76 results about "Thermal oxidizer" patented technology

A regenerative thermal oxidizer assembly includes a first housing member and a second housing member. The first housing member defines a regenerative portion and a combustion chamber. The second housing member defines an inlet chamber and an outlet chamber. A regenerator is disposed within the regenerative portion of the first housing member. A thermal element extends through the first housing member into the combustion chamber for providing heat to the combustion chamber for initiating combustion inside the combustion chamber. The first housing member is rotatable around a central axis relative to the second housing member for rotating the regenerator relative to the inlet chamber and the outlet chamber.

A gas flow control valve with pivotable damper blade usable in a regenerative thermal oxidizer (RTO) unit or other gas flow control application. The valve in one embodiment is a four-way valve with dual operating positions to control gas flow through four ducts coupled to the valve. To enhance positively sealing the blade to the valve housing in each position the seal, selectively actuatable electromagnetic clamps are provided which magnetically draw the blade toward the active blade end seat acted upon by gas pressure in a direction which tends to force the blade away from its seat. The blade is actuated directly by an actuator system via an operating rod to change position of the valve. A seal air system supplies pressurized air to the valve seats. A programmable controller automatically controls actuation of the electromagnets, seal air, and blade positional changes.

Provided herein are methods and systems for treating a sulfur dioxide-containing gaseous stream. The method includes combusting a tail gas in an excess of oxygen gas to yield a thermal oxidizer effluent containing sulfur dioxide and oxygen. The thermal oxidizer effluent is introduced to an oxidative catalytic converter to convert sulfur dioxide to sulfur trioxide, thereby forming an oxidized gas stream. The oxidized gas stream is routed to a quench tower and contacted with a dilute aqueous acid quench stream to yield sulfurous acid, hydrated sulfur dioxide, or both. The sulfurous acid or hydrated sulfur dioxide is oxidized with the excess of oxygen from the thermal oxidizer effluent to yield sulfuric acid.

A regenerative thermal oxidizer (RTOx) can destroy fluorinated compounds in a feed gas. The RTOx includes a combustion chamber, a burner, and a heat recovery packing bed. The burner is coupled to the combustion chamber. The burner is configured to receive the feed gas, a fuel gas, and an oxidizing gas. The fuel gas includes methane. The oxidizing gas includes oxygen. The burner is configured to combust the feed gas and the fuel gas in the presence of the oxidizing gas to produce heat an exhaust gas that includes a fluoride-containing byproduct. The heat recovery packing bed is disposed within the combustion chamber. The heat recovery packing bed is made of a ceramic material that includes aluminum oxide that is configured to absorb at least a portion of the heat produced by the combustion of the feed gas and the fuel gas.

This invention belongs to the technical field of RTO (Regenerative Thermal Oxidizer) furnaces, specifically an RTO lower chamber structure, including a support frame. An upper chamber is positioned above the support frame, and three lower chamber shells are fixedly connected to the upper chamber. Each lower chamber shell is made of fiberglass. Each lower chamber shell contains a purging component and a cooling / cleaning component. Two sets of vents are located at each end of each lower chamber shell. Connecting pipes are fixedly connected between adjacent lower chamber shells. A partition is fixedly connected above the vents in each lower chamber shell, dividing the interior of each lower chamber shell into an upper chamber and a lower chamber. A push valve component for switching the airflow conduction state is symmetrically distributed within each lower chamber shell. The use of fiberglass effectively resists corrosion in the lower chamber, while the cooling / cleaning component effectively prevents heat deformation of the lower chamber and removes organic acids from the lower chamber.

