Product Use Background

The amine liquid filter is a high-efficiency filtration system developed by combining the characteristics of domestic desulfurization devices and the use of amine liquid. It is often used in chemical processes such as petroleum, natural gas, coal chemical industry, and synthetic ammonia to filter and clean the pollutants in desulfurization amine solution. High-efficiency filtration equipment . It is one of the equipment in the purification system of amine liquid. The amine liquid purification system is to regenerate the amine liquid polluted by other impurities such as thermal stable salts in the process of desulfurization and decarburization. In fact, the rich amine liquid is heated and distilled, and returned to the adsorption tower for recycling. Conversion between rich and lean amine solutions.

Product Overview

The first stage is filtered by a washable embedded chute line metal filter with a filtration accuracy of 25µm to filter the solid particles existing in the amine liquid system and backwash regularly to realize the regeneration of the metal filter element. The second stage adopts a deep filter bed combined with large-capacity activated carbon and porous active filter material, which is especially suitable for the adsorption of organic substances in amine liquid. The third stage adopts ultra-fine bag filter or stainless steel metal filter element, with a filtration accuracy of 5µm, to intercept the remaining trace suspended solids. It is a three-stage skid-mounted equipment, and filter units can be added or reduced according to customer requirements. Realize one backup and one use.

Working Principle

The amine liquid tank and the filter communicate with each other through the connecting pipeline, the liquid flows in from the main inlet pipe, and the side wall of the filter is provided with an inlet pipe and an inlet valve for sending the material to be filtered into the filter. Entering the entrance of each filter unit, the filter is equipped with a screen, and the filter is equipped with a nitrogen inlet pipeline. The nitrogen inlet pipeline is connected to the nitrogen storage tank through the pump valve structure, and a pressure gauge is installed inside the filter and at the front end of the screen. . The liquid penetrates the outer surface of the filter element from the outside to the inside, flows to the outlet of each filter unit, collects to the outlet main pipe, and then flows out; during use, the amine liquid to be filtered is injected into the filter, and the particulate impurities are intercepted on the outer surface of the filter element, accumulating to form For filter cake, when the pressure in front of the screen reaches a certain level, close the filter inlet valve, press the filter with nitrogen, and send the clean amine liquid inside the filter to the amine liquid tank to achieve filtration. When the filter pressure difference gradually increases to the preset value (usually 1.5bar) or when the cleaning time period is up, the valve on the pipeline of the filter unit is opened for backwashing.

Product Advantages and Characteristics

1. Large adsorption capacity: 7 to 10 times that of traditional activated carbon filters, and is easy to regenerate. At the same time, the foamy groups existing in the amine liquid are coarse-grained and surface coalesced, destroying the elastic gel layer that forms the foam , reducing the foam stability, causing the foam to collapse and coalesce.

2. High filtration precision: the precision can reach 5μm, which overcomes the problems of low efficiency of traditional filter cloth, frequent backwashing, and small dirt holding capacity.

3. Combined installation: graded filtration, using high-efficiency combined filter device, can basically realize the purification of amine, greatly alleviate the foaming of amine liquid, and reduce the running loss of amine liquid.

4. Long corrosion resistance life: Due to the presence of heat-stable salts in the amine solution, the filter part is made of carbon steel rubber-lined material or 316 material, which has good corrosion resistance.

5. Safe and reliable: The setting of the sealing ring can improve the sealing of the connection between the butt joint and the feed pipe, prevent the amine liquid from leaking out and pollute the environment, and protect the safety of workers.

Application Industry

1. Backwash purification of feedstock oil in petrochemical hydrogenation unit.

2. The amine liquid circulation purification treatment technology of the desulfurization system.

3. Used in the filtration of synthetic oil in synthetic equipment, etc.

It is used for purification of high-temperature gas in gasoline adsorption desulfurization, etc.

4. It is used to remove sulfur, ammonia atoms and metal impurities in oil during the refining process of oil.

5. It is used for the purification and filtration of amine liquid in the chemical gas desulfurization system, so as to improve the efficiency of the device and reduce the consumption of amine liquid.