Trapezoid tail gas filter and coating technology for honeycomb carrier
A technology of exhaust gas filter and honeycomb ceramic carrier, which is applied in the field of automobile equipment, can solve the problems of poor filtering effect, environmental pollution, and inability to combine coating slurry, etc., achieve good filtering effect, uniform coating, and improve exhaust gas purification effect Effect
Inactive Publication Date: 2017-10-27
华玉娣
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Problems solved by technology
[0002] At present, ordinary automobile exhaust filters use catalysts to interact with NO and NO in automobile exhaust. 2 react with CO to form CO 2 and N 2 These two kinds of non-polluting gases, but cars equipped with diesel engines, because the exhaust gas of diesel engines contains black smoke particles, the existing exhaust filters cannot effectively filter black smoke particles, which will cause environmental pollution
[0003] The existing honeycomb carrier coating process is to spray the slurry upward on the bottom of the ceramic carrier. The defect of this process is that the slurry is watery, which is not only difficult to coat, but also the coating slurry cannot be fully combined with the carrier. , the coated ceramic carrier is not beautiful, and the filtering effect is poor
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[0038] see Figure 1-5 , the present invention relates to a trapezoidal exhaust gas filter, which includes a filter box 1, a filter screen 2 and a ceramic honeycomb carrier 3, the left end of the filter box 1 is an exhaust gas inlet 4, and the right end is an exhaust gas outlet 5, the filter screen 2 and ceramic honeycomb The carrier 3 is arranged in the filter box 1, and the filter screen 2 is close to the exhaust gas inlet 4. The filter box 1 includes a first arc edge 1.1, a second arc edge 1.2, a first hypotenuse 1.3 and a second hypotenuse 1.4, The first arc side 1.1, the second hypotenuse 1.4, the second arc side 1.2 and the first hypotenuse 1.3 are connected end to end in sequence, and the joints adopt rounded transitions. The shape of the ceramic honeycomb carrier 3 is similar to that of the filter box 1 Correspondingly, the ceramic honeycomb carrier 3 is densely covered with air holes 3.1 along the axial direction, one end of the air holes 3.1 is an opening 3.6, and th...
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Abstract
The invention relates to a trapezoid tail gas filter. The trapezoid tail gas filter comprises a filter tank (1), wherein the filter tank (1) is internally provided with a filter screen (2) and a ceramic honeycomb carrier (3). A coating technology for the honeycomb carrier comprises the following steps: step 1, carrying out material preparation; step 2, taking slurry; step 3, carrying out coating; and step 4, carrying out firing. According to the trapezoid tail gas filter and the coating technology for the honeycomb carrier, provided by the invention, under two-grade filtering of the filter screen and the ceramic honeycomb carrier, tail gas with main components including CO, HC and NOx is subjected to a reaction to generate CO2, H2O, N2 and O2; meanwhile, micropores on a separation wall can be used for effectively filtering black smoke particles in waste gas and the black smoke particles are combusted under the action of a catalyst coating, so that the purification effect on the tail gas is improved; and the coating technology can be used for coating uniformly and the coated slurry can be sufficiently combined with the ceramic carrier so that the filtering effect of the ceramic carrier is good.
Description
technical field [0001] The invention relates to a trapezoidal tail gas filter and a coating process of a honeycomb carrier, which is used for purifying automobile tail gas. It belongs to the technical field of automobile equipment. Background technique [0002] At present, ordinary automobile exhaust filters use catalysts to interact with NO and NO in automobile exhaust. 2 react with CO to form CO 2 and N 2 These two kinds of non-polluting gases, but the automobiles equipped with diesel engines, because the exhaust gas of diesel engines contains black smoke particles, the existing exhaust filter can not effectively filter the black smoke particles, which will cause environmental pollution. [0003] The existing honeycomb carrier coating process is to spray the slurry upward on the bottom of the ceramic carrier. The defect of this process is that the slurry is watery, which is not only difficult to coat, but also the coating slurry cannot be fully combined with the carrier...
Claims
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IPC IPC(8): B01D53/86B01D53/62B01D53/56B01D53/44B01D46/10B01J23/89
CPCB01D53/865B01D46/10B01J23/8986
Inventor 华玉娣
Owner 华玉娣