207results about How to "Increase investment cost" patented technology

The invention discloses a method for separating vanadium-titanium magnetite to extract iron, vanadium and titanium, comprising the following steps of: magnetically selecting raw magnetite, that is, acquiring iron-vanadium concentrate and tail magnetite after performing magnetic selection on the vanadium-titanium magnetite; sorting titanium concentrate from the tail magnetite, that is, acquiring the titanium concentrate after performing floating selection on the obtained tail magnetite; roasting and magnetically selecting the titanium concentrate, that is, performing enriched-titanium impurity-removing magnetic selection after roasting the titanium concentrate; finely selecting the iron-vanadium concentrate, that is, performing the magnetic selection and fine section again on the iron-vanadium concentrate obtained from magnetic selection; reducing and smelting, that is, mixing the titanium concentrate obtained from the impurity-removing process with the iron concentrate according to the beneficiation yield, adding in a reducer and soda ash to perform reduced iron and vanadium smelting process; purifying vanadium slag, that is, removing the impurity of the vanadium slag obtained by reducing and smelting by using the acidic dipping to obtain the high-quality titanium slag product with the content of TiO2 larger than 92%; and extracting vanadium from pig iron, that is, performing vanadium extraction by converter blowing on the vanadium-containing pig iron obtained by reducing and smelting to obtain the semi-steel and vanadium slag. The method not only improves the utilization ratio of titanium, iron and vanadium but also obtains the high-titanium slag product with the content of TiO2 larger than 92% so as to widen the application field of titanium.

The invention discloses an alternating-direct current series-parallel port distribution network and a comprehensive dispatching control method thereof, and belongs to the field of port distribution power and distribution network automation. The distribution network comprises a general step-down station, a branch substation or a switch-on/switch-off station and various distribution subsystems; a multi-channel feeder of the general step-down station provides alternating current power for the various distribution subsystems through the branch substation or the switch-on/switch-off station; each distribution subsystem comprises a shore electronic system, a shore bridge subsystem, a field bridge subsystem, a power charging and converting station subsystem for electric port trailers, a new energy subsystem and a production life subsystem; each distribution subsystem utilizes an alternating current distribution transformer and an AC/DC converter to construct a direct current bus of the distribution subsystem, and the direct current buses of the distribution subsystems are in direct current interconnection through direct current interconnection protection switches; each distribution subsystem is internally provided with multiple sections of direct current buses, and the multiple sections of direct current buses are in direct current interconnection through direct current interconnection protection switches. According to the alternating-direct current series-parallel port distribution network and the comprehensive dispatching control method thereof, the optimal power supply and comprehensive dispatching control of the port distribution network can be achieved.

The invention relates to a conveying device for plug transplantation, which comprises stationary rails, two movable rails and a mobile car device, wherein the stationary rail is respectively erected at the two sides of a whole seedling bed in a greenhouse, and the two movable rails bestride the two stationary rails; the movable rail consists of two sprocket wheel driving devices, and the same sides of the two movable rails are respectively fixed on a pair of movable rail moving devices; the movable rail moving devices are erected on the stationary rails and can move along the stationary rails, and the mobile car device is arranged on sprocket wheels of the two movable rails; the lower part of the mobile car device is connected with a pneumatic lifting device, and the output end of the pneumatic lifting device is connected with a pneumatic gripping device; a pneumatic protecting device is arranged below the mobile car device, and at least one of a movable rail movement detecting deviceand a mobile car detecting device is assembled; and sensors for detecting and positioning are assembled on the pneumatic lifting device, the pneumatic gripping device and the pneumatic protecting device. The invention aims to reduce the labor intensity of workers, reduce the number of the workers, improve the utilization rate of greenhouse space, and increase the number of plugs in the existing greenhouse area to increase yield.

The invention discloses a method for recovering copper ions in copper-plating cleaning solution. The method comprises the following steps of filtration pretreatment, first-stage cyclic separation, second-stage cyclic separation and chemical concentration. The method which adopts a membrane cyclic separation technique plus a chemical concentration method realizes the decomposition, concentration and complete on-line recycling of electroplating waste liquid, realizes real zero emission, is very simple and economical, and solves the problem of the industrialization of an electroplating waste liquid treatment zero-emission technique from research experiments to practical application.

