Petrochemical sludge is characterized by high moisture content and oil-water mixture, making it extremely difficult to dewater. Sludge treatment has become a prominent challenge for the petrochemical industry. Conventional mechanical dewatering can only reduce the moisture content of sludge to about 80%, which fails to meet the "reduction" requirement for sludge disposal.
For this reason, many chemical enterprises adopt petrochemical sludge dryers. Using thermal drying technology, these dryers can deeply remove moisture from sludge, achieving the treatment goals of "reduction and harmlessness". The following points should be noted during the drying of petrochemical sludge: 1. Oil-water mixture characteristics While "dewatering" is critical for ordinary sludge, "deoiling" is equally important for petrochemical sludge. Due to its oil-water mixed nature, both moisture content and oil content must meet the required standards to achieve qualified drying results. 2. High difficulty in oil removal Oil has much stronger permeability and binding force than water molecules, so deoiling is more difficult than dewatering. These drying challenges have put forward higher requirements for petrochemical sludge dryer manufacturers. To solve the problems of dewatering and deoiling petrochemical sludge, ZJN Drying System Co., Ltd. has devoted more than 30 years to research and development. Based on single-drum drying technology, the company has developed the Three-stage Multi-loop Dryer (with disintegrator) technology, which realizes simultaneous dewatering and deoiling through graded drying, reducing both moisture and oil content in one pass with excellent drying performance. This equipment offers the following advantages: 1. Drying of high-moisture and high-viscosity materials After entering the dryer, high-moisture and high-viscosity materials are quickly dispersed by the rotary rake crushing device, effectively reducing adhesion. With the help of the new guiding and lifting system, materials keep moving at high speed and will not stick to the drum wall or accumulate in dead corners due to stagnation.
2.Three-stage drying core The patented core technology adopts an automatic reciprocating concurrent & countercurrent raking process. The whole drying process is divided into three stages, which evaporate water and oil from petrochemical sludge through step-by-step dewatering and deep drying to achieve the expected drying effect.
3. Strict temperature control for safe and reliable operation. The temperature of the petrochemical sludge dryer is strictly controlled to prevent combustion or even explosion of materials inside the equipment, ensuring safe and reliable operation for users.
