192results about How to "Reduce steam" patented technology

The invention relates to an in-situ regeneration method of a butylene oxy-dehydrogenation catalyst, which mainly solves the problems that the in-situ regeneration effect of the butylene oxy-dehydrogenation catalyst is poor, so that the life of the catalyst is shortened, the conversion rate and yield of reaction are reduced, and the change of the catalyst results in long stopping time of a device and influences the output of the device in the prior art. The method comprises the following steps of: a) stopping feeding of oxygen-containing gas and then a butylene raw material, purging the catalyst with 300-500 DEG C superheated water vapor for 0.2-56h, b) gradually reducing the amount of the water vapor till the airspeed of the water vapor is 500-2000h<-1>, filling in air till the molar ratio of the air to the water vapor is 0.05-0.2, controlling the regeneration temperature at 360-450 DEG C, conducting regeneration of the oxy-dehydrogenation catalyst, and c) reducing the amount of the vapor, allowing the temperature rise of a bed to be reduced gradually till the temperature at an inlet and an outlet of the catalyst bed keeps constant, and accomplishing the technical scheme of catalyst regeneration. The method solves the problems better, and can be used for industrial production of preparing butadiene through butylene oxy-dehydrogenation.

Disclosed are an energy-saving quick power regulating system of a thermal generator set and a method. The system comprises a distribution type control system, a PLC (programmable logic control) unit and a low-pressure heater condensate bypass regulating system, the PLC unit is connected with the distribution type control system by a bidirectional interface, and the low-pressure heater condensate bypass regulating system is in communication connection with the PLC unit. The method includes that opening of a bypass regulating valve is reduced by the PLC unit when load needs to be quickly added, and the opening of a fully opened high-pressure regulating valve is reduced by the PLC unit via the distribution control system when the load needs to be reduced quickly. Unnecessary loss is avoided on the premise of guaranteeing safety and stability of the system, the requirement of a power grid on power regulating speed of the set is met, and quick power regulation and economical running of the thermal generator set are realized.

The invention discloses a fused salt heat storage and heat release peak load regulating system for a thermal power generating unit. According to the fused salt heat storage and heat release peak loadregulating system, a fused salt heat storage system, an I-stage fused salt low-temperature heat release system and a II-stage fused salt high-temperature heat release system are additionally arrangedon the basis of the original thermal power generating unit, and therefore peak load regulating of a power grid is realized through heat storage and heat release of fused salt; when the dispatching load of the power grid is decreased, part of high-temperature reheat steam is extracted from an outlet of a boiler reheater and exchanges heat with the fused salt in the fused salt heat storage system, and therefore consumption and utilization of the reheat steam in the electricity utilization off-peak season are completed; when the dispatching load of the power grid is increased, a part of high-pressure feedwater flowing to a high-pressure heater is divided into the I-stage fused salt low-temperature heat release system to exchange heat with the fused salt; and meanwhile, the steam discharge amount of a high-pressure cylinder is increased, part of increased exhaust steam of the high-pressure cylinder is fed into the II-stage fused salt high-temperature heat release system to exchange heat with the high-temperature fused salt, the heated steam enters an intermediate-pressure cylinder to apply work, the amount of the steam entering the intermediate-pressure cylinder and the output of a steam turbine can be increased, and the electric power of the thermal power generating unit can be rapidly increased.

The invention belongs to the technical field of steam cooking equipment, and discloses a control method for furnace chamber temperature and steam quantity of steam cooking equipment, which comprises the following steps of: S1, setting cooking temperature T required by cooking and total working time t<total> required by cooking, and starting the steam cooking equipment; S2, starting a circulating fan, and preheating the furnace chamber; S3, after S2 is completed, enabling t<total> to start countdown, stopping heating of the oven cavity, meanwhile starting to record the accumulated cooking timecooking<cooking>, controlling the steam generator to start or stop working according to the relationship between t<cooking> and the accumulated cooking time threshold, controlling a part of heaters tostart or stop working so as to enable the temperature of the oven cavity to reach T<setting> until t<total> countdown is zero, finishing the cooking process, and exiting the cooking program. According to the method, the problem that the actual working power of existing steam cooking equipment is too large is solved.

