly ash is subjected to washing dechlorination, secondary generation of dioxin in the sintering process can be greatly reduced, meanwhile, the surfaces of the washing fly ash pellets are coated with slaked lime, chlorine volatilized by the washing fly ash ball material and surrounding sintering materials can be adsorbed, and by optimizing the distribution and sintering technology, the dioxin in the fly ash is effectively degraded, and secondary generation of the dioxin in the sintering process is inhibited. According to the method, secondary generation of the dioxin can be effectively inhibited under the condition that the quality of the sintered ore is not affected, and clean resource utilization of the waste incineration fly ash is promoted.