Technical Field
The utility model relates to a [...] SSCR module and a heat removal device, is mainly applied to the SCR of the car exhaust gas post-processing industry.
Background Art
The automobile exhaust emissions can cause serious pollution of the atmosphere, the main pollutants of hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NOx) and particulate matter (PM). Since the 20 century 70 age people began efforts to control automobile exhaust emissions since, has developed increasingly stringent emission regulations. For the implementation of the "people's Republic of China of atmospheric pollution", strict control on motor vehicle pollution, the full implementation of the "light automobile emission limit value and the measurement method (China's five stage)" (GB18352.5 - 2013) and "vehicle compression ignition, gas fuel spark-ignition engine and automobile exhaust pollutant emission limits and measuring method (China III, IV, V phase)" (GB17691 - 2005) in the standard requirements of the 5th stage discharge, from National self-1 January 2017, all manufacturing, import, sales and registration of the light petrol vehicles, heavy-duty diesel vehicles (passenger car and bus, sanitation, postal use), shall be conforms to the five standard requirements. Therefore, the automobile exhaust gas purifying technology provides greater challenges, higher requirements.
SCR (Selective Catalytic Reduction) catalytic reduction technology is the traditional post-processing technology. By adopting the liquid urea of the traditional SCR technology is essentially utilize urea decomposes under the high temperature ammonia, the ammonia as a reducing agent of NOx in the engine exhaust gas in the catalyst and the temperature of the integrated under the action of the reaction, under the conditions of an ideal to produce non-toxic N2 and H2O, thereby achieving the purpose of purification. However, the traditional SCR system for liquid urea reducing agent facing the freezing in winter and heat insulation thawing problems, urea and the exhaust gas temperature under the condition of relatively high, it is easy to form a condensate of hard, further stopping urea reducing agent nozzle or piled in the exhaust pipe, cause the engine exhaust back pressure rises, to reduce the vehicle fuel economy.
Therefore, how to obtain low cost and high performance of the NH3 reducing agent supply device is particularly important. The use of metal chloride with ammonia to form coordination compounds of this characteristic, the ammonia gas is fixed down, use of the metal chloride is mainly alkaline earth metal chloride, strontium chloride, calcium chloride, magnesium chloride, and must be auxiliary additive component. Ammonia synthesis of compound material formed as a vehicle-mounted reducing agent ammonia an ammonia, when in use by heating to achieve desorption release the ammonia gas, the ammonia gas with the metal chloride to adsorb and desorb a is a reversible process.
Because the ammonia desorption of heat absorption process is, therefore a need to increase the ammonia storage device in the heat source, in the Patent number CN 102733913 B (double-stage waste heat mode [...] ammonia system) in discloses a backflow of the coolant of the engine waste heat to heat the active chu anhua compound, release leaves the ammonia of the after-treatment system. The Patent number CN 103470347 A (used for producing the ammonia of the equipment) with the introduction of the ammonia generating device, wherein the 2nd 1st heating device and heating device are respectively installed in the main memory and the secondary memory internal and independent operation. The Patent number US2012/0045379 A1 (a uses the vacuum pump from the solid ammonia in the material storage and supply ammonia gas), introduced the method of storing and delivering ammonia, ammonia material for the heating means of the built-in electric heating or external microwave heating or infrared heating. The Patent number CN 104234796 A (in particular for a motor vehicle exhaust system with optimized filling time of ammonia saves the tube) introduced with ammonia derives the channel built-in heating or enclosed heating of the ammonia storage tube.
Content of the invention
The purpose of the utility model is to provide a [...] SSCR module and a heat removal device, it can solve under low temperature conditions in winter in the north, a vehicle cold start liquid urea and the thawing time long, SCR system enters normal working condition the problem of slow, at the same time the total weight of the device is reduced, simplifying the assembly and disassembly.
