Final disposal and utilization of sludgeⅠ

After sludge is treated and disposed by a series of methods, there are generally the following final disposal methods for the dried sludge:

1. Sanitary landfill

Sanitary landfill is a traditional and mature sludge disposal method with low investment requirements and good effect, and can also increase part of urban construction land. As for the dry sludge, it is generally selected to be buried together with the municipal daily household garbage through solid waste landfill, or special sludge landfill can be set up for it. However, the current sludge treatment technology is not very perfect, some harmful substances in the sludge may not be removed clean, after landfill may have a certain potential threat to the surrounding environment.

2. Incineration

Incineration is the most thorough way of disposal. Because sludge contains a lot of organic matter and fibrous lignin, it generates a lot of heat after incineration, and the residue is less, and does not need sterilizing treatment. The energy generated during incineration can be used to generate electricity, and the ashes after incineration can be used to make cement, etc. Incineration of sludge is a very effective way to dispose of sludge.

Oil sludge modulation in China — the status of mechanical separation technology.

Although many advanced technologies in foreign countries have been successful, but because of the conditions in all aspects of our country are greatly limited, so that these efficient technologies cannot be fully applied in our country. Our country can only draw lessons from its essence, innovate the sludge treatment technology which is suitable for our country present situation.

Oil sludge modulation in China — the status of mechanical separation technology

In the domestic refinery oily sludge modulation system, commonly used flocculants include polymer inorganic flocculants such as polyaluminium chloride, polyferric sulfate and polymer organic flocculants such as high degree of polymerization of non-ion, cation, anionic polyacrylamide and other long chain macromolecules. Most units use cationic organic flocculant or organic flocculant combined with lime before mechanical dehydration to improve the flocculation and dehydration effect. The pre-treatment of sludge in refineries in China generally adopts mechanical dewatering process, mainly with belt filter press and centrifuge. The moisture content of dehydrated sludge is 75%~80%. According to the results of various experiments, the sludge modulation-mechanical dewatering process has developed quite well among the various treatment processes for oily sludge.

The desander cleaner is used in the solid phase control system of drilling fluid.

The desander cleaner is used in the solid phase control system of drilling fluid. It is a combination of cyclone desander and vibrating screen.

Desanding cleaner designed according to the principle of particle sedimentation, the drilling fluid separation medium through sand pump produce certain pressure and velocity, along the spiral into the cyclone wall, coarser particles under the action of centrifugal force and gravity walls along the hydrocyclone vortex sink, from the
underflow port , falls below breakdown vibrating screen separation, has risen in a spiral along the hydrocyclone, the rest of the media from the overflow mouth into the third grade separation equipment desilter further purification treatment.

Installation and debugging of desander cleaner:

The desander cleaner is m+ainly composed of a vibrating screen, a shunt manifold and a cyclone. The inlet pipe and overflow pipe of the desander cleaner are symmetrical at both ends to facilitate installation. Connect the slurry outlet of the sand pump with the inlet pipe of the desilter cleaner, and drain the overflow pipe of the desilter to another drilling fluid tank.

KOSUN MA series mud aitator

KOSUN MA series mud aitator belongs to the equipment of tank type drilling fluid solid control system, it is mainly used for drilling fluid mixing, prevent the drilling fluid solid phase particle deposition in the tank circulation system, make the circulating drilling fluid performance is stable, mixing, mixer by explosion-proof motor, reducer, frame and wave wheel of four most. The motor and the reducer, the reducer and the wave wheel shaft are connected by a rigid coupling, and the wave wheel is welded by four blade groups.

Installation and maintenance of mud agitator:

1. When installing the mud agitator, lift the agitator horizontally and place it in the desired position smoothly;

2. Mud agitator rigid coupling must be equipped with spring pad and should be solid and reliable;

3. During the operation of mud mixer, there should be no difference in sound, cassette and high temperature;

4. The oil level of the mud agitator reducer should be kept in the middle of the oil window, and the oil should be replenished frequently when working.

Features and advantages of KOSUN’s vertical cuttings dryer.

