CN111960627B

CN111960627B - Harmless oil silt deoiling system and oil silt deoiling method

Info

Publication number: CN111960627B
Application number: CN202010929038.2A
Authority: CN
Inventors: 郑红利
Original assignee: Qinghai Zhongjuhuineng Environmental Protection Technology Co Ltd
Current assignee: Xi'an Changkan Oil and Gas Technology Development Co.,Ltd.
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-03-09
Anticipated expiration: 2040-09-07
Also published as: CN111960627A

Abstract

The invention provides a system for deoiling harmless oil sediment, which comprises a composite feeder, a ball mill, a cyclone heating multi-connected module unit, a roller driving sand collapse kettle, a separated oil storage device, a horizontal centrifuge and a water tank, and also provides a deoiling method, wherein the composite feeder comprises the following components: adding a medicament a into oily sediment, feeding the oily sediment into a ball mill through a composite feeding machine for ball milling to obtain a pasty raw material, conveying the pasty raw material to a rotational flow heating multi-connected module unit, adding a medicament b, feeding separated oil into a separated oil storage device, feeding primary separated material into a roller to drive sand to collapse a decomposition kettle, adding a medicament c, performing reaction separation, feeding the oil into the separated oil storage device, performing bubble fracture on the foam by air flow of an air blowing device, feeding the silt-like material into a horizontal centrifuge, centrifugally discharging mud and sand, and feeding water into a water tank. The invention does not need special protection measures, does not produce substandard discharge, avoids higher reaction conditions of high temperature and high pressure in a thermal cracking method, overcomes the influence of the environment in a microbiological method on the microbiological degradation, and ensures that the oil content of the treated silt is less than or equal to 0.3 percent.

Description

Harmless oil silt deoiling system and oil silt deoiling method

Technical Field

The invention belongs to the technical field of deoiling of oil sediment, and particularly relates to a system and a method for deoiling of harmless oil sediment.

Background

In the process of oil production and exploitation, all large oil and gas fields in China have inevitable discharge and leakage. The long-term accumulation causes serious hidden troubles of soil pollution and water source pollution. At present, each large oil field completely develops the treatment and treatment work of the polluted soil in the oil and gas area according to the specific requirements of the national environmental protection strategy, wherein the deoiling and harmless treatment of oil-containing silt is the biggest problem. The difficulty is mainly focused on the following three aspects: one is that the composition of the processing object is complex and variable. The oil field oil sediment is generated and stacked in a wide range of regions, and the generation time can even trace back to the fifties of the last century. The various garbage and impurities are particularly easy to cause the phenomena of equipment such as blockage, blockage and suffocation. Secondly, the chemical components such as the oil content of the processed object are unstable, and the corresponding adjustment of the medicament components, the processing temperature and the like is a great challenge. Thirdly, the oil content of the treated sandy soil is difficult to reach the standard (the national standard is less than or equal to 0.3 percent).

At present, the methods for treating harmless oil sludge and sand and deoiling mainly comprise a thermal cracking method and a microbiological method, but the reaction conditions of thermal cracking are high temperature and high pressure, so that the methods have the defects of flammability and explosiveness, and the microbiological method is greatly influenced by natural environment, temperature and humidity and has lower treatment efficiency.

Disclosure of Invention

The invention aims to solve the technical problem of providing a system for deoiling harmless oil sludge and sand and a method for deoiling the oil sludge and sand, wherein no special protection process and measure are needed for hazard and environmental protection in the method, substandard discharge cannot be generated, higher reaction conditions of high temperature and high pressure in a thermal cracking method are avoided, and the influence of environmental conditions in a microbiological method on microbial degradation is overcome.