The invention relates to a pivoting sliding door for vehicles, comprising a door wing (3), drive devices (2), transversal guiding devices (4, 5), and longitudinal guiding devices (7), which enable the at least one door wing (3) to move transversal to the vehicle wall and along the vehicle wall. The longitudinal guiding devices move in a transverse direction by means of the transversal guiding devices. When closed, the door is locked by a pivot part (10), which engages inside a guide (12) whereby preventing the door from being unintentionally opened. The invention is characterized in that the pivot part (10) has a guide part (11) that interacts with a guide (12) and that the guide, in the area in which the pivot part (10) interacts with the guide when the door is closed, has a circular arc section (12b) around the actual position of the rotation axis (9) of the pivot part (10).

The invention discloses an optic-electronics integrated device for treating organic wastewater through catalytic oxidation, which is characterized in that: a water inlet pipe (1), an aeration device (2), an air dispersion plate (3), an anode (4), a cathode (5), a catalyst filler (6), a light source system (7), a direct-current power supply (8) and a water outlet pipe (9); in the electrocatalysis aspect, a negative electrode is a stainless steel screen, a catalyst is filled in the screen, and a positive electrode (4) is a silicon carbide rod; in the photocatalysis aspect, an ultraviolet lamp system is adopted to serve as the light source system (7); persistent organic wastewater enters the optic-electronics integrated device through the water inlet pipe (1) for photoelectrocatalysis treatment; the aeration device (2) is opened to aerate the persistent organic wastewater through the air dispersion plate (3) so as to supplement oxygen to facilitate oxidation and fully stir the persistent organic wastewater to make the treated wastewater even; the waste water stays for 1 to 4 hours in the device; and water after the treatment is discharged through the water outlet pipe (9).

The invention discloses an anhydrous sodium sulfate preparation method and an anhydrous sodium sulfate preparation apparatus, and belongs to the anhydrous sodium sulfate preparation field. The method sequentially comprises the following steps: processing a raw sodium sulfate solution to prepare a fine sodium sulfate solution; dehydrating the fine sodium sulfate solution to prepare dry sodium sulfate; and processing the dry sodium sulfate to prepare finished sodium sulfate. The preparation apparatus comprises a nitrate solution reaction clarifier, a slurry clarifier, a non-valve filter, a rotary drum vacuum filter, a fine sodium sulfate solution storage device, a steam generation device, a multiple-effect evaporator, a centrifuge, an atmospheric condenser, a cooling tower, a cycle water pump, a Roots water ring vacuum set, a hot air drying device, a convey device, a pneumatic elevator, a nitrate storage bin and a cloth bag deduster. According to the invention, the sodium sulfate solution refining efficiency is high, the sodium sulfate solution quality is good, and the sodium sulfate solution is fully recycled; and the heat energy utilization rate in the production process is high, the production energy consumption is low, and the finished sodium sulfate has a fast convey speed and a high output.

The invention relates to a device and a method for realizing premixed jet flow continuous jetting. The device comprises at least one main tank; at least two sub-tanks connected with an inlet end of the main tank via a pipeline and a high pressure sand valve, respectively; a mortar supply pipeline connected with inlet ends of the sub-tanks via the pipeline and a low pressure sand valve; at least three sets of weight measurers arranged at the main tank and sub-tanks, respectively; a water pool or water tank having its outlet pipeline arranged with a filter, a booster pump and a control valve, wherein the filter, booster pump and control valve are connected with the main tank and each sub-tank via sub-pipelines, and the sub-pipeline is arranged therein with a high pressure water valve; a sand mixer having its inlet end connected with the water tank and an outlet of the main tank, respectively, and its outlet connected with a nozzle; and a controller electrically connected with the low pressure sand valve, high pressure sand valve and weight measurers, respectively. Through function distribution of the main tank and multiple sub-tanks, the invention realizes sand supply of each sub-tank to the main tank in turn, mortar in the main tank is always maintained in a reasonable range, and the mixing point is arranged at bottom of the main tank, thus, stable, long-time and large-flow mortar supply of premixed jet flow is realized.

The embodiment of this invention provides a virtualization EPC (Evolved Packet Core) system and a service instantiation method, can improve the definition of a service process and reduce the investment and maintenance cost. The system comprises a service chain template library, a network function resource pool and a service chain template library manager; the service chain template library comprises N service chain templates; each service chain template describes a service process; the service process comprises at least one service function point for realizing the service, and circulation relationships among the service functions; the network function resource pool comprises L atom network function entity sets and a dispatch service; each atom network function entity set is used for realizing a network function; the service chain template library manager is used for receiving service request information and determining the service chain template matched with the service; the dispatch server is used for determining the instantiation service of the atom network function entity of corresponding service chain template. The virtualization EPC system and the service instantiation method are applicable to the technical field of communication.

