MTU diesel generator on exhaust gas treatment

One.Detailed description:

1. Design basis

National and local laws and regulations on environmental protection; Hygienic standard for design of industrial Enterprises (TJ36-79); Calculation table of national general ventilation duct; National Comprehensive Emission Standard of Air Pollutants (GB16297-1996); "Guangxi Province Air pollutant Emission Standard" "Three Wastes Treatment Engineering Technical Manual" waste gas volume;

Basic information and site situation provided by the manufacturer.

2. Design principles

Ensure that the treated flue gas meets the national and local emission standards; Adopt advanced, reasonable, mature and reliable processing technology; Low investment and low operating cost; Safe operation, simple and convenient; The treatment effect is stable and covers less area.

3. Design scope

The design and equipment selection of flue gas from the secondary muffler discharge outlet to the structure of standard discharge after treatment.

4. Enforce emission standards

The secondary emission limits of air pollutants from new sources shall be implemented in the Comprehensive Emission Standards for Air Pollutants (16297-1996).

Maximum allowable emission concentration of pollutants mg/m3 sulfur dioxide ≤550 Smoke ≤80 Nitrogen oxide ≤240 Ringermann blackness ≤ ClassI

Two, smoke volume and pollutant concentration

1. The smoke gas

According to the generator set information query, when the 880kW Cummins generator set is full load, the maximum flue gas emission is: 10983m3/h. According to the number and location of your company's generators, this scheme design: each generator sets a flue gas treatment tower.

The capacity of each flue gas treatment tower is 12000m3/h.

2. Technical analysis and process determination

The generator produces fuel gas in the process of generating electricity. The main pollution indicators in the waste gas are carbon dioxide, carbon black, carbon monoxide, sulfur dioxide and nitrogen oxide, and its main characteristics are as follows:

(1) Dust temperature is high, generally about 400℃.

(2) Corrosive gases such as SO2.

(3) Fine dust particles, generally between 0.01-0.1μm.

(4) The dust composition is dominated by soot, carbon black and oil, with small specific resistance, generally ≤103 ohm · cm.

(5) dust generally remains more oil components, and even oil components, with oil characteristics and hydrophobic characteristics.

According to these characteristics, lye swirl spray tower is used to treat generator flue gas to achieve standard discharge.

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