107results about How to "Eliminate explosion hazards" patented technology

The invention relates to a method and device for eliminating sodium chloride in the aqueous solution for the complex of ferrodextran, which is characterized in that: the ferrodextran is prepared with dextran and ferric trichloride. The sodium chloride in the ferrodextran is eliminated with an electrodialysis film, that is, eliminating the sodium chloride of the solvent by electrodialysis process in the ferrodextran complex solvent with iron content is more than or equal to 40mg/ml, sodium chloride content is more than or equal to 5.0 per cent wt and viscosity of 3.0mpa is multiplied by s (20 DEG C.) under the temperature of 10 to 90 DEG C. Compared with the technique of eliminating sodium chloride with alcohol precipitation, the invention prevents the safety hazard from flammable and combustible alcohol and reduces the production cost.

The invention relates to an energy-saving explosionproof drying furnace and a monitoring system thereof. The drying furnace is provided with a furnace body, a heating element, a trolley and a chimney, wherein the furnace body is provided with a heating chamber body; the top of the furnace body is provided with a circular hot-air generator; the heating element is positioned in the heating chamber body; the chimney is sleeved with a preheating sleeve communicated with the heating chamber body; and the bottom of the furnace body is provided with a trolley lifting mechanism. The furnace has a rational and novel structure, a unique air channel design, and is provided with the complete drying automation monitoring system, thereby having the advantages of high heat energy utilization rate, convenient operation, labor conservation and quick drying speed, ensuring that the whole drying process is effectively monitored and maintained in an optimal running state, particularly effectively eliminating the hidden trouble of a burning and explosion accident and effectively guaranteeing the safety of a person and equipment.

The invention discloses an air conditioning outdoor unit which comprises an outdoor unit shell, an L-shaped heat exchanger, a draught fan, a middle separation plate, a compressor and a variable-frequency electric control box space. The air conditioning outdoor unit is characterized in that the included angle between the axis lead of a rotary shaft of a fan motor and the center line of the long straight plate segment of the L-shaped heat exchanger is smaller than or equal to 85 degrees, an induced air channel air inlet is formed in a fan air outlet, and an induced air channel penetrates the middle partition plate and communicates with the compressor and the variable-frequency electric control box space; in the projection face which is the plane formed by the fan air outlet, the projection, on the projection plane, of the plane formed by the induced air channel air inlet and the projection, on the projection plane, of the plane formed by the fan air outlet form an overlapped face; and an air outlet is formed in the outdoor unit shell, and fan outflow air enters the compressor and the variable-frequency electric control box space through the induced air channel, flows through the compressor and a variable-frequency electric control box and then is discharged out of the outdoor unit through the air outlet. The variable-frequency electric control box and the compressor are cooled under the condition that no energy consumption is increased, the performance of the compressor and the performance of the variable-frequency electric control component are improved, the service life of the compressor and the service life of the variable-frequency electric control component are prolonged, and compared with an existing air conditioning outdoor unit with the same draught fan and the same L-shaped heat exchanger, the air conditioning outdoor unit has the beneficial effect that the heat exchange efficiency is higher.

The invention discloses an oil product storage tank safety protection device and protection method. The oil product storage tank safety protection device comprises a gas analyzing unit, an inhibitor supply unit and a control unit, the gas analyzing unit is connected with a mixed gas space formed above the liquid surface of oil product in the oil storage tank, the inhibitor supply unit is connected with the oil storage tank through an inhibitor supply pipe, and the control unit is respectively connected with the gas analyzing unit and inhibitor supply unit. The oil product storage tank safety protection device and protection method are mainly used for flammable and combustible spaces formed by oil evaporation in crude oil storage tanks and product oil tanks, the gas analyzing unit detects the concentration of the mixed gas in the space above the liquid surface of the oil product in the oil storage tank, the inhibitor supply unit fills inhibitor to the surface of the oil product in the oil storage tank, and the filled inhibitor can form a liquid film protection layer at the surface of the oil product and reduce the oil gas evaporation and volatilization of the oil product; the oil gas concentration is reduced through the evaporation of the liquid film, and accordingly the inactive protection for the oil gas space is realized.