In order to solve the technical problems, the invention adopts the technical scheme that: the invention relates to a harmless oil silt deoiling system, which comprises a composite feeder, a ball mill, a cyclone heating multi-connected module unit, a roller driving sand disintegration kettle, a separated oil storage device, a horizontal centrifuge and a water tank for collecting water drained after centrifugal separation of the horizontal centrifuge; the discharge port a of the composite feeding machine is connected with the inlet of the ball mill through a pipeline, the outlet of the ball mill is connected with the feed port b of the rotational flow heating multi-connected module unit through a pipeline, the discharge port b of the rotational flow heating multi-connected module unit is connected with the feed port c of the roller driving sand collapse decomposition kettle through a pipeline, the separated oil outlet of the roller driving sand collapse decomposition kettle is connected with a separated oil storage device through a pipeline, and the discharge port c of the roller driving sand collapse decomposition kettle is connected with the inlet of the horizontal centrifuge through a pipeline provided with a sand pump; the water pool is arranged at the water outlet of the horizontal centrifuge;

the composite feeding machine comprises a feeding hopper a, a conveying belt assembly and a spiral conveyor, the conveying belt assembly comprises a conveying belt, an inclined table board and a ladder pile type support, the inclined table board is supported and fixed through the support, a plurality of groups of groove type roller sets are uniformly distributed on the upper end face of the inclined table board, a plurality of parallel lower carrier rollers are uniformly distributed on the lower end face of the inclined table board, turning rollers are arranged at two ends of the inclined table board, the conveying belt is integrally in a closed annular shape and is arranged on the groove type roller sets, the parallel lower carrier rollers and the turning rollers in a tight attaching mode, the turning rollers are driven through a motor a fixedly arranged on one side of the inclined table board, the groove type roller sets comprise a horizontal roller in the middle and inclined rollers symmetrically arranged on two sides of the horizontal roller, one horizontal roller and two inclined rollers form a trapezoidal groove, the feeding hopper a is, a material conveying hopper is arranged below the higher end of the conveying belt, the spiral conveyor comprises a rectangular strip-shaped conveyor main body and shaftless spiral blades arranged in the conveyor main body, the top surface of the conveyor main body is open and is provided with a material receiving hopper vertically corresponding to the material conveying hopper, and a motor b and a material outlet a for driving the shaftless spiral blades are respectively arranged on two end surfaces of the conveyor main body along the length direction;

the cyclone heating multi-connected module unit comprises a plurality of unit modules which are connected in parallel, two to three unit modules in the unit modules are combined into a group, the unit modules are arranged in a stepped manner or in a stepped manner according to each group, a height difference of 1.5m is formed between adjacent steps, a valve and a sand pump are arranged on a pipeline for communicating the unit modules, each unit module comprises a tank body, a heating system and a stirring system, a feeding hole b, a discharging hole b, a dosing hole and an overflow hole are formed in the tank body, the heating system is a metal coil pipe which is fixedly arranged on the inner wall of the tank body, two ends of the metal coil pipe extend out of the tank body to be connected with an external liquid heat source, the stirring system comprises a stirring motor, a transmission component, a stirring shaft and a stirring head, the stirring motor is arranged on the top surface of the tank body, and is in transmission connection with one end, the other end of the stirring shaft is uniformly provided with a plurality of stirring heads around the axis, and the tank bodies of the plurality of unit modules are communicated with each other; the overflow port is connected with the separated oil storage device through a pipeline;

the roller driving sand collapse decomposition kettle comprises a main container, a sand driving roller, an oil scraping device and an air blowing device, wherein the sand driving roller transversely runs through the main container and is arranged, the sand driving roller comprises a conveying shaft 40 and a conveying shaft, the conveying shaft is driven by a motor c, a feed inlet c, an overflow port, a separated oil outlet and a discharge outlet c are formed in the main container, the air blowing device is installed at the feed inlet c, the oil scraping device is installed above the sand driving roller, a guide plate is arranged between the sand driving roller and the oil scraping device, the oil scraping device is arranged at the top of the main container in a plurality of and uniformly distributed mode, the oil scraping device comprises an oil scraping plate, a synchronous chain belt and a motor d, the motor d is fixedly installed on the top plate of the main container, two ends of the synchronous chain belt are connected with synchronous gears in an engaged mode, one of the synchronous gears is in transmission connection with the motor d, two rows of synchronous gears in the oil scraping device are positioned and installed through two support shafts, and the support shafts are fixedly installed in the main container; the rotating directions of the adjacent motors d are opposite, so that the oil scraping plates in the adjacent oil scraping devices move oppositely to ensure that both sides of the guide plate can smoothly gather the upper-layer separated oil and discharge the oil.

