31results about How to "Reduce fire safety hazards" patented technology

Disclosed is a process for extracting solanesol from tobacco which comprises, using moldy cigarette with moisture percentage below 50%, minced cigarette or residue tobacco leaf after collection as raw material, return flow extracting with alcohol-containing solvent, obtaining extract liquid through filtration, charging hydrocarbon solvent and alkali into the extract for saponification reaction, isolating hydrocarbon solvent phase after end of reaction, then washing the hydrocarbon solvent phase with water and 80% ethanol in sequence, finally concentrating the extracted hydrocarbon solvent phase. The extracting process requires no drying procedure and less energy consumption, the saponification and abstraction can be completed simultaneously.

The invention discloses a turmeric saponin extraction method without waste emission, which comprises the following steps: 1) cleaning the turmeric dug out of farmland with clear water; performing purification treatment of the muddy water after the cleaning to separate mud from water; and returning the mud to the farmland, and circularly cleaning the turmeric with the water until the turmeric is clean; 2) grinding the clean turmeric and performing fermentation, hydrolysis, plate-frame pressure filtration, drying and hydrolysis; 3) adding gasoline into the hydrolysate to extract saponin residue; 4) performing concentration treatment on the SO4<2-> acid liquid after the plate-frame pressure filtration, applying the product to produce potassium sulfate fertilizer, and circularly applying the water to the hydrolysis of the fermented product; and 5) performing concentration, crystallization, diaphragm pressure filtration and drying of the solution after saponin residue extraction in the step 3) to obtain the saponin. The method reduces pollutants from the source and realizes treatment and resource utilization of the pollutants which cannot be reduced from the source in various ways.

The invention provides a semiconductor wafer cleaning and drying device and in particular relates to the technical field of semiconductor wafer cleaning. The semiconductor wafer cleaning and drying device comprises a device body, a water tank, a cover tank, a cover tank moving mechanism connected to the cover tank, a wafer placement basket movably disposed in the water tank, a up-down running mechanism, an IPA bottle and a control panel. The water tank is fixed the device body. The cover tank moving mechanism is located at the two ends of the water tank. An overflow tank is fixed to the outerside of the water tank. The water tank is provided with an overflow port communicating with the overflow tank. A basket fixing bracket is fixed in the water tank. A resistivity probe interface is arranged on the water tank. A drain valve is arranged at the bottom of the water tank. The up-down running mechanism includes a mechanical arm in the water tank and a mechanical arm driving mechanism fordriving the mechanical arm. The mechanical arm driving mechanism is located at a side of the cover tank moving mechanism. The IPA bottle communicates with the inside of the cover tank through a pipe.A nitrogen gas inlet pipe also communicates with the inside of the cover tank. The semiconductor wafer cleaning and drying device combines cleaning and dehydration, avoids heating treatment and reduces production cost.

The invention discloses an antistatic composite wood-plastic material which is prepared by mixing a component A, a component B and a component C. The component A comprises a wood fiber material, the component B comprises thermoplastic plastic, and the component C comprises a flame retardant, an antistatic agent, a coupling agent, a lubricant and an inorganic filler. According to the anti-static composite wood-plastic material and the preparation method thereof, the preparation process is simple, a large number of recycled raw materials are used, the cost of the raw materials is reduced, the wood-plastic composite material is endowed with good flame-retardant and anti-static properties by adding the anti-static agent and the flame retardant, and the flame-retardant property of the wood-plastic composite material can meet the fireproof grade requirement of decorative materials; and the potential safety hazard of fire is reduced, and the potential safety hazard of static electricity to human bodies and other aspects is reduced.

The invention discloses a low-smoke flame-retardant cable and a preparation method thereof, and relates to the technical field of wires and cables. The problem is solved that a large number of polluting fumes are easily generated as a cable is burning and thus the overall application effect of the cable is poor. The low-smoke flame-retardant cable includes a cable conductor and a cable material. The cable material includes, by weight, 90-110 parts of a PVC resin material, 6-10 parts of ammonium phosphomolybdate, 1-4 parts of calcium carbonate , 3-5 parts of hydrotalcite powder, 8-12 parts of aprocessing agent , 6-15 parts of a plasticizer, 1.5-2.5 parts of a char- forming agent, 5-10 parts of a stabilizer and 0.5-2 parts of color masterbatch. When the low-smoke flame-retardant cable is burning, few polluting fumes are generated, pollution to the environment is less, and thus the cable has a good application effect.

The invention provides a pretreatment ethanol extraction method of dihydroquercetin in larix gmelini wood powder. The pretreatment ethanol extraction method comprises the following steps: with larix gmelini wood powder as a raw material, firstly pretreating the larix gmelini wood powder: leaching the larix gmelini wood powder with water, wherein the water leaching temperature is room temperature, the water leaching extraction time is 2-5 hours, and the material-water ratio is 1:5 to 1:10; then, filtering water, retaining the wet larix gmelini wood powder, adding an ethanol solution with an ethanol volume fraction of 10-95% for extracting to obtain an ethanol extracting solution, wherein the ethanol extraction method is a soaking extraction method, a reflux method or a leakage method; then concentrating and drying the ethanol extracting solution to obtain a dihydroquercetin crude product, and recrystallizing the dihydroquercetin crude product to obtain fine dihydroquercetin. The pretreatment ethanol extraction method has the main characteristics that the operation process can be directly used without drying, is economic, environmentally friendly, high in yield and suitable for industrial large-scale production, and all the solvents are recycled.