In oil and gas drilling, water based mud is used in shallow Wells and oil based mud is used in deep Wells. Conventional solid control equipment can effectively recover heavy metal and useful drilling fluid items. If these solid phase parts containing heavy metals and compounds are discharged randomly without treatment, long-term precipitation will cause great harm to the surrounding vegetation, soil, groundwater and other natural environment and human survival environment.

With the constant improvement of the environmental protection requirement, puts forward higher requirements on drilling field cuttings nursing, the emergence of drilling waste purification system, not only can very good to solve the environmental problems, at the same time to the waste of the solid control system to produce secondary recycling, can maximize the retention of mud is useful at the same time, to focus again after processing of drilling cuttings curing processing, reduce on-site damage to the surrounding environment.

Features and advantages of KOSUN’s vertical cuttings dryer:

1. Self-suction device, which does not need centrifugal pump to supply drilling mud;

2. Eliminate corrosion and reduce the cost of repair and maintenance;

3. Compact design and small space;

4. Deaerator can also be used as a high-power mud mixer;

5. Excellent performance, low noise, flexible and reliable braking;

6. With large capacity, low energy consumption and perfect shockproof, timing, automatic and safety control system.

The drilling fluid cleaner is a combined mud cleaner with a desander and desilter.

The drilling fluid cleaner is a combined mud cleaner with a desander and desilter, including a hydrocyclone desander, desilter, pressure pump, cyclone, bottom flow tank, drilling fluid vibrating screen, bracket and base. The mud cleaner is compact in structure, small in space area and powerful in function. It is an ideal choice for drilling mud to control the solid phase of two or three levels.

Xi ‘an KOSUN adopts the most advanced drilling fluid cleaner manufacturing process at home and abroad, to ensure the production of powerful, compact structure, easy to operate, easy to maintain the drilling fluid cleaner.

1. The main structure of the drilling fluid cleaner is arranged in the upper and lower parts. The cyclone desander and mud remover are arranged on the upper part.

2. There is a control butterfly valve between the main inlet and outlet pipes of the desander and desilter, which can adjust the number of work of the desander and desilter at any time, and the operation is simple and easy to maintain;

3. Wear resistant special polyurethane material is selected for the cyclone, which has the advantages of good corrosion resistance and highly healthy fluid flushing;

4. Feed mouth tangent feed, smooth transition, conducive to improve the separation efficiency, the inner surface is smooth, reasonable flow channel;

5. The hydrocyclone desander and desilter are equipped with automatic sand control and blocking device and bottom flow port adjusting device; 6. Different Numbers of desander cyclone and desilter cyclone can be configured according to user requirements.

Daily maintenance of centrifuge

Centrifuge must have special operating and maintenance personnel, operators should check per class, record the flow rate of the machine the vibration of the main bearing, bearing temperature, working current, voltage and other data, before each downtime should be in the drum and spiral of sediment is rinsed clean, lest drum and spiral internal product materials caused by the vibration of the machine, the next time you start in the process of work, in case of sudden high electric current, should be immediately shut down feed valve, open the purge valve cleaning spiral to the working current lie screw can continue through material, after returning to normal say failure lie screw have been conversely, need to find out the reason behind the discharge fault to boot up again.

Before the centrifuge is shut down for a long time, the material in the drum should be carefully removed. Grease should be added to each lubricating part and the machine should be cleaned. Rust prevention oil should be applied to the relevant parts.

Xi ‘an KOSUN series of horizontal spiral discharge settling centrifuge is my company to introduce and absorb advanced foreign technology developed on the basis of and improvement, to develop a series of centrifuge products, mainly used in urban life waste water, industrial waste water, chemical, video, pharmaceutical, nonmetalliferous ore and similar areas of solid-liquid separation in production process.

The mud gun produced by xi ‘an KOSUN is a professional oil drilling fluid solid control equipment.

Mud gun is usually used with high-power sand pump or shear pump, mainly to prevent mud from settling in drilling mud tank.

