72results about How to "Improvements in emission indicators" patented technology

The present invention relates to biological diesel oil and method for preparing same. The technical program is the biological diesel oil contains Jatropha crucas L. seed oil; in said Jatropha crucas L. seed oil, stearic acid content is not more than 0.4 (wt) percents. The method for preparing biological diesel oil comprises production art of the biological diesel oil and refining, improving art of the biological diesel oil; said refining, improving art comprises steps of: a, hydrating and degumming; b, alkali refining and acid removing; c, dehydrating; d intermittent deodorizing; e, emulsification and esterification. The invention has good effect of recucing stearic acid content in the Jatropha crucas L. seed oil, eliminating aromatic compound such as phthalic acid etc., improving burning ability of the biological diesel oil, reducing carbon accumulation in motor cylinder, improving power ability of motor, and discharging index. And the invention has simple producing process and low producing cost.

In the invention, a refractory insulated casing is disposed in the anacrobic pyrolyzation zone. A heating furnace is set in the tower part of the casing, a combustible gas combustion chamber is set in the middle part of the casing and in the upper part of the casing there is a hearth fire passage. In the hearth fire passage is suspended a pyrolyzation tank, on top of which a sealed charge door is corresponding to a above feeder and the top is in communication with the outlet pipe of the combustion gas and the bottom of the pyrolyzation tank is connected with a slagging means. On top of the refractory insulated casing is opened a flue outlet insulated casing is opened a flue outlet in communication with a pneumatic quench region, at the bottom of whose casing is set a fan and on its top is set an air-vent.

The invention discloses a two-phase outer cam sleeve type high-rotational-speed internal-combustion engine, and relates to the field of power of fuel gas. The invention provides a novel internal-combustion engine. Eight cylinders are annularly, symmetrically and uniformly distributed around an outwards convex inner gear ring, so that resultant force from which the outwards convex inner gear ring is suffered is zero; pistons of the cylinders directly act on the outwards convex inner gear ring through push rods; and power is transferred to an output shaft connected with a symmetric two-phase cam through a key by the outwards convex inner gear ring through the drive of a two-phase outer cam type sleeve oscillating tooth. By using the internal-combustion engine, a connecting rod and a crankshaft in a conventional internal-combustion engine are omitted; a two-phase outer cam sleeve driving mechanism of the outwards convex inner gear ring of the internal-combustion engine does not have an eccentric mass; the internal-combustion engine has the characteristic of the self balancing of inertia force and a working load; the rotational speed of the output shaft depends on the drive ratio of the drive of the oscillating tooth; if a dowel pin frame is fixedly arranged, the symmetric two-phase cam carries out output at a high speed; the internal-combustion engine can be widely applied to the field of high rotational speeds, such as engines of helicopters, and miniature engines; and when an output rotational speed is constant, the emission of harmful gas can be reduced. The internal-combustion engine is simple and compact in structure, small in axial dimension and self-balancing in stress, and is stable to run.

The invention provides a two-phase outer cam shock wave rolling transmission internal combustion engine and relates to the field of gas power. According to the novel internal combustion engine, eight cylinders are annularly symmetrically evenly distributed around a convex inner tooth ring, the resultant force which the convex inner tooth ring is subjected to is zero, and a cylinder piston directly acts on the convex inner tooth ring through a push rod, power is transmitted to an output shaft connected with a two-phase outer cam key by two-phase outer cam shock wave rolling oscillating tooth transmission through the convex inner tooth ring. According to the internal combustion engine, a connecting rod and a crankshaft in a traditional internal combustion engine are not required, a convex inner two-phase shock wave rolling transmission mechanism does not have eccentric mass and has the advantages of self balancing of inertia force and working load, and the rotating speed of the output shaft depends on the transmission ratio of oscillating tooth transmission. If an oscillating tooth brace is fixed, a two-phase outer cam performs high-speed output and can be widely applied to the fields requiring for high rotating speeds, such as helicopter engines and small generators, and discharge of harmful gas can be reduced when the output rotating speed is fixed. The internal combustion engine is simple and compact in structure, small in axial dimensions self-balancing in stress and runs stably.