The invention discloses an efficient and low-consumption lithium battery waste gas intelligent treatment method and device, and belongs to the technical field of waste gas treatment.The method comprises the steps that pretreated waste gas is obtained through filtering of a metal filter cartridge and guided into a heat storage type thermal oxidizer, oxygenolysis is conducted in a combustion chamber, and high-temperature purified waste gas is generated; the outlet temperature data of the heat accumulating type thermal oxidizer and the circulating liquid state data of the alkaline washing tower are collected and fused into comprehensive state data; generating a quenching control instruction and an alkali washing control instruction by combining the real-time operation parameters of the quenching treatment and the alkali washing treatment; performing dry quenching treatment on the high-temperature purified waste gas according to the quenching control instruction to generate outlet dry cooling waste gas; performing alkali liquor washing on the dry-type cooling waste gas according to the alkali washing control instruction to generate standard waste gas, and discharging the standard waste gas. According to the method, an intelligent control strategy fusing upstream thermal oxidation outlet and downstream alkali washing state data is adopted, and collaborative optimization of the whole waste gas treatment process can be realized, so that the purification efficiency is improved, and the operation consumption is reduced.

The present disclosure relates to a method of using flue gas heat resulting from a combustion reaction, comprising: a) providing a fuel and an oxidant; b) preheating the fuel and the oxidant to produce a preheated fuel and a preheated oxidant; c) feeding the preheated fuel and preheated oxidant to a combustion chamber; d) heating raw materials via the combustion reaction of the preheated fuel with the preheated oxidant in the combustion chamber and generating flue gas; e) transferring at least part of the heat of the flue gas exiting the combustion chamber to an intermediate fluid, thereby producing a heated intermediate fluid; f) heating a Solid Oxide Electrolyzer Cells (SOEC) unit to a SOEC operating temperature, g) exchanging heat using at least part of the heat of the heated intermediate fluid, h) providing a steam stream at a steam stream temperature and an oxygen-containing carrier gas at an oxygen-containing carrier gas temperature, and feeding the steam stream and the oxygen-containing carrier gas to the SOEC unit to produce an oxygen-containing stream and a hydrogen-containing stream; wherein exchanging heat comprises 1. preheating the fuel to produce the preheated fuel to be fed to the combustion chamber and / or 2. preheating the oxidant to produce the preheated oxidant to be fed to the combustion chamber. The present disclosure also relates to a system of using flue gas heat from a combustion reaction.

A method for removing noxious, hazardous, toxic, mutagenic, and / or carcinogenic compounds and / or precursor compounds from a comingled gas, liquid, and / or solid stream is described. In one embodiment, the method is used to prepare the stream for feeding to an oxidizer, such as a thermal oxidizer, to reduce the amount of particulate matter discharged by the oxidizer and includes passing the stream through an ambient or chilled temperature condenser followed by an optional gas / solid separator, and one or more gas scrubbers prior to feeding to the oxidizer.

A thermal oxidizer employing an oxidation mixer, an oxidation chamber, a retention chamber and a heat dissipater forming a fluid flow path for thermal oxidation of a waste gas. In operation, the oxidation mixer facilitates a combustible mixture of the waste gas and an oxidant into an combustible waste gas stream, the oxidation chamber facilitates a primary combustion reaction of the combustible waste gas stream into an oxygenated waste gas stream, the retention chamber facilitates a secondary combustion reaction of the oxygenated waste gas stream into oxidized gases and the heat dissipator reduces the temperature of the flow of oxidized gases within the heat dissipator, which is communicated to a greenhouse gas processor that extracts greenhouse gas(es) from the vaporized oxidized gases. The greenhouse gas processor may condensate the greenhouse gas(es), acid neutralize the condensation of the greenhouse gas(es), and capture the acid neutralization of the condensation of the greenhouse gas(es).

Extreme-temperature valves that can be used in the production of activated carbon. An exemplary system includes a kiln reactor having an exhaust port, a thermal oxidizer having an input port, and a valve. The kiln reactor outputs exhaust gasses through the exhaust port. The thermal oxidizer includes an input port. The valve is connected between the exhaust port and the input port. The valve includes packing material that is at least partially thermally isolated from the exhaust gasses.

A method includes combusting a fuel with oxidizer gas to heat a fired radiant section, forming a flue gas, forming a process gas, and passing the process gas through the fired radiant section, forming a cracked gas. The flue gas is cooled in a flue gas heat recovery section. The cracked gas is cooled in a cracked gas heat recovery section. The recovery sections each comprise a multistream heat exchanger. The flue gas heat recovery section includes heat exchange structures which a use more than 35% of a total amount of heat recovered within the heat exchanger of the flue gas heat recovery section for preheating the oxidizer gas. The cracked gas heat recovery section uses more than 35% of a total amount of heat recovered within the heat exchanger of the cracked gas heat recovery section for preheating the process gas, the hydrocarbon feed, and / or the process steam.