The invention discloses a refrigerating heat pump type frostless air conditioner outdoor unit which comprises an outdoor unit shell, an evaporator, a draught fan, a middle partition plate, a compressor and frequency conversion electric control module space, a frequency conversion electric control box and a compressor. The refrigerating heat pump type frostless air conditioner outdoor unit is characterized in that an air inlet of an induced air way is arranged at an air outlet of the draught fan, the plane formed by the air outlet of the draught fan serves as the projection plane; an overlapped plane is formed by the plane formed by the air inlet of the induced air way and the projection of the plane formed by the air outlet of the draught fan on the projection plane; the induced air way penetrates the middle partition plate to communicate with the compressor and frequency conversion electric control module space; an air collecting hood is arranged on the outdoor unit shell of the compressor and frequency conversion electric control module space; the air collecting hood is connected with a heating air supply air pipe; and discharged air of the draught fan enters the compressor and frequency conversion electric control module space through the induced air way, flows through the compressor and the frequency conversion electric control box, then enters the air collecting hood and is conveyed to the air inlet side of the evaporator through the heating air supply air pipe to flow out. The refrigerating heat pump type frostless air conditioner outdoor unit has the beneficial effects that frostless heating is achieved, cooling of a compressor frequency conversion electric control module is achieved, the evaporation heating amount is larger, and the air conditioner energy efficiency is high.

The invention relates to an explosion-proof dust remover. A dust removal system comprises an air chamber, a fan, and a pipeline connected to the air chamber and the fan; the dust remover further comprises an explosion protection system and a real-time monitoring system; the explosion protection system comprises an explosion suppression device and an explosion venting device; the explosion suppression device mainly comprises a turning-plate explosion suppression valve and an explosion-suppression rotary discharge valve; the turning-plate explosion suppression valve is mounted on a dust inlet end pipeline, and the explosion-suppression rotary discharge valve is mounted in a discharge port of an air chamber ash bucket; the explosion venting device comprises an explosion venting plate and a flameless pressure relief device, and the explosion venting plate and the flameless pressure relief device are arranged on the wall of the air chamber; the real-time monitoring system comprises a PLC and a touch screen. The explosion-proof dust remover has the advantage that the explosion-proof dust remover can be used for dust removal in dust explosion environments, the operating state of the dustremover can be monitored in real time, the probability of explosion can be reduced effectively, and explosions can be isolated within certain areas in case of explosion to reduce damage to upstream personnel and equipment of the dust remover.

The invention relates to a lignite-drying and quality-improving process for preparing superheated steam from waste heat steam. The process comprises the following operation steps of: firstly, providing a heat source for a heat energy device for preparing the superheated steam from the waste heat steam by using high-temperature flue gas produced by a hot-blast stove; secondly, recycling, purifying and refining waste heat steam produced by a normally-running energy-saving cylindrical lignite-drying and quality-improving device; thirdly, preparing high-temperature superheated steam by using the heat energy device for preparing the superheated steam from the waste heat steam; fourthly, drying wet-based lignite and improving quality by using the energy-saving cylindrical lignite-drying and quality-improving device; and finally, recycling the waste heat steam produced in a drying process by the recycling, purifying and refining steps. The process uses the waste heat steam to dry the lignite and has the characteristics of reasonable design and simple, convenient and smooth route. The device has the characteristics of optimized design, compact structure, small floor area, a small amount of investment, low running cost, high yield, large dehydrating range, safe running, energy conservation, capability of saving power, lowering consumption and reducing emission, wide application range of quality-improved lignite and the like.