The invention provides a self-deoxidization waste heat boiler suitable for sulfur-containing fuel. The self-deoxidization waste heat boiler comprises a waste heat recovery device, a flash evaporator internally provided with a steam and water separator, a deoxidization water tank communicated with the flash evaporator, a steam pocket and an evaporator arranged in a flue. A heat absorption section and a heat release section of the waste heat recovery device are connected through an ascent pipe and a descent pipe, the heat absorption section is arranged in the flue, the steam pocket is connected with the evaporator through a circulation pipeline, a boiler water supply pipe is connected with a water inlet of the flash evaporator after passing through the heat release section, and a water outlet of the deoxidization water tank is connected with the steam pocket. The flash evaporator is adopted for deoxidization, heat energy used for deoxidization is smoke waste heat of the boiler, the temperature of exhausted smoke of the waste heat boiler can be effectively reduced, waste heat of the boiler is fully used, steam does not need to be extracted in the deoxidization process after the flash evaporator is additionally arranged, the steam amount of the boiler is saved, and the efficiency of the boiler is improved.

The invention provides a de-sulfur method with reproducible desulfurizer for preparing sulfuric acid as a final product, comprising the steps of the pretreatment of desulfurized flue gas, the absorption of SO2, the desorption of desulfurizer, the recycling of SO2, the preparation of sulfuric acid and the like. The method is characterized in that the endogenetic steam of a desorption tower is replaced by thermal process gas with the oxygen content being greater than 10%; the desorption energy is mainly provided by the absorption solution entering the desorption tower; the volume percentage concentration of the SO2 in the mixed gas exhausted from the desorption tower is controlled to be greater than or equal to 3%. The method provided by the invention solves the problems of dual waste of energy, function surplus, and big primary investment existing in the prior art to meet the needs of desulfurization projects of different types, meanwhile, the method is especially adaptable for the desulfurization system of a sintering machine.

The invention provides a water recycling device for a steam box. The water recycling device comprises a water storage box, a steam generator, a liner, an air guide cover and a water storage tank, wherein the water storage tank is provided with a first water inlet, a second water inlet, a third water inlet and a water outlet, a first circulating water channel is arranged between a first outlet of the air guide cover and the first water inlet, a second circulating water channel is arranged between a second outlet in the bottom of the steam generator and the second water inlet, a third circulating water channel is arranged between a third outlet of an evaporating plate on the bottom of the linear and the third water inlet, and a pumpback water channel is arranged between the water outlet of the water storage tank and a water return hole of the water storage box. For the water recycling device for the steam box, through the first circulating water channel, the second circulating water channel and the third circulating water channel, part of steam exhausted by the air guide cover, residual condensate water on the bottom of the liner, and residual high-temperature steam and hot water inthe steam generator are recycled to the water storage tank, through the pumpback water channel, water recycled to the water storage tank is pumped back to the water storage box for recycling use, therefore, the utilization ratio of water is improved, and the quantity of steam of an air exhaust hole is reduced.

The invention discloses a steel slag waste heat recovery and pressurized slag disintegrating system and technology. The system comprises a slag ladle tilting mechanism, a roller, a waste heat boiler, a straight-line cooler, a slag disintegrating tank, a slag ladle trolley, slag disintegrating pressurization kettles and a slag removal machine. The slag ladle tilting mechanism can tilt a slag ladle containing steel slag. The surface of the roller is provided with spirally-arranged roller teeth. The lower portion of the roller is provided with a steel slag groove. The steel slag groove is provided with a sealing cover. The steel slag in the tilted slag ladle can be conveyed into the steel slag groove through the slag removal machine, and a discharge outlet of the steel slag ladle is located above the straight-line cooler. Air is adopted as a heat exchange medium, a first fan blows air into a high-temperature material layer of the straight-line cooler, indoor-temperature air penetrates through the high-temperature steel slag from bottom to top, air is heated, and first-step heat exchange is completed. Air subjected to heat exchange through the straight-line cooler enters the roller, gas penetrates through the stirred steel slag to be further heated, and secondary heat exchange is completed. High-temperature gas is sucked to the waste heat boiler through a second fan, and therefore waste heat recovery is achieved.

