107results about How to "Renovation investment is small" patented technology

The invention discloses a power station machine furnace integrated cold end comprehensive optimization system which belongs to the field of power station energy saving. The system mainly comprises a steam turbine, a main economizer, a main flue, a bypass flue, a convergence flue, a main air pre-heater, smoke-water heat exchangers, a high pressure heater, a low pressure heater, a deaerator, a smoke-air heater and steam extraction condensed air pre-heaters. Multi-stages of the steam extraction condensed air pre-heaters are serially arranged, sequentially extract a part of exhaust steam of the steam turbine and corresponding low-pressure-stage extraction steam and preheat cold air stage by stage; and the first, second and third stage smoke-water heat exchangers are used for heating feeding water and condensed water, and high-pressure extraction steam of the steam turbine is replaced. According to the machine furnace integrated cold end comprehensive optimization system, by means of efficient waste-heat utilization, low-pressure extraction steam is used for heating air, and the high-pressure extraction steam for backheating is saved so that unit output power is obviously increased, deep energy saving and consumption reduction of the coal-fired power generation unit are achieved, the problem of low-temperature corrosion on a heated surface during waste-heat utilization is solved, and economical benefits are remarkable.

The invention discloses a system and a process for sludge in situ decrement enhanced by utilizing metazoan and application of the process. The system comprises an anaerobic zone, an anoxic zone, an oxic zone, a metazoan growing zone and a secondary sedimentation zone. A biochemical system can perform in situ decrement through arranging the metazoan growing zone in the sewage treatment process; and cultivated and domesticated metazoan is continuously added in the metazoan growing zone to enhance organism predation, thereby achieving the purpose of sludge in situ decrement and realizing sludge decrement effect of 50-80% of activated sludge. The process of activated sludge in situ decrement with an efficient biological method is suitable for any activated sludge methods and deformation technologies thereof, such as A<2>/O (anaerobic-anoxic/oxic), A/O (anoxic/oxic), SBR (sequencing batch reactor), MSBR (modified sequencing batch reactor), CASS (cyclic activated sludge System), oxidation ditch, MBR (membrane bio-reactor) and the like, can also be used for a biological treatment technology having a biological carrier, can be used for sludge decrement of a newly-built sewage treatment engineering and can also be used for transformation of a built engineering with extremely low transformation cost.

The invention provides a method for improving the tobacco shred making quality of reconstituted tobacco. The method comprises the specific steps of putting, manual fragmentation, super-return loosening, tobacco moistening and feeding, tobacco storage, shredding, moisture regulation and control, drying and tobacco shred storage. The process of moisture regulation and control is added, and the problems are solved that the technological path is long, the reconstituted tobacco has special moisture absorption performance, the water content in the material process is excessively influenced by the temperature and humanity of the environment, and accordingly the water content of batch-to-batch drying inlets is obviously fluctuated; the water content of shredded materials is stable, the stability of batch-to-batch moisture of the materials which enter the drying process is guaranteed, the water content of materials of drying outlets meets the processing requirement, the stability of the processing intensity and dewatering amount in the batch-to-batch tobacco shred drying process is achieved, and the stability of the smoking quality of the reconstituted tobacco shreds of tobacco shred dryingoutlets is guaranteed. Compared with other methods, the method has the advantages that the technological path is less changed, the reconstitution investment is low, the energy is saved, the consumption is lowered, and meanwhile workshops do not need to be newly built or rebuilt.

The invention discloses a floating boring head for processing inner surface of bent tube billets, wherein one end of a boring bar connector is connected with a boring bar while the other end thereof is flexibly connected with a universal connection block; the other end of the universal connection block is connected with a support shaft; a guide mould is installed on the support shaft through a bearing; a boring cutter mechanism comprises a cutterhead and a boring cutter; the other end of the support shaft is fixedly connected with the cutterhead; and two boring cutters are symmetrically fixed by the central line on the cutterhead. In the floating boring head, as the other end of the boring rod connector is flexibly connected with the universal connection block, the guide mould can vertically and transversely move relative to the boring bar in the tube billet and adapts curvature of the tube billets effectively; moreover, the guide mould and the boring cutter mechanism are in a rigid connection manner; thus, the guide mould can transfer the curvature of the tube billets to the boring cutters well so as to ensure wall thickness uniformity of the processed tube billets, realize high processing efficiency, wide processing range, and small equipment upgrading investment and not influence the processing performance of the original boring lathe after transformations.

The invention provides a target control method for a heating power generation system. The target control method is suitable for various models and capacities of condensing steam turbines used for heating in all heating areas and safely realizes zero cold source heat loss in the heating of steam turbine condenser circulating water within the normal exhaust temperature range on the premise of not needing to reconstruct a steam turbine body, and the method has the beneficial effects that the effects of saving energy, saving the funds and shortening the construction period are realized for enterprises, the environment is protected, and the haze is reduced. During the heating of the circulating water, a unit can also participate in the peak shaving of a power grid and make the power grid operate more safely and stably. The heating radius of a hot water network exceeds the heating radius generated by means of the prior art and can reach 120-150 km. Meanwhile, a mathematic model is established to solve the operating parameter target values with the golden section algorithm, and the control with the highest energy supply efficiency as the target is achieved. The solution to the target values is more accurate, and scientific control measures are used to ensure the optimized, safe and reliable operation of the heating power generation system.

