31results about How to "Will not spontaneously combust" patented technology

The invention provides a utilization system for the tail gas of a calcium carbide furnace. By the system, without purification treatment, the tail gas of the calcium carbide furnace is directly conveyed into a burner and then burnt, investment to the purification treatment of the tail gas of the calcium carbide furnace is eliminated, and hidden danger in the purification treatment of the tail gas of the calcium carbide furnace, which contains high-concentration carbon oxide (CO), is eliminated. The utilization system for the tail gas of the calcium carbide furnace comprises a heat exchanger, a pressurizing conveying fan and a lime rotary kiln, wherein the heat exchanger cools the tail gas of the calcium carbide furnace; the lime rotary kiln is provided with the burner; and a calcium carbide furnace tail gas discharge pipe, the heat exchanger, the pressurizing conveying fan and the burner are sequentially connected in series. The invention also provides a utilization method for the tail gas of the calcium carbide furnace. The method comprises the following steps of: reducing the temperature of the tail gas of the calcium carbide furnace to 200 to 400 DEG C; pressurizing the tail gas of the calcium carbide furnace to be over 3,000 Pa by using the pressurizing conveying fan; conveying the tail gas of the calcium carbide furnace into the burner of the lime rotary kiln; and burning the tail gas of the calcium carbide furnace.

The invention discloses a waterproof pulverized coal and a preparation method thereof, wherein the waterproof pulverized coal comprises components with parts by weight: calcium salt or calcium hydroxide (Ca(OH)2) 5-30 parts, stearic acid or stearate 1-10 parts or pulverized coal 60-94 parts. The method for preparing the waterproof pulverized coal comprises steps: firstly, the components with parts by weight are weighted, are added into a roller type reaction kettle to be kept to heat for 20-60 min after being heated to 110-140 DEG C, thereby obtaining the waterproof pulverized coal. The method for preparing the waterproof pulverized coal can convert pulverized coal to be a hydrophobic substance from a hydrotropic substance, greatly reduces hydrophilic performance of the pulverized coal, and can prevent volatile components in the pulverized coal from volatilizing, thereby preventing the autoignition problem of the pulverized coal during storing, prolonging service life, improving safety during storage and transportation, and having excellent application prospect.

The invention discloses a method for passivating and cooling anthracite and an integrated device thereof. The method includes the steps that 1, the anthracite subjected to pyrolysis at the temperature of 550-600 DEG C is cooled to reach 220-250 DEG C, and pretreated anthracite is obtained; 2, the pretreated anthracite reacts with inert gas to conduct oxygen activation on the anthracite so as to obtain middle-temperature passivated anthracite of 150-220 DEG C; 3, cooling water is adopted to simultaneously conduct cooling and hydration reaction on the middle-temperature passivated anthracite in the step 2 to obtain low-temperature passivated anthracite of 40-60 DEG C. The device comprises a feeding bin, a feeding conveyor, a passivating and cooling rotary device and a discharging conveyor which are connected in sequence. Passivation, destructive distillation and pyrolysis of anthracite can be effectively performed and high-grade heat energy can be recovered by adopting the method and the device.

The invention relates to the technical field of heating, and relates to a radiation-free carbon fiber electric heating cable and a heating device. The radiation-free carbon fiber electric heating cable includes a power line and a heating line. The heating line includes a carbon fiber line layer, an insulating layer, a modified PVC layer and a radiation shielding layer. The insulating layer wraps the outer wall of the carbon fiber line layer in order to prevent the current in the carbon fiber line layer from overflowing to cause danger to users. The modified PVC layer wraps the insulating layer. The modified PVC layer is resistant to high temperature, and can ensure that the radiation-free carbon fiber electric heating cable will not self-ignite when there is an accident such as short circuit. In order to avoid the damage of radiation to the human body, the radiation shielding layer is arranged outside the carbon fiber line layer. The radiation shielding layer can shield radiation inside the radiation shielding layer and prevent radiation from dispersing to cause harm to users. The heating device includes a modulator and the radiation-free carbon fiber electric heating cable, and has the above advantages compared with the prior art.