The invention provides a copper oxide making method and copper oxide making equipment. The copper oxide making method includes the steps of: placing a solid copper material into a dissolving tank, and carrying out initial reaction in an environment containing 100-150g/L ammonia solution, 60-110g/L carbon dioxide, pure water and air to generate a cuprammonium solution with a copper content of 90-140g/L, in the reaction process, further refluxing the unreacted gas into the dissolving tank by a reflux unit and a circulation device, and carrying out the initial reaction again; taking 125-143DEG C steam to carry out ammonia distillation reaction on the cuprammonium solution to form basic cupric carbonate and a mixed gas, further recovering the mixed gas into the dissolving tank by the circulation device and carrying out the initial reaction again; conducting a solid-liquid separation step to separate the basic cupric carbonate; and calcining the separated basic cupric carbonate for 1-4h at 250-600DEG C so as to form copper oxide.

The invention relates to the technical field of separation and extraction of plant aromatic oil, in particular to a device for extracting the plant aromatic oil. The device comprises a steamer, a reboiler, a cooling device, an oil-water separator, a heating coil and a collector; a tower kettle is located at the bottom of a fractionating tower, the top of the steamer conveys oil-water vapor into the reboiler through a distillation air duct, and the heating coil for heating raw materials is arranged at the bottom of the steamer; the top of the cooling device is connected to the top of the reboiler through a guide pipe, the bottom of the cooling device is connected to the top of the oil-water separator through a guide pipe, the oil-water separator is provided with an oil outlet, and the oil outlet is connected with the collector; and the bottom of the oil-water separator is connected to the reboiler through a primary water return pipe, and the bottom of the tower kettle of the reboiler isconnected to the bottom of the steamer through a secondary water return pipe. The invention further discloses a process method for extracting the plant aromatic oil. By adopting the device and the process method, the oil yield is high, and energy consumption is low.

The invention belongs to the field of hydrometallurgy and particularly relates to a vanadium pentoxide preparation method. The preparation method comprises the following steps that (a) the temperature of acidic vanadium liquid rises from normal temperature to 65-75 DEG C in the preheating process of a vanadium precipitation process by using a static mixer pipe and utilizing steam heat exchange; (b) the acidic vanadium liquid subjected to heat exchange is added into an ammonium tank, ammonium sulfate is added, and stirring is performed to obtain mixed liquid; (c) the mixed liquid is added into a sedimentation tank, stirring is performed, a pH value is regulated to be 1.5-2, and steam heating is performed to reach 90 DEG C to boiling so as to obtain an ammonium poly-vanadate solution; (d) precipitate obtained after the ammonium poly-vanadate solution precipitates is washed, dried and calcinated to obtain vanadium pentoxide. The flowing state of the acidic vanadium liquid in the pipe is changed by utilizing a mixing unit body fixed in the static mixer pipe, the formation of a laminar flow bottom layer is inhibited to enable the acidic vanadium liquid to rapidly disperse in the pipe, the temperature distribution of all parts of the solution tends to be uniform, the formation of a scale layer is retarded, and the production efficiency of the vanadium pentoxide is improved.

The invention discloses an energy-saving method and an energy-saving device for a boiler. Heat exchange on high-temperature boiler feedwater at the temperature ranging from 105 DEG C to 130 DEG C is carried out through a boiler feedwater temperature reduction device, so that the temperature falls to range from 30 DEG C to 80 DEG C; then heat exchange between the boiler feedwater ranging from 30 DEG C to 80 DEG C and boiler smoke is carried out through a boiler economizer, so that the boiler exhausted smoke temperature falls to range from 100 DEG C to 130 DEG C; and the high-temperature boiler feedwater obtained after heat exchange enters a boiler system. The energy-saving device comprises the boiler and the boiler economizer, and further comprises the boiler feedwater temperature reduction device; a first boiler feedwater inlet of the boiler feedwater temperature reduction device is connected with a boiler feedwater pump, and a first boiler feedwater outlet of the boiler feedwater temperature reduction device is connected with a second boiler feedwater inlet of the boiler economizer; and a second boiler feedwater outlet of the boiler economizer is connected with a water inlet of the boiler, and the boiler feedwater temperature reduction device is further provided with a cold medium inlet and a hot medium outlet. As the energy-saving method and the energy-saving device are used for conducting energy-saving transformation on the boiler, the boiler exhausted smoke temperature can be reduced by more than 10 DEG C to 60 DEG C, and the boiler heat efficiency can be improved by more than 2%.

