DE9304777U1 - Multipurpose gas washer - Google Patents

Description

DESCRIPTION

Designation

Purpose of the utility model

State of the art

Tasks of the multi-purpose gas scrubber:

Technical solution

Multipurpose gas scrubber

The multi-purpose gas scrubber is used to clean exhaust gases and flue gases from industrial plants. The pollutant components are reduced to below the values required by the legislator in the Federal Immission Control Act, TA Luft.

A variety of gas scrubbers with different shapes and fittings adapted to the process conditions are used in industry.

For the most part, the washers are designed for very specific cleaning processes with a precisely defined process and operating sequence and the structural design required for the individual purpose.

Gas scrubbers for cleaning gases with different compositions and different options for cleaning processes are not known to the applicant.

The utility model is based on the task of eliminating or reducing the solid, liquid and gaseous pollutants in industrial exhaust gases in an apparatus using various cleaning processes and with the aid of various scrubber components, reaction layers, fillings and operating conditions.

The scrubber with a rectangular cross-section and horizontal design contains interchangeable basket inserts and nozzle assemblies connected in series, which enable a λΩ-stage gas cleaning.

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The following mechanical, thermal and chemical processes can be carried out individually, one after the other or in parallel using the apparatus design:

Stage I : Adsorption, filtration in an adsorber layer,

Stage II: Gas temperature regulation by steam injection,

Stage III: Absorption, desorption when using spray liquids,

Stage IV : Absorption/desorption in the packed bed,

Stage V : Gas temperature regulation by steam injection,

Stage VI: Catalytic reduction and adsorption in the adsorber bed,

Stage VII: Adsorption/desorption and leaching of solid particles by means of spray liquid,

Stage VIII: Phase separation by means of lamella and baffle plate separation,

Stage IX : Gas mixing for the purpose of gas dilution, quantity and temperature regulation,

Stage X: Liquid separation due to gravity in all of the above stages I to IX.

Depending on the gas cleaning requirements, the scrubber can be prepared, converted and adapted for the respective cleaning tasks with little manual effort. All components are interchangeable.

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Spatial-technical

(constructive) features : The multi-purpose gas scrubber is optionally made of plastics

and/or corrosion-resistant steels. The basic shape of the scrubber is rectangular. The dimensions for the cross-section and length are selected according to the gas quantity and the optimal flow conditions.

An example of implementation is shown in the attached drawing (Appendix 4).

The main components of the washer are:
Pos. 1 - Housing

Pos. 2 - 7 basket inserts

Pos. 3, 4, 5 -17 nozzle blocks with mist nozzles, arranged in 5 spray levels

Pos. 6 - Lamellar separator

Pos. 7 - Baffle plate separator in front of the washer outlet

Pos. 8, 9 - Flow valve and baffles

Pos. 10 -Flow straightener grid

All inserts and nozzle assemblies are simple in design and are identical regardless of the process task.

The horizontal design is chosen for the washer primarily for reasons of good accessibility and easy changing of the washing baskets.

All components, except the guide plates (items 8, 9) and flow straighteners (item 10) are replaceable.

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After entering the washer, the gas is first evenly distributed over the entire cross-sectional area by the distribution system (item 8). After flowing through the third and fifth basket, the gas is evenly distributed again by 4 guide plates each (item 9).

After the guide plates, rectifier grids (item 10) with a minimum length of 100 mm are arranged before entering the reaction beds. These ensure that the gas passes through the reaction zones vertically and without uncontrolled cross-currents that complicate the reaction.

The individual basket inserts (item 2) and the lamella separator (item 6) are held immovably within the washer by angle iron guide frames (item 12). The baskets can be easily replaced by arranging hinged lids (item 11) and using the guide frames (item 12).

In addition, the guide plates (items 8, 9), rectifier grid (item 10) and basket guide frame (item 12) reinforce and stiffen the washer as a whole, so that it can be operated without any problems in the negative pressure range.

