11537 results about "Waste gas" patented technology

The invention discloses a single-machine single-pump electric drive fracturing semitrailer. A traditional power supply semitrailer and a fracturing semitrailer are integrated in an optimized manner torealize a semitrailer simultaneously having power supply and fracturing functions; the power supply semitrailer and the fracturing semitrailer do not need to be used in a matched manner so that the single-machine single-pump electric drive fracturing semitrailer is more flexible in actual use and the oil and gas field well site layout is greatly optimized; the transportation is convenient; a working state can be reached only by using one group of high voltage cables to be connected with high voltage power supply so that the wiring mounting is faster; compared with diesel oil drive fracturing,electric drive fracturing has the advantages of small noise and no waste gas exhaust pollution; and as a driving source is electric power, compared with the diesel oil, the electric power has the advantage of lower use cost.

Disclosed is a contaminated waste steam heat recovery apparatus 10 and method therefore which includes a primary condensing unit 38, a low pressure water washing unit 26, a liquid to liquid heat exchanger 36 and a vent fan 31. Waste gas is ducted from fryer 11 to a de-super-heating chamber 14 wherein superheated steam is converted to saturated steam by spraying water into the steam using spray nozzles 15. The gas is then introduced into a vertically disposed air to liquid heat exchanger 16 and is drafted downward therethrough. As heat is removed from the waste gas, water vapor in the steam condenses and in the process, collects some of the oil and hydrocarbons present. A plurality of condensate trays 19 are disposed below the bottom end of heat exchanger 16 in a cascading fashion to collect hold the condensate in the airflow path such that it will absorb some of the heat still present in the remaining waste gas. An oil outlet 22 is provided at the top of collection basin 22 for drawing off concentrated oil 23. The waste gas is pulled into a low pressure water washer 26 where it is washed by a second set of spray nozzles 15. Waste gas and water are sucked downward through a set of turbulence inducing baffles 28. The remaining waste gas is sucked out though exhaust tube 30, using vent fan 31, and vented to the atmosphere.

The invention provides a treatment process for absorbed condensate waste gas, wherein two active carbon absorbing tanks alternately absorb waste gas; when one active carbon absorbing tank carries out waste gas absorption work, the other active carbon absorbing tank carries out carbon bed reproduction work, wherein the absorbed waste gas in waste gas absorption work is cooled; the carbon bed reproduction work comprises a step of vacuum de-sorption and a step of nitrogen de-sorption in sequence; the step of nitrogen de-sorption comprises flowing heated nitrogen at the temperature of 60-80 DEG Cthrough the carbon bed from top to bottom so that the carbon bed is deeply desorbed, and finally cooling the carbon bed by using unheated cold nitrogen so as to recover adsorptive capacity. The process is simple without providing absorbent on the spot; and the treatment process has high treatment efficiency, and can obtain pure recovery product without causing secondary pollution.

The invention relates to a method for performing purification treatment on malodorous gases and a device carrying out the same. The ultraviolet light catalysis and ozone oxygenation technologies are optimally integrated to adapt to the treatment of the obnoxious gases with different concentrations and ingredients. Waste gas enters a spraying system to be washed by water or drugs, then is filtered and dried by a demisting device, enters an ultraviolet light catalysis and ozone oxygenation system, and finally is discharged at the top. The method for performing purification treatment on the malodorous gases and the device carrying out the same have the characteristics of less investment, low operation cost, small occupied area, high treatment efficiency, wide application scope and simple operation and management.

A heat exchanger, particularly a charge air heat exchanger or exhaust gas heat exchanger, is provided for the heat exchange between a first fluid, particularly a charge air, or an exhaust gas, and a second fluid, particularly a coolant, comprising the following: heat exchanging guides for the first and second fluids, the guides being separated from each other in the core, the core having a plurality of flow channels through which the first fluid flows, and a housing that receives the flow channels and through which the second fluid flows at least one compartment lid, which is flow-connected to the flow channels, and a base that is attached to the compartment lid and that is equipped with one or more passage openings for flow channels. In order to achieve an advantageous connection of the compartment lid to the base, particularly in case the compartment lid and the base are made of different materials, the invention provides that the compartment lid is attached to the base via one or more connections as a bolted connection and/or a slotted crimping.

The invention provides a system and a method for treating waste acid gas. The system for treating the waste acid gas comprises a rich acid gas thermal reaction treating unit, a claus treating unit, a claus tail gas and poor acid gas burning unit, a burnt tail gas catalytic oxidation acid-making unit, a secondary conversion acid-making unit and a tail gas reheating unit. According to the system for treating the waste gas, the sulfur recovery rate of the whole system for treating the acid gas reaches above 99.99%, the concentration of SO2 in the tail gas emitted to atmosphere is less than 100mg/m<3>, the conversion rate and the emission concentration can meet the highest emission limit standards in the industry, and no waste liquid is discharged from the system.