Preferably, two ends of the horizontal roller are provided with a first connecting seat fixedly connected to the upper surface of the inclined table top, a central shaft of the horizontal roller is rotatably installed in the first connecting seat through a bearing, two opposite outer sides of the two symmetrically arranged inclined rollers are provided with a second connecting seat fixedly connected to the upper surface of the inclined table top, the height of the second connecting seat is higher than that of the first connecting seat, one end of the central shaft of the inclined roller is rotatably installed in the first connecting seat through a bearing, the other end of the central shaft of the inclined roller is rotatably installed in the second connecting seat through a bearing, the first connecting seat is provided with an inclined plane perpendicular to the central shaft of the inclined roller, the second connecting seat is provided with a bending section perpendicular to the central shaft of the inclined roller, the lower end surface of the inclined table top is fixedly connected with a third connecting seat, and the central shaft of the parallel lower carrier roller is rotatably installed on the third connecting seat through a, the number of the turning rollers is two, and the turning rollers are arranged on the upper end face of the inclined table top through a fourth connecting seat; the horizontal roller and the inclined roller form a conveying groove channel with a trapezoidal section, so that the conveying capacity of a conveying belt can be effectively increased, and hardened and sticky materials can be prevented from falling off from the conveying belt; the feed hopper a and the material conveying hopper can be placed on the ground through the support frame, and the feed hopper a and the material conveying hopper can also be fixedly arranged on the side end face of the inclined table top; the conveying belt assemblies can be provided with a plurality of groups according to the actual site requirements, the plurality of groups of conveying belt assemblies gather materials in the screw conveyor through the conveying hopper, and when the work site is dispersed, the materials can be sorted and fed synchronously in a plurality of areas, so that the work efficiency is greatly improved; the spiral conveyor is placed on the working ground through a support frame, and a movable end cover plate is arranged on the discharge port a.

Preferably, the feed port b and the overflow port are arranged at the upper end of the side wall of the tank body, the dosing port is arranged on the top surface of the tank body, the discharge port b is arranged at the lower end of the side wall of the tank body, the feed port b, the discharge port b and the overflow port are all connected with pipelines through flange plates, and valves are arranged on the pipelines; the parallel connection number range of the unit modules is 2-9, due to the height difference formed by the step arrangement, the materials containing most oil continuously float upwards and are timely recovered, and sand grains with the largest specific gravity continuously settle, so that the separation effect similar to gravity separation is formed; the transmission assembly comprises a belt and a belt pulley, the belt pulley is fixedly connected with the stirring shaft, the belt pulley is connected with an output rotating shaft of the stirring motor through the belt, one end of the stirring shaft opposite to the belt pulley is connected with a mounting seat a in a key mode, and a plurality of cuboid stirring heads are movably inserted in the mounting seat a in a splicing mode; the metal coil pipe is of a coil pipe structure that a whole metal pipeline is formed into a plurality of coil pipes through thermoplastic forming and is wound and coiled, and a pipe clamp used for fixing the metal coil pipe is arranged on the metal coil pipe; hot oil can be introduced into the metal coil pipe to heat pasty fluid materials in the tank body.

