Post-treatment system, desulfurization device thereof, control method and storage medium

The technology of a post-treatment device and a desulfurization device is applied in the electronic control of the exhaust gas treatment device, the diagnosis device of the exhaust gas treatment device, and the exhaust gas treatment. Inconvenient vehicle layout and other issues
CN113107644AActive Publication Date: 2021-07-13WEICHAI POWER CO LTD +1
8 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WEICHAI POWER CO LTD
Publication Date
2021-07-13

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a post-treatment system, a desulfurization device thereof, a control method and a storage medium. The desulfurization device comprises a renewable sulfur trap, a storage type sulfur trap and a first three-way valve, and the renewable sulfur trap and the first three-way valve are sequentially arranged at the upstream of a main post-treatment device along the exhaust flow direction. An inlet of the first three-way valve communicates with an outlet of the renewable sulfur trap, a first outlet of the first three-way valve communicates with an inlet of the main post-treatment device, a second outlet of the first three-way valve is connected with a bypass pipeline, and a storage type sulfur trap is arranged on the bypass pipeline. According to the desulfurization device, the toxicity to the main post-treatment device during regeneration of the renewable sulfur trap can be avoided, the regeneration interval of the renewable sulfur trap does not need to be prolonged, the volume of the renewable sulfur trap does not need to be increased, and the exhaust back pressure is not influenced during non-regeneration; and the storage type sulfur trap is only used for trapping sulfide released during regeneration of the renewable sulfur trap, so that the storage type sulfur trap is long in service life and does not need to be frequently replaced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of engine aftertreatment, and in particular to an aftertreatment system, a desulfurization device, a control method and a storage medium thereof. Background technique

[0002] Diesel engine aftertreatment system is prone to sulfur poisoning, which affects the adsorption of NOx, resulting in substandard emissions. In order to reduce the damage of sulfur dioxide, hydrogen sulfide, etc. to post-processing components, sulfur traps are generally installed upstream of post-processing devices, such as figure 1 As shown, the purpose is to remove sulfur compounds (H 2 S, SO 2 , SO 3 etc.), to improve the sulfur poisoning of post-treatment devices, and current sulfur traps generally include renewable sulfur traps and storage sulfur traps, among which, if figure 1 The scheme uses a renewable sulfur trap. Since the renewable sulfur trap needs to be regenerated regularly, the sulfides generated during the regeneratio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More