37results about How to "Increase the low calorific value" patented technology

A clean incineration system of refuse and organic wastes and a device thereof relate to refuse incineration equipment. The incineration system mainly consists of an dry fan, a gas phase circulating incinerator, an air preheater, a dedusting/purification device, an induced draft fan and a chimney, a discharge outlet of the dry fan is connected to a feed inlet of the incinerator, a fume outlet of the incinerator is connected to the air preheater, the air preheater is connected to an air supply outlet of the dry fan, a suction opening of the dry fan is connected to a fume inlet of the dedusting/purification device, and a fume outlet of the dedusting/purification device is connected to the chimney by the induced draft fan. A dry distillation zone and a gasification zone form a gasification environment, and a first combustion zone and a second combustion zone form a combustion environment in the gas phase circulating incinerator, and a circulating air conduit and a circulating fan form a gas phase circulation loop outside the incinerator. Refuse fuel is gasified in the incinerator for combustion, and gaseous material generated in the gasification environment is allowed to have circulating gasification and combustion. The system and the device have the advantages of high burnout ratio, few pollutants generated from combustion and clean incineration of refuse.

The invention discloses a gasification system of garbage and organic waste and a device thereof, and relates to a garbage treatment device. The gasification system mainly consists of a blast drier, a gas phase circulation gasification furnace, a dusting/purification device, a compressor, a gas receiver and connection pipelines, wherein, the gasification furnace is equipped with a baking zone, a pyrolysis zone, a first gasification zone, a second gasification zone, a burnout zone and a heat storage chamber, a recirculating blower and a recirculating wind pipeline form a gas phase circulation loop outside the furnace. In the system, a discharge port of the blast drier is connected to a feed inlet of the gasification furnace, a synthesis gas output interface of the gasification furnace is connected to the dusting/purification device by an induced draft fan, the dusting/purification device is connected to the compressor, and the compressor is connected to the gas receiver. The system utilizes a technical measure of arranging the heat storage chamber in a gas phase circulation gasification furnace to enhance gasification rate and quality of refuse fuel and decompose dioxin with severe toxicity and eliminate coke tar, convert garbage and organic waste into secondary clean energy which comprises producer city coal gas, hydrogen, methanol and dimethyl ether liquefied gas.

The invention relates to a method and a device for drying pretreatment on municipal domestic refuse by municipal domestic refuse incineration technology. The invention adopts the technical proposal that the method comprises: incinerating the municipal domestic refuse, removing dust of the municipal domestic refuse, taking fume guided out of a fume extractor as a heat source for drying the domestic refuse, and utilizing the fume residual heat to dry the domestic refuse to be treated. The device and the method have the advantages that: 1) high-temperature fume generated from incineration is utilized to dry the domestic refuse, thereby fully recycling the heat energy, and having no influence on the steam generation amount and electricity generation amount synchronously; 2) the high-temperature fume generated from incineration is utilized to dry the domestic refuse, thereby reducing moisture in the refuse, improving 300 to 400 kacal/kg of lower heating value of the refuse, reducing auxiliary fuel addition amount, and reducing operation cost; and 3) after the refuse is dried, because partial moisture in the refuse is discharged, the total amount of the incinerated refuse is reduced, the scale of a incinerator can be reduced, and equipment investment is reduced.

The invention discloses a hydrolysis-aerobiosis two-section biological drying method for household garbage and relates to a treatment technique for garbage water removal and partial biological stabilization. The method comprises the following steps of: stacking the household garbage in a groove type composting reactor and performing ventilation at long intervals; neutralizing all the generated percolate until the pH is 6.8 to 7.8; refluxing the percolate to the garbage stack in the groove type composting reactor to perform hydrolysis and drying on the garbage for four days; stopping refluxing the percolate; ventilating for two times every hour and turning for one time every two days to dry the garbage after repeating for twelve days; and removing the dried garbage from the groove type composting reactor for resource utilization or directly burning the dried garbage for energy recovery. After the biological drying process, the water content of the garbage is reduced from over 70 percent to below 45 percent; the lower heat value is increased by more than one time; the efficiency of separation is increased to 80 percent; and the recycling value of the household garbage is obviously increased. The method can be widely applied to drying treatment of the household garbage with the water content over 65 percent and solid waste which is mainly the biologically degradable waste.

A biologic method to drying life garbage, it is about a kind of technology to decrease the water of life garbage and biologic stable disposal. Firstly, after sieving out the big block from the life garbage, to stack it into groove-shape compost reactor, then to cover tying straw pad and compound heat insulating coiled material, to bonds the opening rubber tail gas gathering tube with the cooling tube under the coiled material. The cooling tube is connected with gas-liquid separator, centrifugal blast blower B, gas separation unit and centrifugal blast blower A sequentially, and the centrifugal A is connected with the bottom of the reactor. Secondly, to vent the air fitfully and circularly with firm discharge, to turn one time on the second day and the fourth day respectively, to complete drying in six days, offgas enters gas separation unit after liquor condensate is eliminated by the cooling tube and gas-liquid separator, after discharging part of offgas into off-odor unit, to supply equivalent clean air, then to put the offgas into the centrifugal A for garbage venting. The quantity of offgas off odor and running cost of this invention is low, the water-content coefficient of the garbage is smaller than 40% after disposal, and it can be used for drying the life garbage with water-content coefficient 60%.

