How to choose a suitable demulsifier?
As a supply oil demulsifier manufacturer, How to supply demulsifier oil to meet the requirements of end user is a key problem. Also, as a buyer, how to buy demulsifier product is as key a problem as that of the supplier.
There are various types of demulsifers in the market.Common types and specifications of demulsifiers we can supply demulsifier oil are as follows:
1. SP type demulsifier
Main component: Polyoxyethylene polyoxypropylene octadecanol ether.
Appearance: Light yellow paste-like substance.
Characteristic: Easily soluble in water and has a good demulsification effect on paraffin-based crude oil.
If you want to buy demulsifier additive like SP type demulsifier, it is important to take the jar test before buying.
2. AP type demulsifier
Structure: Polyoxyethylene polyoxypropylene polyether with polyethylenepolyamine as the initiator, which is a multi-branch nonionic surfactant molecule.
Product specification examples: There are different models such as AP134, AP136, AP212, AP221, AP257, AP8051, etc. Each model has certain differences in indicators such as hydroxyl value, pH value, freezing point, cloud point (1% aqueous solution). For example, the hydroxyl value is 40-60mgKOH/g, the pH value is 8-10, and the freezing point is -15°C to -10°C, etc.
Characteristic: Suitable for the demulsification of paraffin-based crude oil emulsions, especially for crude oil with a water content higher than 20%. It can demulsify quickly under low-temperature conditions.
To buy demulsifier factory is the best way to choose the suitable product.
3. AE type demulsifier
Structure: Polyoxyethylene polyoxypropylene polyether with polyethylenepolyamine as the initiator, which is a two-segment multi-branch structure polymer.
Characteristic: Small molecule and short branch chain, suitable for the demulsification of asphaltene crude oil emulsions.
Jiufang Tech, as a supply oil demulsifier manufacturer in China, we can customize the production of demulsifier additive.
4. AR type demulsifier
Component: A new type of oil-soluble nonionic demulsifier polymerized from alkyl phenolic resin, polyoxyethylene and polyoxypropylene.
Characteristic: The molecule is not large. When the freezing point of crude oil is higher than 5°C, it has good dissolution, diffusion and penetration effects, promotes the flocculation and coalescence of emulsified water droplets, and can achieve better dehydration effect at a relatively low temperature and in a short time. It can also be used for demulsification after "water washing and desalting" in refineries, and has the functions of anti-wax and anti-sticking.
As an end user, if you want to buy demulsifier product, you need to learn the properies of crude and it is easy to choose the suitble product.
5. N-220 series demulsifiers
Properties: Viscous waxy substances.
Specific models: Include N-22040, N-22064, N-22070, etc. Among them, N-22040 and N-22064 are suitable for crude oil demulsifiers and desalting in refineries, and N-22070 is a rare metal extractant and can also be used for dehydration of crude oil.
As a trading company, you'd better to equip some instruction of jar test to buy demulsifier additive.
6. ST series demulsifiers
Composition: Phenolic amine polyoxypropylene polyoxyethylene ether.
Properties: Yellow transparent liquid. Including different specifications such as ST-12, ST-13, ST-14, TA-1031, etc. The specific differences depend on the ratio of raw materials used and the dilution degree.
To buy demulsifier factory's product, you can obtain the full-range service from the manufacturer.
7. Coal tar demulsifier
Appearance: Amber.
Characteristic: It is an oil-soluble demulsifier and viscosity reducer, which can enhance the separation speed and effect of tar and ammonia water, reduce the content of suspended solids entrained in ammonia water, appropriately reduce the surface tension of tar, and accelerate the separation of tar and tar residue, etc.
To supply demulsifier oil from source manufacturer, the end user can obtain the high quanlity products.
8. Universal demulsifier Appearance: White powder (Some universal demulsifiers are in solid form). Application scope: Can be applied to the treatment of various oily sewage and has wide applicability.
We need to select the suitable demulsifier to meet the end user’s requirement.