A spray guide system of IC engine features that a spray guide step is made on the inner surface of omega-type combustion chamber. When the pistor is raising up in the primary spray phase, the oil beam is sprayed onto said guide step, which can reflect part of the oil beam and quickly disperse the rest along its guide arc, so realizing secondary atomizing.

The present invention is collision atomizing burning system for internal combustion engine and belongs to the field of the formation and combustion of mixed gas in internal combustion engine. The collision block makes the primary oil beam develop along the collision plane without deposition in the falling point in high dispersion speed, large distribution space range separated from the combustor, increased involved air amount and fine atomized particle, so as to form homogeneous mixed gas fast, improve the quality of the inflammable gas mixture in internal combustion engine and perfect the combustion without needing great air eddy current. The present invention can improve obviously the fume exhaust index of internal combustion engine and raise the kinetic and economic indexes.

The invention belongs to the technical field of ferronickel smelting, and particularly relates to an in-kiln desulfurization device of a drying kiln for smelting ferronickel through an RKEF method, the in-kiln desulfurization device comprises a bottom plate, a barrel is arranged above the bottom plate, and the two ends of the barrel are rotationally communicated with a kiln head cover and a kiln tail cover through bearings; the surface of the kiln head cover and the surface of the kiln tail cover are fixed to the top of the bottom plate through supporting legs. By arranging the smoke outlet pipe, the dust removal box and the dust removal mechanism, dust contained in smoke can be firstly filtered and accumulated in the dust removal box, and by arranging the dust discharge pipe and the valve, workers can collect and secondarily treat the dust, so that metal elements still existing in the dust are prevented from being wasted; by arranging the water tank, the water pump and the desulfurization mechanism, gas subjected to dust removal can be desulfurized and then filtered again, and then is conveyed into the chimney to be discharged, so that the load of subsequent purification is reduced, meanwhile, the purification effect can be obviously improved, and the emission index is qualitatively improved.

The invention relates to the technical field of nitrotoluene preparation, in particular to a method for extracting polynitrotoluene from nitrotoluene acid wastewater, mononitrotoluene, acid wastewater, a mixed nitrification in a collection tank and refluent emulsified acidic water are mixed and conveyed to a cooler for two-time cooling by a delivery pump, then the liquid is subjected to primary separation to obtain a mixed nitrification and acidic water, the acidic water is subjected to secondary separation to obtain a mixed nitrification, clear acidic water and emulsified acidic water, the clear acidic water flows to a wastewater treatment system for treatment, the emulsified acidic water flows back to the delivery pump, the primary separation is gravity settling separation, the secondaryseparation is gravity settling separation after filtration, the mixed nitrifications obtained through primary separation and secondary separation are placed into the collection tank, partial nitrification is delivered to the delivery pump, and the other mixed nitrifications are extracted polynitrotoluene products. According to the method for extracting the polynitrotoluene from the nitrotoluene acid wastewater, the content of the nitro-compound in wastewater is reduced, and the method is economic, environment-friendly, safe and convenient.

The invention relates to engine control technologies, in particular to an electronic control system and a control method for a diesel and natural gas hybrid dual-fuel engine. The electronic control system comprises CNG (compressed natural gas) cylinders, gas cylinder pressure gauges, a regulating valve, a natural gas heater, a high-pressure stop valve, a pressure reducing valve, a linear load valve, a stepper motor valve, an air inlet, a mixer, the engine, a fuel capacity limiting electromagnetic valve, a gas inlet pressure sensor, a gas inlet temperature sensor, an engine rotation speed sensor and an electronic control unit. The electronic control system and the control method have the advantages that the natural gas capacity and the ignition fuel capacity can be flexibly controlled by the electronic control system for the dual-fuel engine, and the dual-fuel engine has good emission indexes and can work by the aid of pure diesel during starting and idling; instructions can be emitted by the control system for the engine when the rotation speed of the engine is higher than a certain set value, so that the engine can be automatically switched to work in a dual-fuel working mode.

