Reformed-gas-based device and method for purifying engine tail gas

An engine and reformed gas technology, applied in exhaust devices, engine components, combustion engines, etc., can solve the problem of high cost of precious metal catalysts

Inactive Publication Date: 2011-08-24
BEIJING UNIV OF TECH
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, vehicles widely use three-way catalytic converters coated with precious metal catalysts to treat harmful emissions in exhaust gas, but the cost of precious metal catalysts such as palladium Pd, rhodium Rh is too high

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reformed-gas-based device and method for purifying engine tail gas
  • Reformed-gas-based device and method for purifying engine tail gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Combine below figure 1 This embodiment will be described. The system can be divided into three parts: a. Exhaust gas circulation unit; b. Reforming fuel supply unit; c. Electronic control unit.

[0017] a. Exhaust gas circulation unit: Engine 1, Pt-based catalytic reformer 2, and Cu-based catalytic reformer 3 are connected in sequence. The fuel enters the engine 1, and the combustion products first pass through the Pt-based catalytic reformer 2, and then pass through the Cu-based catalytic reformer. b. reforming fuel supply unit: the reforming fuel tank 4 is connected to the Cu-based catalytic reformer 3 through the reforming fuel pump 5, and the reforming fuel pump 5 is connected to the Cu-based catalytic reformer The reformer 3 is also connected with a reforming fuel flow control solenoid valve 6; the reforming fuel pump 5 pumps the fuel in the reforming fuel tank 4 into the Cu-based catalytic reformer 3, wherein the reforming fuel flow control solenoid valve 6 contr...

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

PUM

No PUM Login to view more

Abstract

The invention relates to a reformed-gas-based device and a reformed-gas-based method for purifying engine tail gas. The device comprises three parts, namely a tail gas circulation unit, a reformed fuel supply unit and an electronic control unit, wherein the tail gas circulation unit comprises an engine, a platinum (Pt)-base catalytic reformer and a Cu-base catalytic reformer; the reformed fuel supply unit comprises a reformed fuel tank, a reformed fuel pump and a reformed fuel flow control solenoid valve; and the electronic control unit comprises a flow sensor, a temperature sensor and an electronic control unit. The device and the method apply a lean-burn control strategy. Under the lean-burn condition, O2 in the engine tail gas is sufficient, a product formed by burning fuel passes through the Pt-base catalytic reformer originally, and HC and CO in the tail gas react with the O2 in the presence of a Pt-base catalyst; then the product passes through the Cu-base catalytic reformer, and the fuel performs a steam reforming reaction in the presence of a Cu-base catalyst to generate hydrogen-enriched reformed gas containing the H2 and CO; and the H2 and the CO react with NOx in the tail gas to fulfill the aims of energy conservation and emission reduction.

Description

technical field [0001] The invention provides a device and method for purifying engine exhaust gas based on reformed gas, which mainly utilizes sufficient O2 under the condition of lean combustion of the engine, and removes HC and CO in the exhaust gas under the action of a Pt-based catalyst; in addition, heavy fuel The hydrogen-rich reformed gas (mainly including H2 and CO) generated by the whole reaction reacts with the NOx in the exhaust gas under the action of the Cu-based catalyst, so as to achieve the purpose of purifying the engine exhaust gas. The invention specifically relates to the step-by-step purification process of engine exhaust gas, the supply of reformed fuel, the preparation and application of reformed gas. Background technique [0002] With the rapid development of the economy and the continuous enhancement of people's awareness of environmental protection, the increasingly significant energy crisis and environmental problems have aroused widespread concer...

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

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F01N9/00F01N3/24F01N3/28F01N3/36F01N3/20F01N3/22C01B3/02
CPCY02T10/47Y02T10/40
Inventor 纪常伟戴晓旭张旭
Owner BEIJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap