Off-gas treatment equipment is bought, how to calculate wind force?

To the computation of wind force, normally can 3 kinds can choose:

1, accommodate number computation by the workshop;

2, occupy the per cent calculation that sends wind by new wind;

3, measure computation by workshop size and take a breath.

For the equipment of processing of VOCs of organic waste gas with appropriate to client choice wind force of correct computation processing crucial.

In administering organic waste gas to pollute a process, the waste gas that we discharge according to each enterprise above all is phyletic, , for instance bases is benzene kind still be other gas, want statistic to main gas its content, mix according to content next produce tolerance to have consideration. Next, the length that should measure space of enterprise exhaust emission, wide, tall, regard academic calculative basis as the value.

Use more computational formula and method at present:

1, actual measurement law: Have actual measurement when exhaust emission quantity namely when the value, use calculation is formulary: Q=q × B/b/10000;

In formula each abecedarian meaning:

Q — quantity of annual exhaust emission, unit ” M3/y of 10 thousand mark ” ;

Q — discharge capacity of waste gas hour, unit ” mark M3/h ” ;

B — annual fuel waste time is measured (or clinker crop) , unit ” Kg/y ” ;

B — hourly below normal operating mode fuel cost is measured (or clinker crop) , unit ” Kg/h ” .

2, academic law: Namely wind force computation is formulary, means of use wind force computation:

Bulk of factory of wind force = (long * wide * is tall) M3* is invariable (60~100)

The invariable 60~100 in afore-mentioned formula is experience value, if very short, generation wastes factory basic cycle time tolerance is very small, invariable and OK choose 60; If shorter, generation wastes basic cycle time tolerance is lesser, invariable and OK choose 70-80; If long, generation wastes basic cycle time tolerance is big, invariable and OK choose 90-100.

Cite a simple case for everybody, if want processing to grow wide tall it is 3 meters spray paint room, how should we determine wind force?

See spray paint room fit what kind of inspiratory and ventilated pattern above all. Have 3 kinds of pattern commonly: A kind of completely sealed type, so according to afore-mentioned computation means is right, namely times of air replacement of * of bulk of wind force = , namely 3*3*3*60=1620m3/h. 2 kinds are the top sucks fan housing, times of air replacement is small for 100, the times of air replacement when fume is small 200. 3 kinds are side inspiratory cover, times of air replacement is small for 150, the times of air replacement when fume is small 300. This also is the computational method with at present properer continue to use.