The present disclosure relates to a regenerative thermal oxidizer comprising at least a first transfer chamber and at least a second transfer chamber, wherein the first transfer chamber comprises a first bed and the second transfer chamber comprises a second bed; at least one reaction chamber in fluid flow communication with the first transfer chamber and with the second transfer chamber, wherein waste gas is introducible into the regenerative thermal oxidizer to flow through the first bed to the reaction chamber or to flow through the second bed to the reaction chamber; and one or more first oxygen-containing gas inlet for introducing oxygen-containing gas into the regenerative thermal oxidizer positioned between at least a portion of the first bed and at least a portion of the reaction chamber or positioned between at least a portion of the second bed and at least a portion of the reaction chamber.

Provided herein are methods and systems for treating a sulfur dioxide-containing gaseous stream. The method includes combusting a tail gas in an excess of oxygen gas to yield a thermal oxidizer effluent containing sulfur dioxide and oxygen. The thermal oxidizer effluent is introduced to an oxidative catalytic converter to convert sulfur dioxide to sulfur trioxide, thereby forming an oxidized gas stream. The oxidized gas stream is routed to a quench tower and contacted with a dilute aqueous acid quench stream to yield sulfurous acid, hydrated sulfur dioxide, or both. The sulfurous acid or hydrated sulfur dioxide is oxidized with the excess of oxygen from the thermal oxidizer effluent to yield sulfuric acid.

The invention discloses an RTO heat storage type incinerator which comprises an air inlet pipe, a first induced draft fan installed at the air inlet pipe, an air outlet pipe, a first reverse blowing pipe with one end connected with the air outlet pipe, a heat exchange pipe connected with the first reverse blowing pipe, a second reverse blowing pipe connected with the heat exchange pipe, three heat storage chambers with ventilation openings, a combustion chamber and a combustor. According to the heat storage type incinerator, reverse blowing of high-temperature gas can be achieved, regional reverse blowing is achieved, so that organic sediments (carbon black and tar) and part of loose inorganic salt can be effectively treated, and heat storage ceramics can be better cleaned. After high-temperature back flushing, part of substances can be decomposed, oxidized or fall off, finally fall off in the form of dust, can be received by the dust receiving box and can be sucked away by negative pressure, so that whether the whole heat storage incineration device works normally or not can be judged according to the amount of dust received by the dust receiving box, and the back flushing effect can be monitored regularly.

Systems for thermally oxidizing contaminants in air streams comprise mixing vessels; one or more regenerative thermal oxidizers (RTOs), each comprising a combustion chamber for thermally oxidizing contaminants to yield an exhaust gas stream; exhaust gas lines for conveying portions of exhaust gas streams to mixing vessels to raise the dry bulb temperature of air streams to reduce condensation; vents for venting remaining portions of exhaust gas streams; diverters for dividing exhaust gas streams; and controllers to determine the amounts to divide exhaust gas streams to raise the dry bulb temperature. Monolithic poppet valve assemblies comprising two or more poppet valves, which can be incorporated into the systems, among other applications. Methods for reducing condensation, e.g., using the systems.

The invention discloses an underground negative pressure pipe ditch system for a textile workshop, which comprises an underground pipe ditch network, a negative pressure generation unit communicated with the underground pipe ditch network, a suction point device arranged at dust generation equipment and a dust separation and collection system, and a source thermal oxidation fire prevention subsystem is arranged outside the underground pipe ditch network. The source thermal oxidation fire prevention subsystem comprises a heat storage type thermal oxidizer and a front heat exchanger arranged in a pipeline between the underground pipe ditch network and the negative pressure generation unit, an outlet of the negative pressure generation unit is connected with a gas inlet of the heat storage type thermal oxidizer, and the front heat exchanger is used for preheating sucked gas containing fiber dust. According to the invention, dust-containing gas is preheated to 300-400 DEG C through the front heat exchanger, so that fibers are carbonized and converted into inert carbon powder, residual combustible materials are further thoroughly oxidized into COO and HO through the heat accumulating type thermal oxidizer, and three explosion elements, namely combustible materials, a fire source and oxygen, are eliminated from the source.