The invention provides a dissolving-out process for a large-sized pipeline remaining tank of diasporite bauxite ore. Processed raw materials include gibbsite and boehmite mixed bauxite ore or the diasporite bauxite ore. The dissolving-out process includes the following steps: pre-desiliconized ore pulp is mixed with circulating mother liquor at an outlet of a desiliconizing discharging groove, is preheated by a sleeve preheater, is heated to the dissolving-out temperature by a sleeve heater, and then enters a heat-preservation remaining tank for remaining; finally, flash evaporation and separation are carried out on the ore pulp by a flash evaporator. The method in the invention realizes maximization of equipment, has strong capability of processing the ore pulp, and breaks through the capability limit of a pressing and stewing dissolving-out process to process the ore pulp; moreover, energy is saved, and the heat utilizing rate is high. The multi-inner-pipe sleeve preheater and the heater are adopted to preheat and heat the bauxite ore pulp; within the operating temperature range of the process, the heat transfer coefficient can be up to 900 to 1,200 Kcal/m2.h. DEG C. Compared with the traditional dissolving-out process, the dissolving-out process in the invention can save more than 30% of the energy in a comprehensive manner.

The invention discloses a non-excavation directional drilling construction method for a municipal pipeline. The non-excavation directional drilling construction method for the municipal pipeline is mainly suitable for carrying out laying construction when various pipelines cross rivers, roads, buildings and other obstacles and an open excavation manner cannot be applied; the laying pipe diameter is 50 to 600mm; and the laying distance is 50 to 200m. The construction process comprises the steps of preparing for construction; designing a trace; staking out in survey; constructing a working pit;positioning and debugging a directional drilling machine; preparing a slurry; drilling a guiding hole; chambering step by step; welding and reinforcing a pipeline, and pulling back the pipeline; constructing an inspection well; and backfilling a foundation pit. According to the construction method provided by the invention, without influencing the original physiognomy, road traffic, river running,and greening vegetation, the penetration problem caused by the existence of a complete building at the original design pipeline excavation section is quickly solved, so that the construction land isreduced, the construction period is shortened, the construction efficiency is improved, the personnel investment is reduced, the investment cost is saved, and the laying direction, the laying depth and the laying accuracy of the pipeline are improved.

The invention aims to provide a double-loop desulfurization device for a ship. A conventional alkaline liquor spraying loop is divided into a high-pH-value alkaline liquor loop and a low-pH-value alkaline liquor loop, the waste gas of a ship power device is washed and desulfurized in sequence, and the utilization rate of alkaline liquor is improved by arranging a connection pipeline. The double-loop desulfurization device comprises a pipeline part consisting of a demisting cleaning pipeline IV, the high-pH-value alkaline liquor loop V and the low-pH-value alkaline liquor loop VI, wherein a washing tower is connected with the pipeline and is correspondingly divided into three parts namely a demisting area III, a high-pH-value alkaline liquor spraying area II and a low-pH-value alkaline liquor spraying area I from top to bottom. The waste gas of the ship flows upstream and passes through the three spraying areas, so that SOx and fine particles in the waste gas are effectively removed. The double-loop desulfurization device is compact in structure and easy to operate, the desulfurization efficiency can be effectively improved, and the operation stability is improved; moreover, the device is environment-friendly and energy-saving, and the using quantity of chemical additives can be reduced.

A device for changing channels in a digital TV reception system including an image display unit is presented. A communication link is connected to a memory unit that has two-way coupling with the channel selector of the image display unit. The memory unit is arranged to continuously store in the respective shift register of the memory unit a sequence of information, corresponding to at least one complete digital basic image and modifications between it and a next basic image, from several TV channels. A basic image pointer is associated with each shift unit of the memory unit, the basic image pointer continuously specifying a position of the basic image in the shift register associated with each shift unit, such that the selected TV channel after decompression is accessible for display on the screen by means of a control unit through the channel selector and the memory unit.

A process for the production of high-purity melamine by pyrolysis of urea at high pressure, wherein the liquid phase output from the pyrolysis reactor is sent to a downstream post-reactor, and wherein the anhydrous gaseous phase from the pyrolysis reactor and from the post-reactor are subjected to washing with molten urea for the recovery of the melamine. The purified liquid exiting the post-reactor is treated in a quenching column, in order to eliminate polycondensates, while the quenching column output is cooled. A high purity melamine is then separated by crystallization from a mother liquor, the greater part of which is recycled to the quenching column, thereby enabling a costless recovery of ammonia and melamine. The remaining mother liquor is treated for the separation of oxidized products of pyrolysis and is then sent back to the quenching column, thereby realizing the complete recovery of the melamine.