A double-cone rotary vacuum drying and solvent recovering system comprises a double-cone vacuum dryer, a hot water circulating pump, a hot water tank, condensers, a vacuum pump, a bag filter and a first gas-liquid separator, wherein the condensers include a shell and tube condenser and a coil condenser; a filter element of the double-cone vacuum dryer is cleaned by the nitrogen provided by a nitrogen reverse blow valve; the filter bag of the bag filter is cleaned by the nitrogen provided by a No.2 nitrogen reverse blow valve; and a check valve is arranged on a No.5 pipeline connecting the first gas-liquid separator and the vacuum pump. The system effectively prevents too high pressure in the vacuum dryer due to filter element blockage in the drying process, the bag filter can prevent the materials from blocking the valve, cleaning can be carried out without stopping the whole system, and the whole system can not undergo reverse suction and backflow so as to cause the materials to be lost even if sudden power failure happens.

The invention provides a nickel-based catalyst, a preparation method thereof and a method for catalyzing methane cracking to produce hydrogen. The catalyst includes a nickel-based composite metal oxide with a general formula shown as xX.yA.zB.(100-x-y-z)M, wherein X is Ni and /or its oxide, A is an auxiliary metal component, B is an assistant metal component, and M is a carrier. The method for catalyzing methane cracking to produce hydrogen includes: contacting methane-containing feed gas with the catalyst in a high density circulating fluidized bed reactor, and carrying out catalytic cracking reaction to obtain hydrogen containing product-gas and a deactivated catalyst, performing separation in a settler, letting the catalyst carry carbon deposit to enter a regenerator for regeneration, thus obtaining regenerated flue gas containing CO or synthetic gas, and letting the regenerated catalyst enter the reactor again. The heat generated by regeneration supplies the energy need of the whole system to realize self-heating operation. The method provided by the invention can realize large-scale continuous production of hydrogen at low price, and can effectively reduce energy consumption and save the production cost.

The invention discloses a refrigeration heat pump type frostless air conditioning outdoor unit. The refrigeration heat pump type frostless air conditioning outdoor unit includes an outdoor unit housing, an evaporator, a fan, an intermediate partition plate, a compressor and frequency conversion electrical control module space, a frequency conversion electrical control box, and a compressor. An air induction channel air inlet is arranged in a fan air outlet, a plane formed by the fan air outlet is used as a projection plane, projections of a plane formed by the air induction channel air inlet and the plane formed by the fan air outlet on the projection plane form an overlapped plane, an air induction channel passes through the intermediate partition plate and communicates with the compressor and frequency conversion electrical control module space; an air collection cover is arranged on the outdoor unit housing of the compressor and frequency conversion electrical control module space; the air collection cover is connected to a heating air supplying duct; air outflowing from the fan enters the compressor and frequency conversion electrical control module space through the air induction air channel, flows through the compressor and the frequency conversion electrical control box, and then enters the air collection cover to be conveyed to an evaporator air inlet side by the heating air supplying duct, and flows out. The refrigeration heat pump type frostless air conditioning outdoor unit can achieve frostless heating, can cool the compressor frequency electrical control module, is large in evaporation capacity and heating capacity, and is high in air conditioning energy efficiency.

The invention relates to a comprehensive partial discharge monitoring device and method. The comprehensive partial discharge monitoring device comprises an internal signal detection coil (1), an external high-configuration current transformer (3) and an external signal processing unit (2), wherein the internal signal detection coil (1) is located between a rubber insulation layer (4) and cable armor (5), and the internal signal detection coil (1) and the external high-configuration current transformer (3) are connected with the external signal processing unit (2); the internal signal detection coil (1) is used for judging whether a high-voltage cable has partial discharge; the high-configuration current transformer (3) is used for detecting the discharge capacity; the external signal processing unit (2) is used for receiving a transmission signal of the internal signal detection coil (1) and a signal of the external high-configuration current transformer (3) and computing the discharge charge quantity and judging background noise, and accurate partial discharge is realized. Compared with a relatively traditional partial discharge detection technology, the comprehensive partial discharge monitoring device and method realize new technological breakthroughs, and multiple problems of difficulty in measuring the partial discharge capacity of the internal coil and multiple interference signals of the external current transformer are solved.