The utility model discloses a purging and purifying device for RTO (regenerative thermal oxidizer), which comprises a central shaft, the central shaft is of a hollow shaft structure, one end of the central shaft is provided with a rotary valve rotor synchronously rotating with the central shaft, a rotary valve stator is mounted outside the rotary valve rotor, and the side wall of the rotary valve rotor is provided with a plurality of first rotor ventilation openings and a plurality of second rotor ventilation openings. A plurality of stator ventilation openings are formed in the side wall of the rotary valve stator, a first blowing opening is formed in the upper half portion of the center shaft, first partition plates are arranged on the two sides of the first blowing opening, the lower half portion of the center shaft penetrates through the blowing air inlet cavity, and a second blowing opening is formed in the portion, penetrating through the blowing air inlet cavity, of the center shaft. The rotary valve achieves the valve purging function and has the advantages of being low in leakage rate, simple in structure, long in service life of a sealing piece, low in cost and convenient to maintain.

A gas flow control valve with pivotable damper blade usable in a regenerative thermal oxidizer (RTO) unit or other gas flow control application. The valve in one embodiment is a four-way valve with dual operating positions to control gas flow through four ducts coupled to the valve. To enhance positively sealing the blade to the valve housing in each position the seal, selectively actuatable electromagnetic clamps are provided which magnetically draw the blade toward the active blade end seat acted upon by gas pressure in a direction which tends to force the blade away from its seat. The blade is actuated directly by an actuator system via an operating rod to change position of the valve. A seal air system supplies pressurized air to the valve seats. A programmable controller automatically controls actuation of the electromagnets, seal air, and blade positional changes.

The utility model relates to an efficient waste gas preheating device for an RTO (Regenerative Thermal Oxidation) furnace, which comprises a rack, heat storage exchangers fixed at the upper end of the rack, an inspection support fixed between the heat storage exchangers, and circulating pipes fixed on the side surfaces of the heat storage exchangers. Heat of the heat accumulator can be utilized more efficiently to heat waste gas, the energy utilization rate is increased, heat release and heat accumulation of the heat accumulator are conducted at the same time, natural loss of the heat is reduced, the purpose of reheating the waste gas through the heat generated after waste gas combustion can be achieved, and efficient utilization of energy is ensured.

The utility model discloses a regenerative thermal oxidizer (RTO) incinerator heat accumulator dust blowing device, and relates to the technical field of RTO incinerators. The inner cavity of the furnace body is fixedly connected with a heat accumulator structure, the rear end of the furnace body is fixedly connected with a combustor, the rear end of the combustor is communicated with an air blower, the bottom of the furnace body is communicated with a waste gas pipe, the left side of the waste gas pipe is communicated with an air feeder, and the surface of the air feeder is communicated with an air supply pipe; and the top of the right side of the furnace body communicates with a smoke exhaust pipe. The waste gas pipe is connected with an external exhaust pipeline, waste gas is conveyed into the furnace body under the action of the air feeder, the combustor is started to conduct combustion treatment on the waste gas and heat the heat accumulator structure at the same time, and therefore follow-up input waste gas can be preheated conveniently, and the energy consumption is reduced. And the discharged waste gas enters the heat exchanger through the connecting pipe, and is discharged through the discharge pipe after heat exchange.

Example thermal oxidation apparatus, control, and associated methods are disclosed herein. An example apparatus includes a pump fluidly couplable to a pipe, the pump including a nozzle at a first end of the pump, a second end of the pump open to atmosphere, an air compressor fluidly coupled to the nozzle, and a thermal oxidizer disposed in the pump between the first end and the second end, the air compressor to provide air to the nozzle to cause suction of gas from the pipe, the thermal oxidizer to convert methane in the gas to carbon dioxide and water vapor to be vented from the second end of the pump.