The invention relates to a method for producing a polysilicon rod, which produces the polysilicon rod by continuously introducing a mixed gas which consists of hydrogen and a silicon containing gas and serves as a raw material gas to a reactor, and reacting the raw material gas in the reactor. The method for producing the polysilicon rod comprises the following steps: enabling the molar ratio Q of the hydrogen to the silicon containing gas to satisfy a specific relational expression by regulating the gas input M of the hydrogen serving as the raw material gas, and/or regulating the gas input N of the silicon containing gas serving as the raw material gas; and when the diameter of the polysilicon rod grows to 85 to 100 mm, enabling the Q value to fluctuate in an amplitude A. The method for producing the polysilicon rod of the invention improves the conversion per pass of trichlorosilane in a reduction process, and simultaneously, reduces the direct power consumption for the reduction of the trichlorosilane and effectively reduces the production cost of the polysilicon rod.

The process of recovering organic matter component from exhaust organic gas is suitable for the conditions of relatively small exhaust amount to be recovered and treated, relatively high flow and concentration fluctuation, and dispersed exhaust source. The recovering and treating system includes site parts and movable part. The site parts are set in the gas exhaust sites to accept exhausted gas and adsorb the organic component onto the adsorbent. The movable part may be used to desorb and regenerate saturated absorbent and collect desorbed organic component for several site parts.

The invention discloses a method for strengthening sintering of high-proportion iron ore concentrate. The sintering raw material is divided into two materials and then palletized. The first material comprises a part of the iron ore concentrate, quick lime and coke powder separated from the sintering raw material, first-stage palletizing is carried out on the first material, then second-stage palletizing is carried out on the first material and the second material, and the second material comprises a part of the iron ore concentrate, quick lime, coke powder, ore fines, lime stone, dolomite and return fines. By distributing the concentrate, the quick lime and the coke powder in the two materials reasonably, the purposes of palletizing strengthening and sintering mineralizing are achieved. For sintering of an iron mine with the iron ore concentrate accounting for 50-70 percent of the total mass of the iron core, after the strengthening technology is utilized, the utilization factor of a sintering machine is improved by 0.05-0.3t/(m<2>.h), the sinter yield is improved by 1-4 percent, the drum strength is improved by 0.5-4 percent, and the output index and the quality index of sintering of the high-proportion iron ore concentrate are improved.

The invention discloses a desulfurization process of a blast furnace gas, which comprises the following steps: 1) preparing two same adsorption towers filled with molecular sieve resin, denoted as anadsorption tower A and an adsorption tower B; 2) introducing the cooled blast furnace gas into the adsorption tower A for adsorption, when the sulfur content of gas at the outlet of the adsorption tower A is more than 5 mg/m<3>, switching the blast furnace gas into an adsorption tower B for continuous adsorption, and stopping the operation of the adsorption tower A at the same time; 3) guiding outand heating a small amount of completely desulfurized coal gas, introducing the desulfurized coal gas into the adsorption tower A for high-temperature desorption regeneration, treating the gas afterthe high-temperature desorption regeneration through a recovery process of a sulfur-containing compound, and cooling the regenerated adsorption tower A for later use; and 4) alternately using the regenerated adsorption tower A and the adsorption tower B so as to complete continuous removal of the sulfur-containing compounds in the blast furnace gas. The method disclosed by the invention can realize recycling of sulfur resources, and is low in equipment investment and low in operation cost.

The invention relates to a solar energy-ground source heat pump coupling type energy supply system provided with two buried pipe groups. The solar energy-ground source heat pump coupling type energy supply system provided with the two buried pipe groups is characterized in that the energy supply system comprises a solar heat collector, a heat-storage water tank, a ground source heat pump unit, the first buried pipe group, the second buried pipe group, a building tail end device, a heat-collection circulating water pump, a heat-storage circulating water pump, a ground source side circulating water pump, a first heat-storage control valve, a second heat-storage control valve, a first ground source side control valve, a second ground source side control valve, a first pipe group flow regulation valve, a second pipe group flow regulation valve, a first pipe group heat meter and a second group pipe heat meter; the solar heat collector is sequentially connected with the heat-storage water tank and the heat-collection circulating water pump through pipelines, namely a heat collection cycle is formed, and hot water generated by solar energy is collected; and the hot water outflow end of the heat-storage water tank is sequentially connected with the first heat-storage control valve, the heat-storage circulating water pump, the first buried pipe group, the second heat-storage control valve and the backflow end of the heat-storage water tank through pipelines, so that a heat storage cycle is formed.