The invention discloses dry oil deodorizing process and equipment. Oil to be deodorized is heated by a heat exchanger and a vacuum heater to a deodorizing temperature; the oil then enters a deodorizing column for stripping deodorizing; the deodorized oil is pumped into a dry steaming column for dry steaming and is pumped into the heat exchanger to engage in heat exchange with oil to be deodorized, for cooling, thus deodorized oil is obtained; fatty acid distillate from the deodorizing column is stored in a fatty acid tank; low carbon chain molecules from the dry steaming column are removed under the vacuum action and captured and stored in the fatty acid tank. The dry oil deodorizing process has the advantages that steam quantity can be effectively reduced by 20-30%, finished oil yield is increased by 20-30%, formation rate of free fatty acid and trans-fatty acids is reduced, and the flavor of the deodorized finished oil is improved and guaranteed. The dry oil deodorizing equipment is simple and handy, small in size, lower in cost and lower in energy consumption.

The invention discloses a method for strengthening iron removal by oxygen oxidation in a solution by using a microbubble generating device. The method uses the microbubble generating device to form oxygen-containing micro-nano bubbles in a wet smelting leaching liquid or a wet smelting leaching suspension liquid to strengthen Fe2+ oxidation, and realizes the rapid oxidation iron removal of the wetsmelting leaching liquid. Compared with an existing aeration disk or an aeration tube type oxygenation, oxygen utilization rate is significantly improved, and the method has the significant advantages such as shortening the oxidation iron removal time, increasing the iron ion purification depth, expanding the production capacity and saving energy consumption.

The invention discloses an acid reducing process of rice oil. The process comprises the following steps of: with rice bran containing rice germs as raw material, preparing crude oil by a leaching method; adding phosphoric acid into the crude oil to remove non-hydratable phospholipid, adding hot water for hydrating and deguming, and then drying, de-waxing, de-coloring, separating oxygen by a de-aerator, separating acid for the first time in a film evaporator, performing physical secondary acid removing in a combined plate type tower through a heater, adding alkali liquor, carrying out soap removing separation in a centrifugal machine, washing in a water washing centrifugal machine, de-coloring again, removing odor, and finally de-greasing by a winterization filter, so as to obtain low-acid-value rice oil. The acid reducing effect of the acid reducing process is significant, the acid value of the crude oil is reduced from 28+/-1mg/g to 0.2-0.5mg/g; so low-avid-value and high-quality rice oil is possibly prepared from high-acid-value crude oil.

The invention relates to the field of thermal insulation accessories for universal furnaces, kilns, baking furnaces or distillation furnaces, in particular to a water beam with a thermal insulating sleeve for a heating furnace. The water beam with the thermal insulating sleeve for the heating furnace comprises an anchoring nail (1), a water beam (2) and a castable (3), wherein one end of the anchoring nail (1) is fixedly welded on the outer side face of the water beam (2); and the castable (3) is cast on the outer surface of the water beam (2) and is used for wrapping the anchoring nail (1). The water beam is characterized by also comprising an insulating sleeve (4) and a fiber blanket (5), wherein the insulating sleeve (4) is formed by weaving fibers and is sleeved on the outer surface of the anchoring nail (1); and the fiber blanket (5) is wrapped on the outer side face of the water beam (2). The water beam makes construction convenient, has long service life due to the adoption of refractory materials, and has a good energy-saving effect.

The invention discloses a device for reducing the feed temperature of the rare absorption liquid in the epoxy ethane absorption tower including epoxy ethane desorption tower, epoxy ethane absorption tower, refrigerating engine and rare absorption liquid cooler, wherein the refrigerating engine and rare absorption liquid cooler are orderly arranged between epoxy ethane desorption tower and the epoxy ethane absorption tower, additionally, including rare absorption liquid back cooler and low temperature water circuit, wherein the rare absorption liquid back cooler is located downstream of the rare absorption liquid cooler and upstream of the epoxy ethane absorption tower and located together with the refrigerating engine in the low temperature water circuit. The inventive operation solves the problem of higher EO content in the top tower gas phase output which is generated by EO inadequate absorption produced by the higher temperature. Rare absorption liquid feed temperature is controlled at 25-33 DEG C and the EO content in the EO top absorption tower gas is controlled <= 100ppm molar rate. The invention is mainly suitable for the Shell company technology or the epoxy ethane/glycol device similar to.