This application relates to a high-efficiency regenerative thermal oxidizer, comprising an incinerator, a mixing unit, a heat transfer system, and a catalytic plate. The incinerator is a hollow structure with an inlet and an outlet, and is located on one side of the mixing unit and connected to the mixing unit by pipeline. The mixing unit is a hollow shell suitable for secondary treatment of waste gas, allowing the waste gas to mix. The heat transfer system is fixedly installed inside the mixing unit, dividing the mixing unit into upper and lower layers, and the waste gas can pass through the heat transfer system. The catalytic plate is a mesh structure with a preset thickness, and the mesh structure of the catalytic plate is filled with catalyst. The catalytic plate is located in the upper layer inside the mixing unit and at the tail end of the heat transfer system. Through the above configuration, this application can save energy while achieving high overall system removal efficiency, solving the technical problem that existing incinerators require increased fuel consumption to maintain high treatment efficiency, resulting in increased energy consumption and high overall energy consumption.

The utility model discloses a novel RTO (regenerative thermal oxidizer) waste gas treatment device, which relates to the technical field of waste gas treatment and comprises a treatment barrel, a barrel cover is arranged at the top of the treatment barrel, a liquid outlet valve is arranged at the bottom of the treatment barrel, and a burner is arranged on one side of the top of the inner side of the treatment barrel; a fan is arranged in the barrel cover, and an air delivery pipe is arranged at the top of the barrel cover; a plurality of water condensing plates are uniformly arranged at the bottom of the combustor at intervals; a filter cartridge is arranged at the other end of the gas conveying pipe; a filter plate is arranged in the filter cartridge; two fan scraping parts are symmetrically arranged at the two ends of the filter plate; movable screw rods are arranged in the two sash scraping parts, and clamping pin parts are arranged on one sides of the sash scraping parts; a reset spring is arranged at the end, close to the air conveying pipe, of the movable screw. By means of the structure, dust accumulated on the two sides of the filter plate can be rapidly scraped away, and the scraped dust can be sent out of the filter cylinder and is prevented from entering the treatment barrel to affect follow-up treatment work.

This application discloses a regenerative thermal oxidizer and a dust collection device. The regenerative thermal oxidizer includes a furnace body, a heat storage medium is disposed in a chamber of the furnace body, and a dust collection device is also disposed in the chamber. The dust collection device includes a dust collection section and a dust suction section. The dust collection section has an inlet for airflow, and the dust suction section is connected to the dust collection section for sucking up the dust collected by the dust collection section. The regenerative thermal oxidizer of this application has a dust collection device in its chamber, which can collect the dust formed by the combustion of flue gas in the furnace body in a timely manner, so as to facilitate the unobstructed flow of the heat storage medium and reduce or avoid downtime and energy loss caused by equipment maintenance.

The invention discloses an RTO device assembly construction method. The cross operation risk is reduced by standardizing procedures. The method comprises the core steps that firstly, a bottom air pipe, a steel support and a platform are installed; then lifting a lifting valve, a gas collecting chamber and a heat storage chamber in sequence; the heat storage chamber is filled with heat storage ceramics according to the structure of a bottom layer ceramic intalox saddle ring, a multi-layer MLM honeycomb ceramic module and a top layer intalox saddle ring. Hoisting a combustion chamber and a combustor; and finally, a fan, an air pipe and an accessory structure are installed. Wherein welded junctions are fixed through inner and outer aligning devices in air pipe welding, and gaps and deformation are effectively controlled. According to the method, construction is more standard and efficient, the cross operation risk is reduced, the heat storage efficiency is improved, and the method is suitable for large RTO projects.

