5 results about "Exhaust emission" patented technology

An engine controller determines the cost of operating a combustion engine and the cost of operating an emissions after-treatment device. Accordingly, the engine controller adjusts parameters for operation of the engine and the after-treatment device to ensure cost-effective use of the engine and the after-treatment device while complying with exhaust emissions requirements. In particular, the engine controller receives the price of fuel consumed by the engine and the price of reductant used by the after-treatment device to determine the respective cost of operation. Specifically, the fuel is diesel fuel used in a diesel engine; the reductant is urea use in a urea-based Selective Catalytic Reduction (SCR) system; and the regulated exhaust emissions is nitrogen oxide (NOx) emissions. The engine operating parameters may include cooled exhaust gas recirculation airflow, fuel injection timing, fuel injection pressure, and air-to-fuel ratio. The SCR system operating parameters may include the volume of urea injected.

The invention provides an exhaust gas recirculation system in a phosphorus coal pelletizing process, and belongs to the technical field of chemical engineering. The system comprises a base, an extrusion barrel, a scraping rotary drum and a gear motor, an outer protective cover is fixedly arranged at the lower end of the extrusion barrel, the scraping rotary drum is connected with an output shaft of the gear motor, a shell of the gear motor is fixed on the outer protective cover, a plurality of scraping plates are uniformly arranged on the outer wall surface of the scraping rotary drum in the circumferential direction, a return pipe is fixedly arranged on an output shaft of the gear motor, the return pipe is fixedly connected with the scraping rotary drum, the return pipe is rotatably connected with a hollow rotary drum fixed on the base, the hollow rotary drum is communicated with the return pipe and is connected with a breather pipe, the breather pipe is communicated with the top of the outer protective cover, overflow holes in one-to-one correspondence with troughs are formed in the bottom of the scraping rotary drum, the upper ends of the troughs are communicated with the top ofthe outer protective cover, and an air blower for blowing hot air in the outer protective cover into the heating cavity is arranged on the breather pipe. The system has the advantages of avoiding exhaust emission and the like.

The invention discloses an automobile tail gas emission pretreatment device capable of purifying flue gas. The automobile tail gas emission pretreatment device capable of purifying the flue gas comprises a device shell, a device main body, a motor, a rotating shaft and a heat pump. A support rod is fixedly mounted at the bottom of the device shell. The bottom of the support rod is fixedly installed above a base. The device main body is connected to the interior of the device shell through a damping spring. The motor is fixedly mounted at the top end of the right side of the device main body. The rotating shaft connected with the top end of the motor is arranged in the device main body. A bidirectional screw rod is arranged in the middle of the rotating shaft. A limiting plate and a porousceramic carrier are further arranged outside the rotating shaft. A moving plate is connected to the outer portion of the bidirectional screw rod in a threaded mode. A dredging rod is connected to theoutside of the moving plate. According to the automobile tail gas emission pretreatment device capable of purifying the flue gas, the shock absorbing and heat dissipation work can be conveniently completed in the use process, meanwhile, the noise generated in the working process of the whole device is very small, and the outside environment is not affected.

The invention discloses an oxidation absorption system of NOx gas, solves the problems of serious environment pollution of exhaust gas generated by the prior art, and the like, and is characterized inthat an oxygen inlet pipe (10), a mixed gas inlet pipe (9) and a gas outlet pipe (2) are arranged on an absorption tank (5), a gas mixing and reaction chamber (1) is arranged between a reaction kettle and the absorption tank (5), and two Y-shaped gas pipes are respectively connected to the exhaust port of the reaction kettle and a gas inlet pipe of the absorption tank. The oxidation absorption system according to the invention has the advantages of reasonable structure, convenient installation, safe use, environmental protection, and high wide application and promotion values.

The invention discloses an attal brickkiln surplus heat using system, which comprises a fume heat interchanger. The smoke inlet nozzle of the fume heat interchanger is communicated with the cooling sect of the attal brickkiln through a pipeline, and a smoke vent is communicated with a discharge flue of the attal brickkiln through a pipeline. A water circulation pipeline of the fume heat interchanger is divided into two shunt-wound spur tracks, with one spur track being a heating spur track and combing back to a fume radiator from the outlet flowing though a heating radiator, and the other spur track being a bath spur track and combing back to the fume radiator from the outlet flowing though a second-class interchanger. One end of the second-class interchanger is communicated with a water source, and the other end is communicated with a bathroom. The invention fully make full use of the fume heat of the cooling sect to heat up warming water and bath water, thus saving the former big sum of money and devotion to building up a boiler, reducing the exhaust emission, increasing the cooling speed of the cooling sect of the attal brickkiln, and greatly improving the producing efficiency.