A grid casing for a container having a tendency to become electrostatically charged has a basic grid made of basic grid bars forming a basic grid mesh structure. The basic grid is primarily responsible for the strength of the grid casing. Additional grid bars are provided for forming a tighter grid mesh structure relative to the basic grid mesh structure of the basic grid.

The invention discloses a method for stabilizing a gas adsorption and desorption temperature by utilizing a phase-change energy storage material. A phase-change energy storage microcapsule and an adsorbent are uniformly mixed and are filled into an adsorption column, so as to adsorb volatile organic gas. The adsorption capability of the adsorbent is kept at a high level; and in a desorption process, the temperature in the column is also kept at a relatively high temperature and desorption and regeneration of the adsorbent are easy to realize. In the whole process, the temperature is relatively stable, and adsorption and desorption processes are more controllable; and the quality of discharged gas is stable and reaches the standards.

The invention provides an exhaust hot air drying system. The exhaust hot air drying system comprises an exhaust manifold, an exhaust fan and at least two first drying units, wherein the exhaust fan is arranged at the tail end of the exhaust manifold; the first drying units comprise first unit air supply fans and first drying boxes, and are provided with first unit exhaust holes; the first drying boxes are provided with first drying box air inlets, first drying box air outlets, first drying box feed inlets and first drying box discharge holes; the first drying units are sequentially connected on the exhaust manifold through the first unit exhaust holes; air outlets of the first unit air supply fans are connected with the first drying box air inlets; the air outlets of the first unit air supply fans are connected with the first unit exhaust holes; and the first drying box air outlets are connected with air inlets of the first unit air supply fans. The exhaust hot air drying system can radically achieve the purpose of energy conservation and emission reduction, and has the advantages that the system is concise and stable, the adjustment is simple, the exhaust volume is small, the energy consumption is low, the potential safety hazard is avoided, the environmental protection treatment cost is low, and the like.

The invention discloses a frost-free outdoor unit of a refrigerating heat pump type air conditioner. The frost-free outdoor unit of the refrigerating heat pump type air conditioner comprises an outdoor unit housing, an evaporator, a blower, an intermediate separating plate, a compressor and variable-frequency electrical control module space, a variable-frequency electric control box and a compressor. The frost-free outdoor unit of the refrigerating heat pump type air conditioner is characterized in that an induced air channel air inlet is formed in an air outlet of the blower; the plane formed by the air outlet of the blower is treated as a projecting surface, and the projections, on the projecting surface, of the plane formed by the induced air channel air inlet and the plane formed by the air outlet of the blower, can form an overlapped surface; an induced air channel passes through the intermediate separating plate to communicate with the compressor and variable-frequency electric control module space; an air collecting cover which is connected with a heating air supplying pipe is arranged on the outdoor unit housing section in the compressor and variable-frequency electric control module space; air from the blower can enter the compressor and variable-frequency electric control module space through the induced air channel; the air sequentially flows through the compressor and the variable-frequency electric control box and then enters the air collecting cover to be conveyed to an air feeding side of the evaporator through the heating air supplying pipe so as to be exhausted. The frost-free outdoor unit of the refrigerating heat pump type air conditioner has the characteristics of frost-free heating, dispersing heat of a variable-frequency electric control module and the compressor, and being high in evaporating heating capacity, and high in air conditioning energy efficiency.

The invention relates to the technical field of gas stove valves, and discloses a gas stove valve anti-leakage anti-explosion combined system. The system comprises a main pipeline, a gas stove main pipeline, an anti-leakage valve arranged on the main pipeline, a gas stove and an anti-explosion valve. One end of the main pipeline communicates with one end of the gas stove main pipeline, the other end of the gas stove main pipeline communicates with a gas inlet of the gas stove, the gas stove main pipeline is provided with a branch pipeline, the free end of the branch pipeline communicates witha cooking range of the gas stove, and the anti-explosion valve is arranged on the branch pipeline. The anti-leakage valve and the anti-explosion valve are good in sealing performance, flue gas in themain pipeline can be isolated in time when a fire occurs in a kitchen, fuel gas left in the main pipeline and the branch pipeline in the kitchen is burned up, and pipeline explosion is prevented.

