MERCURY DECONTAMINATION CHEMICAL TECHNOLOGY

MeDeX 80 is able to remove mercury vapor from the atmosphere. This is a chelating agent that will remove compound and elemental mercury vapor from the atmosphere and convert the mercury into stable mercury salt in water. Used for decontamination of vessels and equipment during shutdowns and general maintenance work.

MeDeX 80 is a formulated chelating agent able to chelate ionic mercury present in the atmosphere and convert it into a stable compound that is very soluble in aqueous medium. The chemical is biodegradable, non‐toxic, non‐hazardous and non‐corrosive. It is workable in the form of direct spraying, with steam, or with a water circulation technique.

MeDeX 80 will transform elemental and compound mercury vapor into a stable mercury salt in an aqueous form.

MeDeX 80 is a chelating agent which will remove/transform Mercury, Mercurous and Mercuric safely and effectively

MeDeX 80 transforms and degrades mercury into a stable compound soluble in water for removal.

MeDeX 80 is hydrophilic to water and will not stay in Hydrocarbon media.

MeDeX 80 contains plyalkylene glycol compounds and additives, with oxidation and antifoam agents in a complex surfactant system.

Vessel Mercury decontamination

* Steam Injection

* Water Circulation

* Direct Spray

Equipment Mercury decontamination

* Sprayed on equipment

* Soaked in Solution

MeDeX 81

Once the decontamination work is complete, the used chemical and mercury salts are collected.

Then:

MeDeX 81 is added which will increase the gravity of the Mercury Salts sinking them to the bottom of the water sludge ‐ thus leaving Mercury free water

MeDeX 81 is an alkaline precipitator able to convert the mercury compound to mercury element and / or mercury oxide.

MeDeX 81 is able to reduce the total toxic waste to a minimum.

Application

MeDeX 80 is used during general maintenance and decontamination work to remove mercury vapor from vessels and equipment. MeDeX 80 can be injected with steam during steaming decontamination, or more commonly, sprayed directly into a contaminated vessel using a hand held sprayer.

The optimal method for decontamination and the amount of chemicals required for each operation will depend on:

1. Levels of mercury

2. Nature of the mercury

3. Type of vessel

4. Reason for vessel entry

Typically chemical consumption ranges between 200 – 400 liters for a vessel of 100m³ in volume. No Heat Resources can help you design the optimal procedures for a variety of different scenarios.

Maintenance Work

The monitoring of mercury vapor is conducted on a regular basis at various sensitive areas within the plant and the results are plotted. When maintenance work or mini-shutdowns are conducted, mercury vapor levels at the site and surrounding area are measured. If mercury levels exceed the Personnel Exposure Limit (PEL), the maintenance work will be temporarily ceased and decontamination work will take place.

Results

medex80 results

Benefits

The health risks caused by mercury during maintenance and shutdowns can be easily avoided with the right planning, proper procedures, training and the correct application of MeDeX 80.