The invention discloses a production method for manganese sulfate by using low-grade manganese ores. According to the method, manganese sulfate with high purity can be produced by using waste low-grade manganese ores with manganese content of 10% to 20%, manganese tailing or manganese-containing solid waste residue. The method comprises the steps of preparation of raw materials, a slaking reaction, a leaching reaction, neutralization and purification of leachate, etc. According to the invention, production of manganese sulfate is not restricted by the grade of manganese ores, and low-grade manganese oxide ores with a grade greater than 10%, manganese tailing or manganese-containing solid waste residue can be fully utilized; produced manganese sulfate has high yield and high purity and is a very important industrial fundamental product; almost no external heat supply is needed, low energy consumption is achieved, production cost is low, it does not need to turn over and mix materials in the process of the reactions, the reactions are smooth, no toxic gas is generated, and no environmental pollution is produced; discharge of three wastes (waste gas, waste water and industrial residue) reaches national discharge standards for environmental protection, and there is no dust pollution in a workshop.

A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions where water vapor or entrained water droplets are present in vehicle exhaust gases. In one embodiment, an engine controller that activates a heater of an exhaust gas sensor after an output of a particulate matter sensor exceeds a threshold value after an engine is started.

The invention relates to an electronic control method of a variable gas inlet and exhaust system of a compression ignition engine, comprising a pressurization system, a waste gas recycle system, a gas intake valve late-closing mechanism and an electronic control system. The pressurization system adopts a two-level turbocharger; the waste gas recycle system comprises a high-pressure part and a low-pressure part; the gas intake late-closing mechanism is a gas intake valve push rod which is capable of adjusting the telescopic length in a self-adapting hydraulic control mode based on self motion position, and the gas intake late-closing mechanism consists of a hydraulic push rod assembly and a hydraulic auxiliary mechanism, wherein the hydraulic push rod assembly is fixed at the upper end of an internal-combustion engine cylinder head; a hydraulic oil pump is fixed on an internal-combustion engine body; an electronic control system is controlled by an electronic control unit; and the electronic control unit judges and controls the density of intake gas in real time through a pressure sensor, a temperature sensor, a rotate speed sensor, and the like in the system. The invention can control the density of intake gas in real time, improves the performance of the internal-combustion engine, greatly reduces discharged harmful product and enhances the reliability.

The invention relates to an environmental-friendly comprehensive utilization method for a laterite-nickel ore, which comprises the following steps of: (1) grinding the laterite-nickel ore, mixing with sulfuric acid, roasting, dissolving out roasted clinker and filtering to obtain silicon dioxide and dissolution liquid; (2) deironing the dissolution liquid to obtain liquid No.2 and filter residue (iron compounds), wherein the liquid No.2 comprises aluminum, nickel and magnesium and can be treated by the step (3) or (4); (3) precipitating the aluminum in the liquid No.2 by using alkali, filtering, precipitating the nickel in filtrate by using sodium sulfide, filtering, precipitating the magnesium by using the alkali, and treating filter residue to obtain aluminum oxide, nickel hydroxide, nickel sulfide and magnesium oxide respectively; and (4) precipitating the aluminum and the nickel in the liquid No.2 by using the alkali, treating mixed slag containing the aluminum and the nickel by using the alkali to obtain aluminum hydroxide and nickel hydroxide products, and precipitating the magnesium in filtrate subjected to aluminum and nickel precipitation by using ammonia or ammonium saltto obtain a magnesium oxide product. The method is suitable for treating various laterite-nickel ores, three wastes (waste gas, waste water and waste residue) are not generated, and valuable components magnesium, nickel, iron, aluminum and silicon in the laterite-nickel ore are separated and extracted.

The invention provides a highly oil-containing monoraphidium and culture and application thereof, the monoraphidium strain is SS-B1, the classification and nomenclature of the monoraphidium is monoraphidium sp, the monoraphidium is preserved in CGMCC (China General Microbiological Culture Collection Center) on April 15, 2013, and the preservation number is CGMCC No.7479. The monoraphidium strain is able to tolerate high concentrations of CO2 and SO2, highly oil-containing biological matters can be obtained by light autotrophic growth by use of CO2 and SO2 containing waste gas or flue gas, the carbon fixation efficiency is high, cell total lipid content accounts for more than 40% of dry cell weight, and biodiesel can be produced.

A large convoluted space, such as a multi-story concourse of an airport is isolated and a chemical or biological agent in the concourse is deactivated. A plurality of deactivation gas sources (100) introduce a deactivation gas at multiple points along the concourse. Fans (66, 106) circulate the deactivation gas, sensors (110) sense concentrations of the deactivation gas at numerous points around the concourse and exhaust fans (66) exhaust air, spent deactivation gas, and some deactivation gas. A control processor (84) controls the generators, the circulation fans, and the exhaust fans in accordance with the gas concentrations sensed by the sensors to increase and decrease deactivation gas concentration in selected subregions of the concourse by increasing or decreasing generation, increasing or decreasing exhausting, or altering flow patterns among subregions.