Preferably, the motor c is a low-speed large-torque variable-frequency speed reduction motor, the motor c is mounted on a motor support, the motor support is placed beside the main container, an output rotating shaft of the motor c is in transmission connection with one end of the conveying shaft, two ends of the conveying shaft penetrate through the side wall of the main container, a bearing is arranged between the conveying shaft and the main container, the conveying shaft is supported by the bearing to realize rotation of the conveying shaft, and a sealing ring is arranged on the main container at a position penetrating through the conveying shaft; the guide plate is a metal sieve plate, the section of the guide plate is in an inverted V shape, and the outline of a position line fixedly connected with the main container is in a V shape; the sand driving roller is arranged on the bottom of the main container, the feed inlet c is arranged at the top of one side wall of the main container, the overflow port is arranged at the top of the other side wall of the main container, which is opposite to the feed inlet c, the separated oil outlet is arranged at the lowest position of the main container, which corresponds to the guide plate, the discharge port c is arranged at one side, which is far away from the feed inlet c, of the bottom of the main container, the conveying direction of the sand driving roller is from the feed inlet c to the overflow port, the overflow port is externally connected with a pipeline and a valve to be connected to an external storage device, and the overflow port can automatically send out excessive separated; the main container is mounted on a support, the support comprises a base, an operating platform, a support rod and a steel step, the support rod is vertically and fixedly connected between the base and the operating platform, the steel step is arranged between the base and the operating platform, and an operating handrail is arranged on the operating platform; gas blowing device includes the rotating motor and installs at the epaxial flabellum of rotating motor, the vertical installation downwards of rotating motor is on main part container roof, the flabellum is located directly over the guide plate central line, the flabellum blows off the air current and carries along the guide plate, blows open the bubble that produces behind the aggravation of the reaction that will disintegrate, guarantees the recovery effect of upper oil.

The invention also provides a method for deoiling oil sediment by using the harmless oil sediment deoiling system, which comprises the following steps:

s1, adding a medicament a into the preliminarily sorted oily sediment, stirring the oily sediment into paste to obtain a material to be processed, enabling the material to be processed to fall on a conveying belt through a feed hopper a of the composite feeding machine, conveying the material to be processed from a lower end to a higher end to fall into a conveying hopper, enabling the material to be processed falling from the conveying hopper to enter a conveyor main body through a collecting hopper, entering the ball mill through an inlet of the ball mill through a discharge port a under the pushing action of a shaftless spiral blade, and carrying out ball milling for 10-20 min at the temperature of 20-30 ℃ to obtain a paste raw material; the agent a is formed by mixing alkaline detergent and water; the adding amount of the medicament a is that 10 to 15 parts of alkaline detergent and 1000 to 15000 parts of water are added into 1000 parts of the preliminarily sorted oily sediment;

conveying the pasty raw materials obtained in S2 and S1 from an outlet of a ball mill to a feed inlet b of a rotational flow heating multi-connected module unit, enabling the pasty raw materials to enter a tank body, starting a stirring motor, performing rotational flow heating at the temperature of 45-65 ℃ and the rotating speed of 85-250 r/min, adding a medicament b from a medicament feeding port after the pasty raw materials are heated to a constant temperature, separating out primary separated materials with high solid content and much oil stain and preliminarily obtained oil, pumping the primary separated materials to a roller shaft sand driving disintegration kettle through a sand pumping pump through a discharge port b for subsequent reaction, continuously performing rotational flow heating on the rotational flow heating multi-connected module unit, and collecting the preliminarily obtained oil through an overflow port to enter a separated oil storage device; the medicament b is formed by mixing alkyl sulfonate, methylene sodium bis (methylnaphthalene) sulfonate, sodium pyrophosphate, polyacrylamide and a penetrating agent JFC-M2; the addition amount of the medicament b is that every 1000 parts of pasty raw materials are added with 5-13 parts of alkyl sulfonate, 3-7 parts of methylene sodium bis-methylnaphthalene sulfonate, 10 parts of sodium pyrophosphate, 2-5 parts of polyacrylamide and 2-7 parts of penetrating agent JFC-M;