The technical proposal of the utility model is realized in the way: a [...] SSCR module and a heat removal device, by the [...], full heating SSCR module taking heat from the device casing, fast interface female end, heating device the exhaust gas outlet, the stationary partition plate, the ammonia gas outlet pipe, angle valve, the exhaust gas post-processor, fast interface of the male end, the solid ammonia material, characterized in that the fixed baffle is a rectangular plate, wherein the fixing hole [...] ammonia tank, evenly arranged on the fixed baffle plate provided with a through hole, [...] through fixed baffle plate is fixed in the full heating SSCR module from the heat in the middle of the housing position, the female end is fast interface and a heat removal device of the exhaust gas inlet end, the female end of the quick interface throughout the heating SSCR module from the heat of the vertical walls of the position of the lower right corner of the front surface of the shell, and a heat removal device exhaust-outlet [...] SSCR module from the heat of the vertical walls on the back of the outer shell, and a heat removal device exhaust-outlet specific position with full heating SSCR module from the heat fast interface the front of the casing diagonally opposite of the female end position; the ammonia gas outlet pipe connected to the upper part of the SSCR [...] from the full heating module heating device at the top of the exposed, ammonia gas outlet pipe is connected to the canted valve; exhaust gas after fast on the processor interface the male end and the female end connected fast interface, an ammonia storage tank is filled with the solid ammonia material.
The [...] is cylindrical, both ends of the ellipsoidal-shaped head, can have 5L - 20L of the volume, the tank wall thickness is 2 mm - 4 mm, its shell material by ammonia corrosion resistant aluminum alloy or made of stainless steel.
The [...] through fixed baffle plate is fixed in the full heating SSCR module from the heat in the middle of the housing, the outer wall of the [...] with full heating SSCR module heating device housing the distance between the 20 mm - 50 mm.
The fixed baffle, its material may be stainless steel or aluminum alloy, the thickness is 2.5 mm - 3 mm, are evenly distributed on the fixed baffle provided with a through hole, the through hole with a pore size of 5 mm - 10 mm, and each through hole of the fixed baffle on the total area of the heating device the exhaust gas of the area of the inlet end of the 3 - 4 times.
The quick interface of the female end, is trumpet-shaped, is installed in the entire hot -like SSCR module from the heat fast interface on the housing of the female end, along the direction of the air flow and the diameter of the exhaust gas is reduced gradually, large diameter is 140 - 160 mm, the small diameter is 70 - 90 mm, length of 80 - 100 mm; mounted in the exhaust gas after the fast interface on the processor of the male end, along the direction of the air flow and the diameter of the exhaust gas is reduced gradually, large diameter for the 138 - 158 mm and, small diameter is 68 - 88 mm and, length is 80 - 100 mm.
The ammonia gas outlet pipe is mounted on the upper side of the [...], is made of stainless steel, the inner diameter of the tube is 0.5 cm - 1.5 cm, wall thickness is 2 mm - 3 mm.
The SSCR module states entire hot -like taking heat from the device housing is a cuboid structure, its material may be stainless steel, aluminum alloy or high temperature resistant flexible asbestos fiber cloth, the thickness is 1.5 mm - 2.5 mm.
The use of an ammonia synthesis material can be strontium chloride or ammonia synthesis of magnesium chloride or calcium chloride or ammonia synthesis with the NH3 chloride to form a complex.
The positive effects of the utility model is its simple structure, easily assembled and disassembled. The diameter of the pipe is not inserted, the streamlining of the pipeline connecting component, the total weight of the device is reduced 2 kg - 5 kg. The engine tail gas heating ammonia material, makes full use of the engine fuel to generate energy, and improving the thermal efficiency of the engine. And chu ammonia tank is in tail gas full-enclosed heating environment, [...] under low temperature conditions conducive to quickly reach the working pressure.