The invention discloses a fire-resistant composite floor slab and a fire-resistant performance test method thereof. The fire-resistant composite floor slab comprises a fire-resistant steel or fire-resistant weather-proof steel compression floor support plate, and concrete, wherein the fire-resistant steel or fire-resistant weather-proof steel compression floor support plate comprises shaped ribs with closed hollow parts; the concrete is poured on the floor support plate; the floor support plate is made of a base material without coating and films; after the concrete is poured, the upper surface is scraped and maintained; the concrete and the floor support plate are combined as a whole; the whole is used as the fire-resistant composite floor slab; in the initial stage of fire, the deformation of the fire-resistant composite floor slab is delayed, and the deformation amplitude is reduced; in the intermediate stage and high temperature stage, the fire-resistant composite floor slab does not collapse, and the deformation force and overall combination effect of the fire-resistant composite floor slab are maintained; after fire, the bonding performance between the concrete and the floorsupport slab is maintained, the fire-resistant composite floor slab does not fall apart, the deformation recovery degree and remaining bearing capacity of the fire-resistant composite floor slab are higher than 5%, and the fire-resistant composite floor slab still has a combination effect and integrity. The testing method comprises the following steps of: testing mechanical properties of materials, testing the shear-bonding performance and fire resistance of the fire-resistant composite floor slab, testing the residual load-bearing performance and shear-bonding performance after fire, synthesizing new shear adhesion-bonding coefficients, and summing up fire prevention safety factors.

The invention discloses an arranging construction method for six types of wires of an IDC machine room. The method comprises the steps that the use number of horizontal wire fixing modules of a wire fixing device is selected, and the wire fixing device is composed of right-angled wire fixing modules, the horizontal wire fixing modules, wiring frame reinforcing members and module connecting sheets; multiple horizontal wire fixing modules are respectively installed in the vertical direction and the horizontal direction of a wiring frame to form the first layer of the wire fixing device; six types of wires are clamped in wire slots around the wire fixing device; and the rest six types of wires are arranged in the wire fixing device according to wire arranging routing so as to complete wire arrangement. The construction steps are simplified and construction time is shortened; future capacity expansion and maintenance are facilitated, and efficiency is enhanced; a cable heat radiation problem is effectively solved, and potential fire safety hazard can be reduced; and the wire fixing device can be randomly assembled to meet the requirements of wire arrangement so that adaptability is high.

The invention discloses a light durable wood-plastic composite material for trays. The wood-plastic composite material is prepared by mixing a component A, a component B and a component C. The component A comprises a wood fiber material, thermoplastic plastic and a lubricant; the component B comprises a flame retardant, an antistatic agent, a filler and an ACR modified toughening agent; and the component C comprises an expanding agent and a pigment. According to the light durable wood-plastic composite material for the trays and the preparation method of the light durable wood-plastic composite material, a preparation process is simple, raw material cost is low, environmental protection is achieved, the flame retardance and the antistatic property of the material are good, potential safetyhazards of fire disasters are reduced, potential safety hazards caused by static electricity to human bodies and other aspects are reduced, and high safety is realized; the ACR modified toughening agent is added for modification and toughening, so the toughness and wear resistance of the material are improved, the wear resistance is optimized, the service life is prolonged; and by using the expanding agent, the defects of internal gaps, cavities and surfaces are reduced, internal pressure is maintained, the material is expanded while the performance of the material is ensured, and the weightof the material is reduced.

The embodiment of the invention provides a digital simulation temperature safety monitoring method, device and system and a storage medium, and can solve the problems that flame monitoring of an existing incinerator is not in place, and if the flame temperature is too high, a fire disaster is extremely likely to be caused. The digital simulation temperature safety monitoring method can comprise the following steps: acquiring the flame temperature of a hearth; and under the condition that the flame temperature of the hearth is larger than a preset temperature, sending an early warning temperature simulation instruction to a target mobile terminal, wherein the target mobile terminal is a mobile terminal associated with the hearth, and the early warning temperature simulation instruction is used for controlling a battery management system of the target mobile terminal, so as to enable the target mobile terminal to reach the target temperature to carry out fire disaster early warning.

The invention discloses a wet impinging stream based oil fume purification device and belongs to the technical field of oil fume purification. The wet impinging stream based oil fume purification device is provided with an oil fume impinging box and an oil fume separating box, wherein an oil fume impinging area is formed in the oil fume impinging box, and an oil fume separating area is formed in the oil fume separating box; the oil fume separating box is a square box body provided with a square water tank at the lower part, the size of the water tank is smaller than that of the body of the oil fume separating box, the oil fume impinging box is tightly attached to the oil fume separating box, an oil fume impinging area is formed in the middle of the oil fume impinging box, a plurality of groups of jet pipes are arranged in the oil fume impinging area, each group of jet pipes are oppositely arranged in the same plane and oppositely provided with jet holes, and the jet pipes are connected with a control cabinet through a jet liquid pipeline. The wet impinging stream based oil fume purification device has the advantages as follows: based on technical advantages of mass transfer enhancement of impinging stream, the impinging stream technology and an oil fume purification process are combined, so that the developed oil fume purification device remarkably increases emission purification rate of kitchen oil fume; besides, due to the fact that a jet liquid contains washing liquid components, the device does not need cleaning.