the primary separated material obtained in the S3 and S2 enters a main container through a feed inlet c of a roller sand driving disintegration kettle, when the primary separated material is over a sand driving roller, a motor c is started, a medicament c is added, the primary separated material is overturned and pushed forwards along with the sand driving roller and reacts with the medicament c under the condition that the temperature is 70-80 ℃, and oil and silt-shaped materials in the primary separated material are separated; the medicament c is formed by mixing a raw material flocculating agent and a coating agent; the addition amount of the medicament c is that 5 to 10 parts of flocculating agent and 5 to 6 parts of coating agent are added into every 1000 parts of primary separated material;

when oil is separated out and floats on the uppermost layer of the primary separated material in the main container, the motor d is started, the oil scraping plate translates along the synchronous chain belt, and under the combined action of the guide plate and the oil scraping plate, the oil forms a local oil enrichment area at the pit of the guide plate and is collected through a separated oil outlet to enter a separated oil storage device; when foam is formed on the surface of the oil liquid, the blowing device is started, and the generated air flow moves along the guide plate to crack the foam;

and (3) pumping the silt-like materials separated in the S4 and S3 out of a discharge port c of the roller driven sand disintegration kettle through a sand pump, feeding the silt-like materials into a horizontal centrifuge, centrifuging at the rotating speed of 1500-2800 r/min, discharging silt and sand from a slag outlet of the horizontal centrifuge after centrifuging, and feeding water discharged after centrifuging into a water tank to finish deoiling the oily silt.

Preferably, the moisture content of the material to be treated in S1 is 60%.

Preferably, the ratio of material balls in ball milling in S1 is 3: 1.

preferably, the alkaline detergent in S1 is sodium dodecylbenzenesulfonate; the raw material flocculant in the S3 is polyacrylamide; the coating agent is sulfonated phenolic resin.

Preferably, the total time of the cyclone heating in S2 is 0.5 h-2 h.

Preferably, the time for reaction separation in S3 is 2h to 4 h.

Compared with the prior art, the invention has the following advantages:

1. the harmless oil sludge and sand deoiling system is a brand new oil sludge and sand deoiling system, can realize that raw material sorting and feeding, material conveying, medicine adding, medicament proportioning and reaction condition adjustment can be carried out in the system, and realizes harmless deoiling of oil sludge and sand under the condition of continuous operation of the system.

The composite feeding machine in the harmless oil silt deoiling system disclosed by the invention is combined with a spiral conveying mode through belt conveying, so that the phenomena of blocking, falling and the like in the oil silt conveying process can be effectively avoided, the material conveying is safe and stable, the conveying efficiency is high, a plurality of areas can be synchronously conveyed and converged, the working efficiency of oil silt deoiling treatment is greatly improved, and the cost is effectively reduced; the horizontal roller and the inclined roller are arranged on the inclined table top to form a groove conveying channel, so that the conveying capacity can be effectively improved, and materials on a conveying belt are prevented from falling off; through shaftless helical blade pay-off, can carry out certain breakage to the thick oily sediment raw materials of tie when the pay-off, avoid blockking up transfer passage, reduce and maintain the operation cost.

The rotational flow heating multi-connected module unit in the harmless oil sediment deoiling system adopts a modular structure design, a plurality of unit modules are connected together in parallel, and the materials are classified and separated according to the separation speed and the difficulty degree of the materials, so that the deoiling treatment efficiency and treatment effect of the materials are greatly improved, the time is saved, and the capital investment can be effectively reduced; the single unit module can integrate the functions of heating, rotational flow stirring, dosing and gravity layering, optimizes and integrates the traditional process device, has good use effect, greatly saves the investment and improves the treatment efficiency; the metal coil is filled with a heat source to heat materials in the tank body, the materials are stirred in a rotational flow mode through the rotation of the stirring head, the agents b are added into the pasty raw materials in time to react to promote separation of oil, water and solid phases, and the materials are stirred in a rotational flow mode while being heated, so that the defect that a single heating kettle is easy to stick to the wall in the traditional process is overcome, and the problems that the materials are difficult to sort and separate and the secondary material mixing pollution in the later period is large are greatly solved.