The invention discloses a sludge drying system, comprising a sludge concentrating unit, a sludge stabilizing unit and a sludge drying unit which are connected in sequence, wherein the sludge concentrating unit comprises a belt sludge concentrator which is provided with a PAM adding device, the sludge stabilizing unit is provided with a medium-temperature sludge anaerobic digestion tank which is provided with a biogas outlet, the sludge drying unit comprises a sludge centrifugal dehydrator, a sludge storage tank, a sludge high-voltage electro-osmosis unit and a sludge cake hopper which are connected in sequence, the sludge high-voltage electro-osmosis unit is provided with a deodorizing device, and the sludge cake hopper is connected with a composting device, a burning device and/or a dumping device. The sludge drying system realizes quantitative reduction, harmlessness and recycling of sludge without addition of a reagent.

The invention relates to an intermediate-temperature drying method and device for a biological film of garbage, and aims at solving the problems of low drying efficiency of an existing garbage treatment biological film drying method and negative effects caused by the treatment process on the environment. The method comprises the following steps: a, crushing the garbage; b, stowing the garbage, and covering with the film; c, bio-drying, namely, intermittently blowing air, and maintaining for 14-16 day, wherein the air blowing-in/ air stopping time ratio of an air blower is 1: 5-1: 4; slowly increasing ventilating until the final air blowing-in/ air stopping time ratio of the air blower is 1: 1.2-1: 0.8, wherein the temperature of a garbage pile is kept between 20-72 DEG C, and the oxygen content is kept between 2-8mg/L; and d, removing the garbage, namely, removing the garbage from a bio-drying bin. The invention also discloses the drying device for the abovementioned method. With the adoption of the method and the device, the temperature in the biological film drying process is increased; the calorific value of the dried garbage is increased by about 60-80%; and the water content can be decreased by about 18-23%.

The invention relates to a high temperature and high pressure steam dehydration system and method for household garbage, and belongs to the technical field of household garbage burning pretreatment. The method is characterized in that household garbage is subjected to a reaction at a certain time under the saturated vapor pressure action of a certain pressure, free water in garbage components is separated, the household garbage is discharged in an instant discharge mode under pressure after the reaction is finished, the household garbage in the discharging process is subjected to flashing, puffing and crushing, the free water in individual tissues is separated, the garbage is further dehydrated, the dehydrated garbage is subjected to incineration treatment, and liquid waste which is generated after dehydrating is subjected to anaerobic methane treatment. The household garbage household garbage steam dehydration system and method provided by the invention have the advantages that bound water of the household garbage is changed into the free water among particles, the moisture contained in the garbage are separated through gravity settling, the garbage heat value is greatly increased, the methane generated by anaerobic digestion can provide heat energy supplies such as steam, and the resources recycling is guaranteed.

The invention provides a coal additive. The coal additive comprises an emulsifier, a dispersant, a corrosion inhibitor and a penetrant. The coal additive contains O, Mg, Al, Si, S, Ca, Ba and Mn. The coal additive has the advantages that the emulsifier, the dispersant, the corrosion inhibitor and the penetrant are used and the rare earth elements improve catalyst activity so that a traditional exterior-to-interior combustion mode is changed into an interior-exterior synchronous combustion mode and thus a coal complete-combustion degree is improved and a heat loss caused by chemical incomplete combustion and mechanical incomplete combustion of coal in a furnace is reduced; and through composite carriers having mesoporous structures, catalyst activity is improved, a hydrodesulfurization process is finished and discharge amounts of flue dust and harmful gas in exhaust gas are reduced so that coal saving and sulfur fixation are realized.

The invention discloses a waste storage tank for dehydrating waste, which comprises a waste storage tank body, a discharging door arranged at one side of the waste storage tank body, a bridge crane and a waste grab bucket arranged below the top roof of the waste storage tank body, and a compressed waste dehydrator arranged below the discharging door, wherein the compressed waste dehydrator is provided with a collecting hopper with an upward opening, the collecting hopper is positioned below the discharging door, and a discharging platform is arranged outside the discharging door. By the compressed waste dehydrator, the waste storage tank can dehydrate and store crude waste generated by factories in sequence, and also can deeply dehydrate the fermented waste stored in the tank body, remarkably improves the dehydration efficiency of waste, saves the dehydration time of waste, improved the lower heat value of waste, and reduces cost; and the volume of the whole waste storage tank can be reduced.

The invention provides a preprocessing method and device which can effectively perform condensation and dehydration on high-moisture blast furnace gas from iron and steel plants, and can utilize waste heat of flue gas for heating. The method comprises the following steps of: performing heat exchange on water and the wet furnace gas entering a condensing dryer; removing part of saturated water in the furnace gas which is cooled after the heat exchange, and meanwhile, heating the cold water in the condensing dryer through the heat transfer; and removing mechanical water of the furnace gas from the condensing dryer in a demister; and warming the furnace gas through absorbing the waste heat of the flue gas in a flue gas waste heat recovery device after the furnace gas is subjected to cooling, condensation and dehydration as well as mechanical dewatering. The method and the device provided by the invention effectively solve the problems of erosion and blockage of the flue gas waste heat recovery and heat exchange device caused by high moisture of the blast furnace gas; and meanwhile, the combustion heat of the dried gas preprocessed by the method and the device is greatly improved, and thus the whole heat recovery efficiency is improved.