A process for preparing ultralow-carbon steel by vacuum degassing features that the argon flow and the vacuum level are dependent on the service age of the furnace, that is, for the initial 20 batches, the argon flow is matched with inner diameter of insertion-in tube, and for the following batch whose decarbonizing time is longer than 5 min, the argon flow is increased by more than 20%. Before decarbonizing the molten steel, the vacuum chamber is depressurized in advance. Within 0-10 min after beginning decarbonization, the depressurizing speed is increased.

The invention discloses a device for strengthening A2/O denitrification. The anaerobic region of the AAO device and a sludge denitrification pond are connected, the aerobic region of the AAO device is connected with a settling pond, and the sludge denitrification pond is connected with the anaerobic region of the AAO device. The settling and sludge storage functions of the settling pond are separated through technological adjustment, the functions of the original sludge concentration pond are expanded, the original sludge concentration pond is upgraded into the sludge denitrification pond, the overall performance of the sewage treatment system is enhanced, the energy-saving stable and efficient denitrification and dephosphorization of the combined system are realized under the condition of not adding structures, and a theoretical basis and technical support are provided for the upgrading and reconstruction of a municipal sewage treatment plant.

A corn germ pretreatment processing technology to eliminate mycotoxin in corn oil includes ozone fumigation of the corn germ, cleaning, impurity removal, modulation and softening, rolling, and alkali puffing. The ozone fumigation treatment is carried out in a closed chamber at a temperature of 5 DEG to 50 DEG C; ozone is introduced when the moisture content of corn germ is 7%-25% for ozone sterilization and mycotoxin pre-degradation for 0.5-48 h, wherein the ozone concentration is 5-50ppm. The alkali puffing is as below: adding alkali lye or steam with concentration of 5%-30% into the corn germ before corn puffing treatment or in the puffing process, wherein the addition amount is calculated by the content of mycotoxin in corn germ and the acid value of corn oil. The corn oil prepared from corn germ contains mycotoxins, such as aflatoxin B1 (AFB1) and zearalenone (ZEN), less than the national limit standard. The final product has the characteristics of low mycotoxin content, small acid value, light color, and little loss in refining.

The invention discloses an automobile color coating process. The coating process comprises the steps of ED coating, floating coat coating, BC1 metal-color paint layer coating, BC2 transparent color paint layer coating and varnish coating. According to the coating process, the light transmission principle is utilized to improve the red color chroma and the angle-dependent color change degree, so that the red charm degree is increased; an automobile coating line does not need to be changed in a large range, by adding one color paint can, the red color chroma can be greatly higher than that of the existing colors, and the 15-degree chroma of the red color adopting the coating process can reach 90-100 while the 15-degree chroma of the mainstream red color in the market is 50-70. According to the coating process, the existing water-based advanced processes 3C1B and 3C2B are combined so that the energy-saving and environment-friendly effects can be effectively carried out.

The invention relates to a method for widening SCR denitration low-load operation potential based on ammonium bisulfate poisoning recovery characteristics of a catalyst. The method includes determining the lowest continuous ammonia injection temperature of the catalyst; enabling the catalyst to continuously operate at the temperature T1, wherein T1 is lower than the lowest continuous ammonia injection temperature, the continuous operation time is t1, the unit load corresponding to T1 is W1; and after the continuous operation time of the catalyst at the temperature T1 exceeds t1, enabling the operation temperature of the catalyst to be increased to T2 for continuous operation, wherein T2 is not lower than the minimum continuous ammonia injection temperature, the continuous operation time ist2, the unit load corresponding to T2 is W2, and the difference value between W1 and W2 is the percentage or potential that the SCR denitration low-load operation of the unit can be widened. The method does not need to preform temperature raising transformation on on-site equipment, fully utilizes the low-load adaptability of the catalyst to realize the wide-load operation of the denitration system, reduces transformation investment, avoids the shutdown from affecting the power generation of the unit, and reduces the risk of affecting the normal operation of the unit due to the equipment transformation.