According to the system for deoiling the oil sludge and the oil by using the roller to drive the sand disintegrating kettle, the deoiling and the separation of fine particles can be effectively realized, a dangerous thermal cracking process for discharging harmful gas is replaced, secondary pollution is avoided, an environment-friendly and efficient treatment mode is provided for deoiling and deoiling the oil sludge and the oil sludge, and the system has important environment-friendly effect and economic benefit; the paste materials are dynamically rolled through the pushing of the sand driving roller, the repeated contact reaction of the medicament and the materials is realized, the disintegration reaction efficiency of oily components in the oily sand is improved, the repeated pollution of stirring is avoided, and the sectional cleaning and the timely separation and recovery of the materials are realized through the simultaneous working of a plurality of groups of oil scraping devices; the air blowing device is arranged right above the central line of the guide plate to break bubbles generated during the disintegration reaction, so that the gathering and discharging efficiency of the separated oil is effectively improved, and the phenomenon that a large amount of bubbles are gathered and enter the material again to form secondary pollution to influence the oil content of the emission to influence the environmental index of the emission is avoided; the main container of the roller sand-driving disintegration kettle is arranged on a support, the support is provided with a steel step and an operation platform, the main container with larger volume can be conveniently controlled and operated by an operator, and a rotary motor is started to blow air in time when bubbles are generated during reaction aggravation; the material discharged from the discharge port c can reach the environmental protection discharge standard only by simple dehydration and drying treatment, the dangerous thermal cracking process which can discharge harmful gas is omitted, the separation effect is good, and the environmental protection benefit is high

2. The harmless oil sediment deoiling system is a brand-new oil sediment deoiling system, by means of the deoiling method of the harmless oil sediment deoiling system, no special protection process and measure are needed for hazard treatment and environmental protection, substandard discharge cannot be generated, high-temperature and high-pressure reaction conditions in a thermal cracking method are avoided, the influence of environmental conditions in a microbial method on microbial degradation is overcome, and the oil content of the treated sediment is less than or equal to 0.3%.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic diagram showing the overall structure of the system for deoiling a harmless oil silt according to the present invention.

Fig. 2 is a schematic view of the overall structure of the composite feeder of the present invention.

Fig. 3 is a side view cross-sectional structural view of a conveyor belt assembly of the composite feeding machine of the present invention.

Fig. 4 is a schematic front view of the screw conveyor in the composite feeder of the present invention.

FIG. 5 is a schematic top view of the screw conveyor of the composite feeder of the present invention.

Fig. 6 is a schematic view of a main half-section structure of a rotational flow heating multi-connected modular unit in the invention.

Fig. 7 is a schematic top view structure diagram of a cyclone heating multi-connected modular unit in the invention.

FIG. 8 is a schematic view of the connection structure of the stirring shaft and the stirring head of the multi-connected module unit for cyclone heating in the invention.

FIG. 9 is a schematic structural diagram of a roller sand-driving disintegrating kettle in the invention.

FIG. 10 is a schematic diagram of the side view structure of the roller sand-driving disintegrating kettle of the invention.

FIG. 11 is a schematic top view of a roller sand-driving disintegrating kettle according to the present invention.

Fig. 12 is a schematic view of the mounting structure of the main container and the bracket of the roller sand-driving disintegration kettle of the invention.

Fig. 13 is a schematic structural diagram of an oil scraping device of the roller sand-driving disintegrating kettle in the invention.