The invention discloses a preparation method of highly heatproof lubricating grease. The preparation method comprises the following steps that (1) organic acid is prepared and mixed; (2) a saponifiedsubstance is prepared, and rapidly cooled; (3) a mediate mixing agent is prepared; (4) preliminarily prepared lubricating grease is prepared; and (5) the highly heatproof lubricating grease is prepared. The invention provides the preparation method of the highly heatproof lubricating grease, the heatproof ability of the lubricating grease is greatly improved, the probability of spontaneous combustion of the lubricating grease in the using process is lowered, and the using safety of the lubricating grease is greatly enhanced.

The safe chlorothalonil smoke agent consists of chlorothalonil 25-45 weight portions, combustion promoter 25-35 weight portions and fuel 30-40 weight portions. The combustion promoter is one or several selected from ammonium nitrate, potassium nitrate, sodium nitrate, potassium perchlorate and potassium permanganate; and the fuel is one or several selected from corn cob, cow manure powder, straw and bagasse. The said agent is bagged, and thus safe without self combustion, low in cost and favorable to environment protection, and its package isolates moisture effectively.

The invention belongs to the field of active coke moving reactor dry flue gas desulfurization, and relates to an active coke regeneration system and method. The active coke regeneration system comprises a regenerator, a heating furnace, a cooler and a compressor, wherein a heating section, a desorption section and a cooling section are successively arranged on the regenerator from top to bottom; afirst nitrogen inlet is formed in the bottom of the cooling section, and a first nitrogen outlet is formed in the top of the cooling section; a second nitrogen inlet is formed in the bottom of the desorption section; and a second nitrogen outlet is formed in the top of the heating section; the heating furnace communicates with the first nitrogen outlet of the cooling section and the second nitrogen inlet of the desorption section; the cooler communicates with the second nitrogen outlet of the heating section; the compressor communicates with the cooler and the first nitrogen inlet of the cooling section; and nitrogen passes through the first nitrogen inlet, the cooling section, the first nitrogen outlet, the heating furnace, the second nitrogen inlet, the desorption section, the heating section, the second nitrogen outlet, the cooler, the compressor, and the first nitrogen inlet successively to form a closed nitrogen circulation system. According to the active coke regeneration systemand method, the technological process is simple, operation is safe and reliable, and safety and the economical efficiency of the active coke regeneration process are improved.

The invention relates to a carbonizing device which comprises a rod forming machine and a motor. The rod forming machine is provided with a screw propeller, the screw propeller is provided with a belt, the other end of the belt is hinged to the motor, the rod forming machine is provided with a directional conical sleeve, the directional conical sleeve is sleeved by an electric heating sleeve, the rod forming machine is provided with a guiding tube, a carbonizing tube is arranged in the guiding tube, the carbonizing tube is provided with a discharging tube, the discharging tube is provided with a cooling box, a water inlet is formed in the cooling box, a water outlet is formed in the cooling box, and a discharging opening is formed in the discharging tube. The carbonizing device is simple to operate, high in work efficiency and free of emission in a producing process. In addition, manufactured charcoal is high in quality and is prevented from spontaneous combustion in a high temperature without being processed.

The smoke agent consists of main agent 12-45 weight portions, combustion promoter 22-35 weight portions and fuel 30-40 weight portions. The combustion promoter is one or several selected from ammonium nitrate, potassium nitrate, sodium nitrate, potassium perchlorate and potassium permanganate; and the fuel is one or several selected from corn cob, cow manure powder, straw and bagasse. The smoke agent is prepared through sieving, crushing, stoving, mixing and bagging. It is safety without self combustion, low in cost and favorable to environment protection, and its package isolates moisture effectively.

