Spent Earth Oil Extraction

We believe in providing top quality workmanship and are so confident in our level of service that we back.

Get A quote

What is Spent Earth Oil Extraction?

Spent earth, or spent bleaching earth, is a byproduct generated during the refining of edible oils and fats. It is used as an adsorbent to remove impurities and contaminants from the oil. Once saturated, it becomes spent earth, which requires efficient processing to recover remaining valuable oil and reduce environmental impact.

Process

Spent Earth Oil Extraction Process

Step 1

Collection and Transportation

The process begins with the safe collection and transportation of spent earth from refining facilities. We ensure that the spent earth is handled with care and transported under conditions that prevent contamination.

Step 2

Pre-Processing and Preparation

Initial Inspection: Upon arrival at our plant, the spent earth undergoes an initial inspection to assess its quality and composition. This step helps in determining the most effective processing methods.

Drying: The spent earth is dried to reduce moisture content, which improves the efficiency of the extraction process and helps in achieving higher oil recovery.

Crushing/Grinding: If needed, the spent earth is mechanically processed to break down larger particles and enhance the extraction process. This step helps in maximizing the contact surface area for oil recovery.

Step 3

Oil Extraction

Solvent Extraction: Our plant utilizes advanced solvent extraction technology to recover oil from spent earth. In this process, a solvent is used to dissolve the remaining oil in the spent earth. The mixture is then subjected to separation processes to isolate the oil from the solvent.

Mechanical Pressing (Optional): In addition to solvent extraction, mechanical pressing may be employed as an initial step to extract a portion of the oil before solvent extraction. This dual approach can enhance overall oil recovery.

Step 4

Solvent Recovery and Recycling

Distillation: The solvent used in the extraction process is recovered through distillation. This step allows for the purification and recycling of the solvent, minimizing waste and reducing operational costs.

Step 5

Oil Refining and Purification

Filtration: The recovered oil is filtered to remove any residual impurities and contaminants, ensuring high purity and quality.

Refining: Depending on the intended application, the oil may undergo further refining processes, such as degumming, neutralization, bleaching, and deodorization, to meet industry standards and specifications.