The structure is suitable for light trucks, [...] SSCR module and a heat removal device is mounted on the rear side of the SCR after treatment. In the northern winter ambient temperatures fall below -20 °C conditions, from the beginning to the vehicle cold start [...] reach normal operating pressure 2 bar, only when needed 15 min, can make the normal operation of the SCR system, the vehicles to avoid winter when cold start NOx emission standard.
Description of drawings
Figure 1 is the heating device with the post-processor is connected to the chart of [...] module of the SSCR of the present utility model.
Figure 2 is the chart of the of the present utility model.
Figure 3 is the fixed baffle schematic view of the of the present utility model.
Mode of execution
The Figure below to further illustrate the utility model as: as shown in Figure 1-3, a [...] SSCR module and a heat removal device, by the [...] 1, entire hot -like SSCR module taking heat from the device housing 2, fast interface of the female end 3, heating device exhaust gas outlet 4, the stationary partition 5, the ammonia gas outlet pipe 6, angle valve 7, the exhaust gas post-processor 8, fast interface male end 9, solid ammonia material 10 composition, characterized in that the stationary partition 5 is a rectangular plate, wherein the ammonia tank [...] fixing hole 5 - 1, the stationary partition 5 evenly arranged on the provided with a through hole 5 - 2, [...] 1 through the fixed baffle plate 5 is fixed in the full heating SSCR module taking heat from the device housing 2 in the middle of the position, fast interface of the female end 3 is an inlet end of the exhaust gas and a heat removal device, fast interface female 3 open throughout the heating SSCR module taking heat from the device housing 2 of the vertical walls of the lower right corner of the front face, and a heat removal device exhaust-outlet 4 open throughout the heating SSCR module taking heat from the device housing 2 on the rear vertical wall, a heat removal device exhaust-outlet 4 with specific position throughout the heating SSCR module taking heat from the device casing 2 positive fast interface female 3 position diagonally opposite of the; ammonia gas outlet pipe 6 is connected to the [...] 1 from the full heating above the SSCR module taking heat from the device housing 2 the top exposed, the ammonia gas outlet pipe 6 is connected to the canted valve 7; the tail gas post-processor 8 fast interface on the male end 9 and fast interface female 3 connected, [...] 1 is filled with the solid ammonia material 10.
The [...] 1 is cylindrical, both ends of the ellipsoidal-shaped head, can have 5L - 20L of the volume, the tank wall thickness is 2 mm - 4 mm, its shell by ammonia corrosion resistant material made of a metal, preferably an aluminum alloy or made of stainless steel.
The [...] 1 through the fixed baffle plate 5 is fixed in the full heating SSCR module taking heat from the device casing 2 central, [...] 1 with the outer wall of the whole heating SSCR module taking heat from the device housing 2 the distance between the 20 mm - 50 mm.
The fixed baffle 5, its material can be of stainless steel or aluminum alloy, the thickness is 2.5 mm - 3 mm, the stationary partition 5 are uniformly distributed on the through hole 5 - 2, the through hole 5 - 2 with a pore size of 5 mm - 10 mm, and each fixed baffle 5 passing through the hole 5 - 2 for a total area of heating device the exhaust gas of the area of the inlet end of the 3 - 4 times.
The quick interface of the female end 3, is trumpet-shaped, is installed in the entire hot -like SSCR module taking heat from the device casing 2 fast on the interface of the female end 3, along the diameter of the exhaust gas flow direction is reduced gradually, large diameter is 140 - 160 mm, the small diameter is 70 - 90 mm, length of 80 - 100 mm; the mounting for the exhaust gas post-processor 8 fast interface on the male end 9, along the diameter of the exhaust gas flow direction is reduced gradually, large diameter for the 138 - 158 mm and, small diameter is 68 - 88 mm and, length is 80 - 100 mm.
The ammonia gas outlet pipe 6 is installed in the [...] 1 on the upper side, is made of stainless steel, the inner diameter of the tube is 0.5 cm - 1.5 cm, wall thickness is 2 mm - 3 mm.