In the washer, there are two spray levels between the first two reaction baskets, and one behind the second and fourth baskets, consisting of 3 nozzle blocks (items 3, 4) with mist nozzles. Behind the last basket insert there is a spray level with 5 nozzle blocks (item 5). The mist nozzles atomize the pressurized washing liquids into the finest droplets with a large specific surface area, thus guaranteeing the best possible conditions for intensive contact between the liquid and the exhaust gas. The nozzle blocks (items 3, 4, 5) can be easily replaced and maintained individually via a nozzle (item 15).

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To heat the exhaust gas to the optimum process temperature, steam is injected into the gas flow. For this purpose, three nozzle lances, each with 4 special nozzles, are arranged behind the first washing basket. If the necessary process temperatures are not reached, additional steam injection can be carried out using the 3rd nozzle level.

Summary: The multi-purpose gas scrubber is used to clean industrial

gases. It is possible to apply different cleaning processes in 10 stages.

Seven interchangeable baskets, 17 variably designed nozzle rods with mist nozzles and 9 free reaction chambers enable optimal removal or reduction of solid, liquid and gaseous pollutants.

A lamella separator, a baffle system and nine intermediate drainage systems ensure liquid separation and drainage.

The multi-purpose gas scrubber is made from plastics and/or corrosion-resistant steels. The basic shape of the scrubber is rectangular. The dimensions for the cross-section and length are selected according to the gas quantity and the optimal flow conditions.

Euskirchen, 25 March 1993

(Dolata)

Dipl.-Ing. TiIo Dolata Euskirchen

Annex 4, Sheet 2 to the utility model application dated 25.03.1993

COMPONENT LIST Multipurpose gas scrubber

Pos. No. Number Designation. (Piece) 1 1 Housing 2 7 Basket insert 3 6 Nozzle for steam 4 6 Nozzle holder for washing liquid 5 5 Nozzle for water 6 1 Lamellar separator 7 1 Baffle plate 8th 4 Flow distribution plate 9 12 Flow baffle 10 3 Flow straightener grid 11 8th Hinged lid 12 16 Guide frame for inserts 13 4 Baffle plate screw connection 14 9 Drainage nozzle 15 14 Nozzle holders

Euskirchen, 25 March 1993

(Dolata)

Claims (1)

Generic term: 1. Multi-purpose gas scrubbers in rectangular and horizontal design, - that seven rectangular baskets are arranged which can be exchanged from above, - that five spray levels with three to five nozzles each are installed between the rectangular baskets, - that a gas guidance system consisting of three gas distribution levels and three flow straightener grids ensures uniform, turbulence-free gas distribution across the entire cross-section, - that a liquid separation system consisting of a lamella separator with a downstream impact plate is arranged in front of the outlet of the washer. Subclaims: 2. Seven rectangular baskets according to claim 1 j characterized, that the front and back sides are closed, the front and back sides are fitted with perforated sheet metal and wire mesh and the baskets are open at the top. ; 3. Five spray levels according to protection claim 1 j characterized, that each spray level has three to five nozzle lances, each equipped with four mist nozzles, which can be replaced from above and are held in place at the bottom by means of a plug-on pin. 4. A gas supply system according to claim 1, characterized in that that the first gas distributor, arranged directly behind the gas inlet nozzle, distributes the gas over the entire scrubber cross-section by means of truncated cones arranged one inside the other and two further distribution levels, arranged at equal distances along the scrubber length, ensure that the gas is distributed evenly over the entire scrubber cross-section. 5. Three flow straightening grids according to claim 1 -2- Euskifchen, 04 August 1993 characterized, that grid-shaped flow straighteners are arranged in front of the L,4" and 6th rectangular basket to generate a horizontal, vortex-free gas flow. 6. Liquid separation system according to claim characterized in that that a lamella separator with a subsequent baffle plate separator is arranged in front of the gas outlet nozzle within the gas scrubber. (Dolata)