The invention discloses a method for preparing silicon carbide crystals by taking single gas as source gas. Equipment adopted by the method comprises a low-temperature cavity, a high-temperature cavity and a crystallization cavity which are sequentially connected through gas pipelines. The method comprises the following steps: (1) preparing silane derivative gas or chlorosilane derivative gas as source gas, introducing the source gas into a low-temperature cavity, and cracking the source gas; (2) introducing a current-carrying gas through an inlet gas pipeline, bringing the cracked product in the low-temperature cavity into a high-temperature cavity, and reacting CxHy or CmHnClo with Si in the high-temperature cavity to obtain a SialphaCbeta; and (3) entraining the SialphaCbeta gas in the high-temperature cavity into the crystallization cavity by the current-carrying gas, depositing and crystallizing SialphaCbeta gas molecules on the surface of the silicon carbide seed crystal, and finally generating the silicon carbide crystal. According to the invention, the silicon carbide crystal is grown only by using single gas, is more stable than silane, and does not spontaneously ignite in the air, so that the use and maintenance cost and risk are greatly reduced.

The invention discloses a plastic particle drying device. The plastic particle drying device structurally comprises a discharging turnover cover, a discharging channel, protective bases, supporting rods, an anti-collision layer, a drying operation box, a material conveying connection channel, a material conveying turnover cover, a turnover cover shaft and a rubber strip. The material conveying connection channel comprises a protective shell, a magnetic field auxiliary sliding set, a total pushing magnetic field end, a movable magnetic field auxiliary device, a to-be-triggered total electricitybox, a cooling device, a movable overturning set and temperature sensing and transmitting equipment. The temperature sensing and transmitting equipment is installed at the position, close to the bottom end, in the protective shell. The to-be-triggered total electricity box penetrates through the side of the protective shell. Compared with the prior art, the plastic particle drying device has thebeneficial effects that in the plastic particle drying process, the equipment in the plastic particle drying device is started, the plastic particle drying device is intermittently overturned, plasticparticles of the plastic particle drying device cannot be heated excessively or heated unevenly, when the temperature is too high in the drying process, the too high temperature can be sensed, the inside cooling device is triggered to cool the interior of the plastic particle drying process in time, and the plastic particles cannot spontaneously burn by the too high temperature.

The invention discloses a fuel efficiency improvement method. The method includes the steps of: (1) preparation of a fuel additive: the fuel additive is prepared from the following raw materials by weight: 90-100 parts of lubricating oil, 0.5-2 parts of an antioxidant and 0.5-2 parts of a lanthanide rare earth metal, the lubricating oil is internal combustion engine lubricating oil with mineral oil as the base oil, preferably gasoline engine SF grade engine oil and diesel engine CD grade engine oil; the antioxidant is BHT, diphenylamine antioxidant or 3, 7-diisooctyl phenothiazine; the lanthanide rare earth metal is lanthanum, praseodymium or erbium; and (2) atomization of the fuel additive: subjecting the fuel additive to jet atomization or evaporation atomization, and sending atomizationsteam and air into a combustion chamber together for mixed combustion with fuel. The method achieves a fuel saving rate of at least 20%, at the same time discharges NOx, CO and hydrocarbon substancesin the tail gas, the tail gas emission is far superior to the state V standard, the discharge of pollutants is greatly reduced, and the carbon emissions are significantly reduced.

The invention discloses a method for preparing an electric furnace smelting nickel-iron alloy raw material by using laterite nickel ore. The method comprises the following steps of (1) uniformly mixing the laterite-nickel ore and an alkaline flux to prepare a pellet; (2) roasting the pellet in an oxidizing atmosphere; and (3) placing the roasted pellet in a reactor, and introducing mixed gas of carburizing gas and water vapor for reaction. Compared with that of an existing method for preparing an electric furnace smelting nickel-iron alloy raw material through a coal-based rotating kiln and gas-based vertical furnace method, the roasting temperature of the method is lower, the relative energy consumption is low, prepared electric furnace raw materials are relatively stable, and oxidation and spontaneous combustion are not prone to occurring.