The invention discloses a two-phase shock wave movable type high-rotation speed internal combustion engine, relates to the field of fuel gas power and provides a novel internal combustion engine. According to the internal combustion engine, eight cylinders are symmetrically arranged at the periphery of an externally raised inner gear ring uniformly, so that resultant force applied to the externally raised inner gear ring is zero; pistons of the cylinders directly act on the externally raised inner gear ring through push rods; and power is transmitted by the externally raised inner gear ring through a two-phase shock wave movable teeth transmission mechanism to an output shaft which is in keyed connection with a two-phase shock wave device. By the internal combustion engine, connection rods and crank shafts in the conventional internal combustion engine are eliminated, so that an externally raised inner two-phase shock wave movable transmission mechanism does not have eccentric mass, and the internal combustion engine has the characteristics that inertia force and working load are self-balanced; the rotation speed of the output shaft depends on a movable teeth transmission ratio; if movable teeth frames are fixed, the two-phase shock wave device outputs power at high speed; the internal combustion engine can be widely applied to field such as helicopter engines and small engines in which high rotation speed is required; when the output rotation speed is fixed, emission of harmful gas can be reduced; and besides, the internal combustion engine is simple and compact in structure, has a small axial size and stably runs, and stress is self-balanced.

The invention provides a method for producing waste plastic oil through normal-pressure hydrofining. The method comprises the following steps: by using waste plastic oil obtained by pyrolyzing waste plastic as a raw material, and carrying out a gas-phase hydrogenation reaction on the waste plastic oil under the action of a heterogeneous catalyst under the reaction conditions of one atmospheric pressure and 350-400 DEG C, thereby obtaining ether hydrocarbon fuel after the reaction is completed, wherein the catalyst is prepared from the following components in parts by weight: 3 parts of cerium dioxide, 3 parts of titanium dioxide, 1 part of zirconium oxide, 5 parts of zeolite and 5 parts of carbon fibers. The invention provides the simple and efficient method, the waste plastic oil can be hydrogenated at normal temperature and normal pressure to obtain the ether hydrocarbon fuel with excellent emission indexes, the technical problems that high-pressure hydrogenation is needed and the emission indexes of the obtained diesel oil are poor in the prior art are solved, and the method has good market application prospects.

The invention provides an electrically controlled high-pressure fuel injector for realizing quick fuel cut. The electrically controlled high-pressure fuel injector is characterized in that a main fuel intake orifice (7b1) and a fuel drainage passage are formed in a control valve body (7b); one end of the main fuel intake orifice (7b1) is communicated with a high-pressure fuel passage (75b), and the other end of the main fuel intake orifice (7b1) is communicated with a pressure control room (70) and used for supplying fuel for the pressure control room (70); one end of the fuel drainage passage is communicated with the pressure control room (70), and the other end of the fuel drainage passage is communicated with an opening and closing element sealed part of the control valve body (7b) and used for draining fuel in the pressure control room (70) when the opening and closing element sealed part is unsealed; and an auxiliary fuel intake orifice (7b11) is also formed in the control valve body (7b), one end of the auxiliary fuel intake orifice (7b11) is communicated with the fuel drainage passage, and the other end of the auxiliary fuel intake orifice (7b11) is communicated with the high-pressure fuel passage (75b). By virtue of the reasonably matched aperture, the electrically controlled high-pressure fuel injector can obtain the ideal fuel injection rule that the fuel cut curve sharply drops, effectively prevents an aviation heavy-oil piston engine from post-combustion and greatly improves the economic indicators and emission allowances.

The invention provides a system for harmlessly treating sludge, which is simple in structure, low in investment, operation and maintenance cost and suitable for wide popularization and application. High-temperature flue gas exhausted by an integrated incinerator is directly used as a drying heat source of a sludge drying machine, damp and hot peculiar smell waste gas generated by sludge drying of the sludge drying machine is directly fed into the integrated incinerator to be subjected to high-temperature incineration, to-be-treated sludge is subjected to incineration treatment in a primary incineration section, odor is subjected to secondary combustion in a secondary incineration section, deodorization processing is conducted, and the integrated incinerator is provided with a secondary incineration section, namely the primary incineration section and the secondary incineration section, so that the retention time of waste gas generated by combustion in a high-temperature incineration state is ensured. Meanwhile, the invention also discloses a method for harmlessly treating the sludge.