The SSCR module states entire hot -like taking heat from the device casing 2 is a cuboid structure, its material may be stainless steel, aluminum alloy or high temperature resistant flexible asbestos fiber cloth, the thickness is 1.5 mm - 2.5 mm.
The use of an ammonia synthesis material can be strontium chloride or ammonia synthesis of magnesium chloride or calcium chloride or ammonia synthesis with the NH3 chloride to form a complex.
A SSCR [...][...] module and a heat removal device, according to the needs of the overall arrangement of the vehicle, is installed in the exhaust gas after the rear end of the processor; in order to ensure the full heating SSCR [...] module taking heat from the safety of the device and thermal conductivity, [...] 1 is stainless steel or aluminum alloy material of the withstand voltage of the tank body, the tank body and the wall thickness of 2 - 5 mm, cylindrical, and both ends of the ellipsoidal-shaped head. [...] 1 through the fixed baffle plate 5 is fixed to the middle part of the heat removal device, in order to facilitate the heat removal device in the exhaust gas in the smooth circulation of, the stationary partition 5 should be evenly distributed a large number of through holes, the diameter of the hole is 5 mm - 10 mm, the small holes formed on each partition plate for a total area of the air inlet area of the 3 - 4 times, and the [...] 1 with the outer wall of the housing and a heat removal device 2 is the distance between the 20 mm - 50 mm; can adopt with metallic or argon arc welding or gas welding or arc welding or the manner of fixed baffle 5 with the [...] 1 and a heat removal device casing 2 of the welding of the contact part. The spacer can be made of stainless steel or aluminum alloy. Heating device housing 2 is made of stainless steel, the wall thickness of 1.5 - 2 mm. The tail gas from the heat inlet end, the outlet end of the not on one plane, the outlet end 4 is higher than the inlet end 3, so as to facilitate the exchange of heat energy. For the convenience of assembly and disassembly, the air outlet of the exhaust gas after the processor 9 with the air inlet of the heat removal device 3 by matching the size of the different diameters of the quick inserting pipe. Heating device installed only by moving the heat removal device, so that the fast interface with the post-processor rapid interface are inserted together, and a heat removal device can be fixed to the bracket on the frame of the vehicle, the process saves the mounting flange.
The use of engine exhaust gas to [...] 1 to enclosed heating, the exhaust air temperature usually in 150 °C -350 °C. From the exhaust gas after-processor 8 via the tail gas from the air inlet of the heat removal device 3 into the heating device of the outer shell 2 in, flows through the [...] 1 and a heat removal device housing 2 in the area between, and from the exhaust-gas outlet 4 discharge, thereby realizing the exhaust gas to [...] of enclosed heating, ammonia tank storing the ammonia material 10 reaches the desorption temperature, release of ammonia by ammonia gas is arranged on the upper side of the air outlet pipe [...] derived and enter the system of the next unit. Device when in normal use, angle valve is in the open state, when the device needs to be replaced when the ammonia gas in the exhaustion, angle valve closed.
The active gas of ammonia gas access and adsorption is achieved by ammonia gas outlet pipe 6 of the. Can adopt the high-purity industrial ammonia bottle, in ventilation under the environment of natural well-ventilated, through the pressure reducing valve and drying system, in the 0.2 - 0.4 mpa pressure within the outlet of the slow pace of sufficient ammonia, sufficient ammonia time is 2 - 3 H-; sufficient ammonia takes the ammonia in the front and the rear of the weighing device, recognizing the ammonia into the net quality within a predetermined range, after the completion of sufficient ammonia, the closing of the valve of the whole system, to ensure that the leakage does not occur.
The structure is suitable for light trucks, [...] SSCR module and a heat removal device is installed on the rear side of post-processing. In the northern winter ambient temperatures fall below -20 °C conditions, from the beginning to the vehicle cold start [...] reach normal operating pressure 2 bar, only when needed 15 min, can make the normal operation of the SCR system, the vehicles to avoid winter when cold start NOx emission standard.
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