As a Formaldehyde Production Plant, share with you.
Industry background introduction:
In addition to a large amount of formaldehyde, formaldehyde wastewater also
contains substances such as alcohol, benzene, phenol, paraformaldehyde, and
methylal. Low concentration of formaldehyde can inhibit the growth of
microorganisms. High concentration of formaldehyde can denature proteins and it
is difficult for microorganisms to survive.
Introduction of common processes for formaldehyde wastewater treatment:
1. Oxidation method: There are reagent oxidation, ozone oxidation,
micro-electrolytic oxidation, strong electrolytic oxidation, photocatalytic
oxidation method, wet oxidation, ultrasonic / H2O2 method, ClO2 oxidation
method, etc .; the specific use process needs to be based on the actual It
depends.
2. Purge method: The formaldehyde is easily soluble in water and has a low
boiling point and is volatile. The pretreatment of formaldehyde in production
wastewater with steam is carried out to reduce the load of subsequent
biochemical treatment and improve the treatment effect.
3. Biochemical method: The formaldehyde is used as the nutrition of
microorganisms, and the formaldehyde in the waste water is removed by the
biological metabolism of the organism.
How to deal with water outages during production
What should I do if the Formaldehyde Production Process encounters water outages?
There are four general forms of formaldehyde production water:
1. Add water to the top of the absorption tower;
2. Oxidizer waste heat boiler make-up water;
3. Cooling water for circulating fluid cooler;
4. Make up water for tail gas boiler.
In the event of water outages, different treatment methods should be adopted
according to the source of the water supply. Generally, the following treatment
methods are available:
Ethyl Acetate
1. Start the standby pump immediately;
2. Contact the water supply department;
3. Pay attention to observe the oxidizer waste heat boiler liquid level, tail
gas boiler liquid level and absorption tower temperature rise. Reduce production
load to maintain production if necessary;
4. The tail gas boiler can be suspended and the tail gas is temporarily
evacuated;
5. If the water supply cannot be restored in time within a short period of
time, and the liquid level of the waste heat boiler of the oxidizer falls below
the lower limit, or the temperature of the absorption tower rises suddenly, it
should be immediately stopped.
The tail gas emitted from the production of formaldehyde contains hydrogen
and a small amount of combustible gases such as formaldehyde and methanol that
are not completely absorbed, and it needs to be sent to the tail gas furnace for
combustion. The modified tail gas furnace can be used without a blower, and when
the boiler is stopped, the tail gas furnace can be used to directly burn
methanol to generate steam for driving. Fast steam production and stable
pressure.
Our company also has Ethyl Acetate on sale, welcome to
consult.