The invention provides a sludge high-pressure belt type deep dehydrator, which comprises a main body frame, an upper filter belt and a lower filter belt, wherein a feeding module, a filter pressing module and a discharging module are arranged in the main body frame, the filter pressing module is arranged between the feeding module and the discharging module, the feeding module comprises a uniform distribution mechanism, the uniform distribution mechanism is arranged above the lower filter belt, a feeding opening is formed above the uniform distribution mechanism, the filter pressing module comprises pressing rollers and a squeezing mechanism, the squeezing mechanism comprises a low-pressure area and a high-pressure area, a plurality of pressing rollers are distributed in the low-pressure area and the high-pressure area, a large-roller-diameter pressing roller and a small-roller-diameter pressing roller are arranged in the filter pressing module through bearings, the upper filter belt and the lower filter belt are wound on the pressing rollers, the large-roller-diameter pressing roller and the small-roller-diameter pressing roller respectively, the discharging module comprises a discharging device and a flushing mechanism, and the working surface of the flushing mechanism covers the working surfaces of the upper and lower filter belts. According to the invention, the problems of complex process flow, poor dehydration effect, low sludge treatment capacity, high investment cost, high labor cost and high operation cost of the existing sludge dehydration equipment are solved.

The present invention relates to an additive product suitable for coal-fired boilers of electric power, thermal power, petroleum, chemical and metallurgical and other industries, and particularly relates to a chromium-based boiler slag-removing coal-saving composition used for a coal fired boiler, and the chromium-based boiler slag-removing coal-saving composition consists of the following components in parts by weight: 50 to 65 parts of chromium oxide, 8 to 15 parts of copper sulfate, 5 to 9 parts of cerium oxide, 5 to 9 parts of barium molybdate, 7 to 14 parts of cobalt carbonate, 12 to 17 parts of potassium permanganate, 10 to 16 parts of manganese oxide, 12 to 17 parts of potassium carbonate, 8 to 15 parts of titanium dioxide, zinc oxide, 15 to 20 parts of zinc oxide, 6 to 10 parts of potassium chlorate, 6 to 10 parts of potassium perchlorate, 20 to 28 parts of sodium carbonate, 25 to 35 parts of active attapulgite carclazyte and 0.1 to 0.3 part of lignonaphthalenesulfonate. The chromium-based boiler slag-removing coal-saving composition is a high-tech energy-saving environmentally-friendly product which is efficient, combustion-helping, and high in coal saving ratio, and can reduce pollution, improve combustion efficiency, and extend the boiler service life; fuel gas spray old coke body on and around furnace water cooling wall tube can be cleanly removed in 3 to 5 days; and new generated coke residue body can be automatically and periodically shed off.

The invention discloses a microorganism-enhanced microbial agent capable of remarkably promoting the composting effect before household garbage incineration, and an application thereof. The enhanced microbial agent is prepared by mixing a plurality of composite microbial agents or mixing the composite microbial agents with a carrier, and the composite microbial agents comprise Lactobacillus pasteurii with the preservation number of CGMCC No.18391, Clostridium butyricum with the preservation number of CGMCC No.14499, Bacillus lentus with the preservation number of CGMCC No.18392, and Bacillus psychrophilus with the preservation number of CGMCC No. 18393. The microorganism-enhanced microbial agent can obviously promote the composting effect before household garbage incineration, increase thelow calorific value during garbage incineration and promote garbage dehydration, also can increase the abundance and content of functional microorganisms in garbage composting and accelerate the garbage fermentation process, and can rapidly start the composting process in cold regions to remarkably reduce the use of a combustion improver.

The invention belongs to the technical field of sludge treatment, and particularly relates to advanced sludge treatment equipment. The equipment comprises a solar power supply mechanism, a sludge tank, a sludge pump, a belt type sludge concentration and dehydration integrated machine, a dosing device, a dosing pump, an inclined shaftless conveyor, a sludge modification mixer, a modifier dosing device, a continuous sludge deep dehydration squeezer, an inclined shaft conveyor, a cleaning pump and a stainless steel mesh filter; the output end of the solar power supply mechanism is electrically connected to the sludge pump, the belt type sludge concentration and dehydration integrated machine, the dosing pump, the inclined shaftless conveyor, the sludge modification mixer, the continuous sludge deep dehydration squeezer, the inclined shaft conveyor and the cleaning pump separately; and the input end of the belt type sludge concentration and dehydration integrated machine respectively communicates with the sludge pump and the dosing pump through two branches, an inlet of the sludge pump communicates with the sludge tank, an inlet of the dosing pump communicates with the dosing device, and an inlet of the dosing device communicates with a plant area water supply system. The invention further relates to a using method of the advanced sludge treatment equipment.