Mud gun is used for high-pressure injection device in mud tank to prevent solid phase precipitation at the corner of mud tank and suction inlet of each pump. It can also be used to transport mud between silos.

Features and advantages:

1. Mud gun manufactured by KOSUN can be fully rotated and adjusted;

2. Use a replaceable abrasive nozzle.

The mud gun produced by xi ‘an KOSUN is a professional oil drilling fluid solid control equipment, which is different from many other solid control equipment. The mud gun designed and produced by our company can perfectly combine the solid control system, coordinate the work, and make the whole solid control system become a unified whole. The mud gun produced by our company is designed, produced and manufactured for the mud solid control system of different drilling RIGS. It is mainly used in the mud solid control system of drilling fluids, including low pressure, medium pressure and high pressure. Respectively for sand pump, slurry pump mostly in the form of form a complete set, the device also can be used with drilling mud shear pump, mainly to prevent mud in drilling mud tank precipitate a kind of special tools, our company produces the mud gun injection effect is good, clean area, is currently on the market of similar products in a product is rare. The device is simple in structure, flexible in operation and convenient in use.

Tailings processing is a major problem facing the mine producers.

Tailings refers to the waste slag discharged by mining enterprises after the completion of mineral processing, which is mostly discharged in the form of mud to form the tailings pond. The tailing pond covers a large area and has a great potential safety hazard. In addition, the water from the tailing rich in mineral dressing agents penetrates into the ground, causing great pollution to the environment and groundwater. Therefore, tailings processing is a major problem facing the mine producers.

Tailings are the “wastes” discharged by mining enterprises under certain technical and economic conditions, but most of them contain various colored, black, rare, rare earth and non-metallic minerals, which are valuable secondary resources. When technical and economic conditions permit, it can be effectively developed again. Tailings are profitable. How to deal with them?

Xi ‘an KOSUN dry tailings flotation rows using flotation, centrifugal dehydration dry process, tailings after a buffer tank with slurry pump to high speed frequency conversion in the horizontal screw centrifuge, all returned after high-speed centrifuge separation of the liquid grinding, classification work with again, while the solid phase by belt transporting chance to the tailings for dry lamination stack so as to ensure the long-term safety of the tailings.

Flotation dry discharge of tailings is a new technology of tailings disposal, which is not only technically advanced and feasible, but also maximizes the economic benefits of mining enterprises. KOSUN’s tailings flotation dry discharge process equipment is mainly composed of grading cyclone group, coarse size tailings dry discharge high-frequency screen, efficient deep cone thickener, high pressure filter press and other equipment. It is mainly used for the dehydration treatment of tailings in concentrator to achieve the purpose of dry pile of tailings, so as to recover available resources and reduce environmental pollution.

Mud tank as an indispensable equipment in the solid control system

As the mud carrier, the mud tank is an indispensable part of the mud circulation system, which can in turn complete the weight of mud, slurry distribution, solid-liquid separation, degassing and other processes; The mud tank carries the mud circulation from the wellhead to the mud pump, and the solid phase particles in the mud are separated step by step through the corresponding solid control equipment on the tank, and the mud weight mixing system is deployed to meet the drilling process requirements.

The degassing equipment on the mud tank can remove the harmful gas in the mud, so as to ensure the environmental requirements and mud weight of the work site; Mud tank adopts electrical centralized control. In polar regions, the tanks are equipped with heating and insulation systems.

Mud tank on the supporting equipment generally: drilling fluid shale shaker, vacuum degasser, desander, desilter. Sand and mud removal machine, liquid and gas separator, mud agitator, sand pump, shear pump, centrifuge, electronic ignition device, mixing funnel, jet mixing device, mud gun, etc.

Mud tank as an indispensable equipment in the solid control system, the use of the need to pay attention to: do not let the mud tank sediment attached to the tank wall, reduce the capacity of the tank, is not conducive to cleaning.

Xi ‘an KOSUN manufacturing series mud tank is mostly square tank, the base of i-steel as the main beam plus other profiles, on the basis of meeting its strength requirements made of skid-mounted structure.