The invention provides a converter tapping injection refining desulfurization method and device. In the converter tapping process, with Ar (or N2) as powder spraying carrier gas, a spraying gun injects powdery desulfurization agents to molten steel streams in the tapping process, so that the powdery desulfurization agents are fed in a ladle with the molten steel streams; and the full mixing is realized under the effect of bottom blowing argon stirring of the ladle, so that the contact specific surface area of the powdery desulfurization agents and molten steel is increased, the inter-phase mass transfer speed and the molten steel desulfurization reaction speed are accelerated, the effective utilization efficiency of the powdery desulfurization agents is improved, the desulfurization refining production takt is accelerated, and the continuous stable efficient refining is realized. The defects in a traditional desulfurization process can be overcome; and the quick and efficient smeltingcan be realized. The powdery desulfurization agents can be replaced by carbon powder, desulfurization powder agents, desulfurization powder agents or alloy powder agents; and the multifunctional refining can be realized. The device and the method are not only suitable for molten steel desulfurization refining processes, but also suitable for other refining processes.

The invention relates to a prefabricated capillary energy-storage heat-dissipation wall. The prefabricated capillary energy-storage heat-dissipation wall comprises a concrete wall, the concrete wall is sequentially provided with a first tempered glass layer, a second tempered glass layer, a first-stage dedusting filter screen, a second-stage dedusting filter screen, an air adsorption layer, a passive heat source ground heating capillary pipe net, thermal insulation materials and a wall body capillary pipe net from outside to inside. The periphery of the first tempered glass layer and the periphery of the second tempered glass layer are sealed through first sealing glue to form a closed first air layer, a closed second air layer is formed between the first-stage dedusting filter screen and the second tempered glass layer, the periphery of the first-stage dedusting filter screen and the periphery of the second-stage dedusting filter screen are sealed through second sealing glue to form a closed third air layer, the second-stage dedusting filter screen is in close contact with the air adsorption layer, and the capillary pipe nets are in close contact with the air adsorption layer. The prefabricated capillary energy-storage heat-dissipation wall is convenient to install and use and low in cost, strong air and noise pollution can be avoided, the electricity consumption is small, and energy is saved.

The invention discloses a method for improving reconstituted cut tobacco blending accuracy. On a cigarette shredding production line, prepared reconstituted cut tobacco end products are subject to a moisture adjust and control procedure to be humidified or dried to enable the moisture content of reconstituted cut tobacco to be basically the same as cut tobacco, and then the humidified or dried reconstituted cut tobacco end products are blended with the cut tobacco according to the formula ratio. By adoption of the method, the content of reconstituted cut tobacco dry matters blended in each batch conforms to the formula demand, fluctuation of the reconstituted cut tobacco blending ratios between different batches is reduced, accordingly, the reconstituted cut tobacco blending accuracy is improved, and influence on the product quality from change of the moisture content of reconstituted cut tobacco is reduced. Compared with other methods, the method provided by the invention has the advantages that the process change is small, the changing investment is low, new workshops or rebuilding of workshops are not needed and the energy consumption is low.

The invention discloses a production line used for gluing and edge covering of an automobile door cover. The production line comprises a gluing production line and an edge covering production line which are in mutual butt joint, wherein the gluing production line comprises a combining platform; one side of the combining platform is provided with an inner plate tetrahedron rotating platform, a glue gun, a six-axis fixed robot and an inner plate gripper storing frame; the other side of the combining platform is provided with an outer plate positioning platform, a combining platform switching storage region, an outer plate seven-axis robot and an outer plate gripper storing frame; the edge covering production line sequentially comprises a special pre-edge-covering machine, a pressing machine and a special inner edge covering machine; a buckling gripper storing frame and a buckling seven-axis robot are arranged between the special pre-edge-covering machine and the pressing machine; an assembly seven-axis robot and an assembly gripper storage frame are arranged between the pressing machine and the special inner edge covering machine; the special pre-edge-covering machine is located behind the combining platform. The production line has the beneficial effects that gluing and edge covering processes of a plurality of types of automobile door covers are automatically finished by the machine; the quality of the product is stable and reliable, the automation degree is high and the commonality is strong.

The invention relates to the field of grid control, in particular to an electricity-saving method for a medium and low voltage distribution network. The invention provides the electricity-saving method for the medium and low voltage distribution network. The invention adopts a systematic thinking to save electricity for the medium and low voltage distribution network, and has the advantages of strong controllability, high reliability, easy operation, high practicability and the like. The invention adopts a content electricity-saving method, investment in the distribution network is not increased, reformation investment is small, and systematic and huge electricity saving is realized based on the existing communication network and a third-party system. The invention considers the communication compatibility of master station software, satisfies different kinds of distribution network equipment, the connection communication of the third-party system and the analytic interaction of specifications with different standards, and realizes the largest applicability and usability of application.

The invention discloses a centralized heating method and system. The method comprises the steps that secondary side water supply temperature data and return water temperature data of users of the centralized heating system are obtained firstly; according to the secondary side water supply temperature data and return water temperature data of the users, response time of the users is determined; comprehensive response time is determined according to the response time of the users; and finally the heating sequence of the users is determined according to the response time of the users and the comprehensive response time. The heating sequence of the users is determined according to the response time of the users, the number of heating users in the same time period is reasonably set, accordingly, centralized heating pipeline operation pressure is reduced, improvement investment is reduced, and the operation cost is reduced.