The invention relates to an explosion-proof lithium ion battery with low internal resistance and a supercapacitor. The lithium ion battery and the supercapacitor comprises a housing, individual cells, a heat sink, a plastic insulation sleeve, a top cover and an electrode leading-out screw mechanism. The heat sink is arranged between two adjacent individual cells. A plurality of the individual cells and the heat sink are assembled together to form a cell main body which is arranged in the housing. The plastic insulation sleeve is installed on the upper end of the cell main body. The top cover is arranged on the plastic insulation sleeve at one end of the housing. The electrode leading-out screw mechanism is connected to an electrode leading-out wire through the plastic insulation sleeve and the top cover. One side of the housing is provided with an interface. The explosion-proof lithium ion battery provided by the invention has advantages of simple and reasonable structure, strong shock resistance, low internal resistance loss, long service life, good security and the like.

The invention provides a balanced drying system, comprising an air supply and exhaust main pipeline, and at least two groups of drying units; the drying units each comprises a unit air supply fan and a drying oven, the drying units each is provided with a unit air inlet and a unit air outlet, the drying oven is provided with a drying oven air inlet and a drying oven air outlet, and all of the groups of the drying units are disposed in pairs at intervals on the air supply and exhaust main pipeline via the unit air inlet and the unit air outlet, the unit air inlet is connected with the drying oven air inlet, and the unit air outlet is connected with the drying oven air outlet. The invention has the advantages of concise and stable system, simple adjustment, low exhaust air volume, low energy consumption and the like.

A chemical process for preparing the nano-class metallic iodide film features that its substrate may be a metallic one made of Pb, Cu, Ag, or Cd, or a semiconductor material with a plated metallic film, layer, or a glass plate with a plated Ag layer, and the reactant iodine may be the organic solution of ethanol, propanol, n-hexane, propanetriol, etc, or the monomer iodine. The iodine and organic solvent take part in reaction in teflon reactor at 60-160 deg.C for 6-24 hr.

The invention discloses a methyl ethyl ketone peroxide production system. The production system comprises a reactor, a butanone feed pipe and a hydrogen peroxide burette are arranged on the reactor, afeed valve is arranged on the butanone feed pipe, and a drip valve is arranged on the hydrogen peroxide burette; a stirring device and a cooling device are arranged in the reactor, the stirring device includes a stirring paddle and a motor for driving the stirring paddle to rotate; a controller and a display connected with the controller are also included. The invention also discloses a methyl ethyl ketone peroxide production process. According to the production system, a linkage interlocking reaction device with automatic control design is adopted, and reaction speed is controlled, so thatpotential safety hazards in the production process are avoided.

The invention discloses a method for preparing titanium oxide through reducing titanium-containing complexes at normal temperature. The method is characterized in that reduction reaction occurs in a normal temperature liquid phase; the potential safety hazards due to mixing of reducing agents and air are eliminated; the reduction is performed in the liquid phase, the microscopic uniformity is high; the firing temperature is low; the time is short. The method has the following principle and steps that titanium sulfate or titanium tetrachloride and ammonium hydroxide or sodium hydroxide take a reaction to obtain titanic acid; the titanic acid reacts with oxalic acid or citric acid to form an oxalate oxytitanate complex-ion or oxytitanate citrate complex-ion solution; next, reaction is performed with zinc powder; the complex ions are reduced into low-valent titanium complex ions; the pH value of the solution is regulated to 12 by ammonium hydroxide; precipitates of dark brown color to dark violet color are generated; washing is performed for 3 to 5 times by 3 to 5 times of deionized water; the zin is washed away in an ion ZnO2<2-> form to obtain pure titanium hydroxide precipitates; oxalic acid is added until the pH is 0.5 to 1.5; drying is performed to 2 to 5 hours at 120 to 180 DEG C; the temperature is raised from room temperature to 820 to 950 DEG C by a muffle furnace; roasting is performed for 2 to 6 hours; titanium oxide spherical powder with the Ti4O7 content being 90 percent or higher is obtained.