An indexing valve for a regenerative thermal oxidizer (RTO). A valve housing includes a diverter assembly further comprising: a pipe shaft, the pipe shaft disposed through the valve housing; a diverter blade subassembly connected to the pipe shaft between the pipe shaft ends for rotating within the valve housing, the rotation of which is supported by a bearing assembly at the base; the diverter blade subassembly further comprising a pair of opposing diverter plates, each of the diverter plates curved, wherein a large-volume inlet plenum is defined between the diverter plates for receiving fluid flow from one of the ports. To aid in sealing, the corner section ends within the housing extend beyond a width of each corner and are chamfered to limit wear of the seal. Fluid flow is either atmospheric pressure or negative pressure relative to the valve housing to further aid in sealing.

A system and method for generating electricity and heat from the combustion of tail gas containing biogenic methane using a gas turbine are provided. A gas turbine can generate electricity and heat from process tail gases (comprising biomethane, but also comprising fixed gases such as carbon dioxide, nitrogen, oxygen, hydrogen, carbon monoxide, as well as trace gases) as a secondary fuel while using natural gas as the primary fuel in the gas turbine. The tail gases from biogenic methane purification processes can have heating values as low as 42 BTU / SCF. The gas turbine will reduce net energy consumption, reduce greenhouse gas emissions, and reduce operating costs for biogenic methane purification processes. The gas turbine can also destroy tail gases that would otherwise cause excessive air emissions without the use of pollution control equipment (such as a thermal oxidizer or flare).

A thermal oxidizer including an oxidation mixer, an oxidation chamber, and a retention chamber forming a fluid flow path for thermal oxidation of a waste gas. The thermal oxidizer also includes first and second electric heating elements. In operation, the first and second electric heating elements pre-heat portions of the thermal oxidizer. Once a threshold temperature has been reached, the oxidation mixer facilitates a combustible mixture of the waste gas and an oxidant into an combustible waste gas stream, the oxidation chamber facilitates a primary combustion reaction of the combustible waste gas stream into an oxygenated waste gas stream, the retention chamber facilitates a secondary combustion reaction of the oxygenated waste gas stream into oxidized gases and the heat dissipator reduces the temperature of the flow of oxidized gases within the heat dissipator.

The utility model provides roasting furnace flue gas treatment equipment, and relates to the technical field of flue gas treatment. The system comprises an SNCR (selective non-catalytic reduction) denitration device, a metallurgical coke adsorption device, an RTO (regenerative thermal oxidizer) heat storage high-temperature combustion device, a wet desulfurization device, a wet electrostatic precipitation device and an induced draft fan. The SNCR denitration device can remove nitric oxide in flue gas through dry denitration, the metallurgical coke adsorption device is used for removing part of asphalt smoke and part of benzopyrene in the flue gas, and the RTO heat storage high-temperature combustion device is used for removing residual asphalt smoke, benzopyrene and VOCS in the flue gas. And finally, sulfur dioxide and dust in the flue gas are removed through a wet desulphurization device and a wet electric dust removal device. The roasting furnace flue gas treatment equipment provided by the utility model not only can treat sulfur dioxide, dust and asphalt fume in the flue gas, but also can reduce the content of VOCS and benzopyrene, so that the flue gas treatment effect is effectively improved; and ultralow emission of flue gas is realized.

The utility model relates to an impregnation room VOC (volatile organic compound) emission treatment system which comprises an impregnation room, and a first waste gas exhaust pipe connected with a heat accumulating type incinerator is arranged on one side of the impregnation room; a top air seal blower is arranged at the top of the impregnation room, a bottom air seal blower is arranged at the bottom of the impregnation room, a glass room is arranged on the outer side of the impregnation room, and the glass room is communicated with the bottom of the impregnation room through a second waste gas exhaust pipe; a buffer box is arranged on the outer side of the glass room and communicates with the glass room. The buffer box is provided with a first air conveying pipe and a second air conveying pipe which are communicated with the interior of the buffer box, the first air conveying pipe is communicated with the bottom air seal air blower, and the second air conveying pipe is communicated with the top air seal air blower. According to the VOC emission treatment system for the impregnation room, waste gas is introduced into the top air seal air blower and the bottom air seal air blower to serve as fresh air supplement, emission of harmful gas is reduced, consumption of natural gas by the heat accumulating type incinerator is reduced, energy consumption is saved, and the production cost is reduced.