# US 5,700,434 A · Reactor for catalytically processing gaseous fluids

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,700,434 A
- Document ID: US5700434A
- Status: Granted
- Kind: A
- Application number: 08/325,252
- Filed: 1994-10-20
- Granted: 1997-12-23
- Earliest claimed: 1992-04-30
- Inventors: Gerd Gaiser
- Web page: https://patentgrep.com/patent/US5700434A

## CPC

- F01N 3/2046: {Periodically cooling catalytic reactors}
- B01D 53/864: {Removing carbon monoxide or hydrocarbons}
- B01D 53/8668: {Removing organic compounds not provided for in B01D53/8603 - B01D53/8665}
- B01D 53/885: {Devices in general for catalytic purification of waste gases}
- B01J 8/0242: {the fluid flow within the bed being predominantly vertical}
- B01J 15/005: {in the presence of catalytically active bodies, e.g. porous plates}
- B01J 19/2485: {Monolithic reactors}
- B01J 19/32: Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
- B01J 35/56: Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths
- F01N 3/2006: {Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating (by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235)}
- F01N 3/2026: {directly electrifying the catalyst substrate, i.e. heating the electrically conductive catalyst substrate by joule effect}
- F01N 3/2803: {characterised by structure, by material or by manufacturing of catalyst support}
- F01N 3/2814: {all sheets, plates or foils being corrugated}
- F01N 3/2828: {Ceramic multi-channel monoliths, e.g. honeycombs}
- F01N 3/2889: {with heat exchangers in a single housing}
- B01J 35/30: characterised by their physical properties
- B01J 2208/022: Plate-type reactors filled with granular catalyst
- B01J 2219/32206: Flat sheets
- B01J 2219/3221: Corrugated sheets
- B01J 2219/32213: Plurality of essentially parallel sheets
- B01J 2219/32227: Vertical orientation
- B01J 2219/32466: comprising catalytically active material
- B01J 2219/32475: involving heat exchange
- F01N 2240/02: a heat exchanger
- F01N 2330/02: Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
- F01N 2330/321: with two or more different kinds of corrugations in the same substrate
- Y02T 10/12: Improving ICE efficiencies
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A reactor for catalytically processing gaseous fluids. The invention relates to a reactor for catalytically processing gaseous fluids wherein the catalytic reaction is accompanied by a heat exchange, stationary catalysts are used, with the fluid flowing through the reactor in one direction. To this end, the fluid path-forming structures (10) are provided in the reactor housing, the structures (10) form channels (19), and the structures (10) have at least one region (11) provided with a catalyst (12), preferably coated therewith.

## Claims

### Claim 1

A reactor for catalytically processing gaseous fluids, comprising:
a plurality of fluid path-forming elements spaced from each other to form a plurality of alternatively arranged first channel means and second channel means through which fluid flows in opposite direction, each of said first and second channel means having inlet and outlet regions, wherein at least the inlets of said first channel means and at least the outlets of the second channel means are without catalyst, and wherein each of said first channel means and said second channel means have at least one region other than the inlet and outlet region thereof provided with a catalyst, with the inlet regions of the first channel means and the outlet regions of the second channel means providing for heat exchange between adjacent first and second channel means; and
means for feeding fluid to inlet regions of said first channel means and for discharging fluid from the outlet regions of said second channel means.

### Claim 2 (depends on 1)

A reactor according to claim 1, wherein the fluid-path forming elements are formed as plates having non-flat surfaces.

### Claim 3 (depends on 1)

A reactor according to claim 1, wherein the feeding and discharging means includes a fluid inlet, and wherein the reactor further comprises pre-heating means arranged in the fluid inlet.

### Claim 4 (depends on 1)

A reactor according to claim 1, wherein the fluid path forming elements are formed as plates extending parallel to each other, and wherein the first and second channel means form part of at least one of a cooling circuit and a heating circuit.

### Claim 5 (depends on 1)

A reactor according to claim 1, wherein the fluid path-forming elements are formed as plates, and wherein the region provided with a catalyst is located on one side of the plate.

### Claim 6 (depends on 2)

A reactor according to claim 2, wherein the plates have a wave structure.

### Claim 7 (depends on 6)

A reactor according to claim 6, wherein wave crests of the adjacent plates project in opposite directions so that the plates support each other and form the plurality of first and second channel means.

### Claim 8 (depends on 6)

A reactor according to claim 6, wherein the wave structure is formed as a corrugated structure having different dimensions in at least one of height and spacing.