Description of reference numerals:

1-feed hopper a; 2, conveying belt; 3, inclining the table top;

4-a plurality of groups of groove-shaped roller sets; 5, parallel lower supporting rollers; 6, a bracket;

7-a turning roller; 8-a conveying hopper; 9-a receiving hopper;

10-a conveyor body; 11-a support frame; 12-horizontal rolls;

13-a tilting roll; 14-a first connection seat; 15-a second connecting seat;

16-a third connecting seat; 17-shaftless helical blades; 18-motor b;

19-discharge port a; 20-composite feeding machine; 21-a tank body;

22-stirring motor; 23-stirring shaft; 24-a stirring head;

25-a metal coil; 26-overflow port; 27-discharge port b;

28, pipe clamp; 29-feed inlet b; 30-a medicine adding port;

31-a belt; 32-a belt pulley; 33-mounting seat a;

34-cyclone heating multi-connected module unit; 35-ball mill; 36-a separated oil storage means;

37-horizontal centrifuge; 38-a main body container; 39-oil scraping device;

40-a conveying shaft; 41-helical blade b; 42-feed inlet c;

43-overflow port; 44-separated oil outlet; 45-a discharge port c;

46-a blowing device; 47-a baffle; 48-oil scraper;

49-synchronous chain belt; 50-motor d; 51-a base;

52-an operation platform; 53-a support bar; 54-steel step;

55-operating the armrest; 56-rotating motor; 57-fan blades;

58-synchronous gear; 59-mounting seat b; 60-roller sand-driving disintegrating kettle;

61-pool.

Detailed Description

Example 1

As shown in fig. 1 to 13, the system for deoiling a harmless oil sediment of this embodiment includes a composite feeder 20, a ball mill 35, a cyclone heating multi-connected module unit 34, a roller sand driving disintegrating kettle 60, a separated oil storage device 36, a horizontal centrifuge 37, and a water tank 61; the discharge port a19 of the composite feeder 20 is connected with the inlet of the ball mill 35 through a pipeline, the outlet of the ball mill 35 is connected with the feed port b29 of the cyclone heating multi-connected module unit 34 through a pipeline, the discharge port b27 of the cyclone heating multi-connected module unit 34 is connected with the feed port c42 of the roller driven sand disintegration kettle 60 through a pipeline, the separated oil outlet 44 of the roller driven sand disintegration kettle 60 is connected with the separated oil storage device 36 through a pipeline, and the discharge port c45 of the roller driven sand disintegration kettle 60 is connected with the inlet of the horizontal centrifuge 37 through a pipeline provided with a sand pump; the water tank 61 is arranged at the water outlet of the horizontal centrifuge 37;

the composite feeding machine 20 comprises a feeding hopper a1, a conveying belt component and a spiral conveyor, the conveying belt component comprises a conveying belt 2, an inclined table top 3 and a stepped pile type support 6, the inclined table top 3 is obliquely arranged and supported and fixed through the support 6, a plurality of groups of groove type roller sets 4 are uniformly distributed on the upper end face of the inclined table top 3, a plurality of parallel lower carrier rollers 5 are uniformly distributed on the lower end face of the inclined table top 3, turning rollers 7 are arranged at the two ends of the inclined table top 3, the conveying belt 2 is integrally in a closed annular shape and is tightly stretched and attached to the groove type roller sets 4, the parallel lower carrier rollers 5 and the turning rollers 7, the turning rollers 7 are driven by a motor a fixedly arranged on one side of the inclined table top 3, each groove type roller set 4 comprises a horizontal roller 12 positioned in the middle and inclined rollers 13 symmetrically arranged on the two sides of the horizontal roller 12, and one horizontal roller 12, the feeding hopper a1 is arranged above the lower end of the conveying belt 2, the conveying hopper 8 is arranged below the higher end of the conveying belt 2, the spiral conveyor comprises a rectangular strip-shaped conveyor main body 10 and shaftless spiral blades 17 arranged in the conveyor main body 10, the top surface of the conveyor main body 10 is open and is provided with a receiving hopper 9 vertically corresponding to the position of the conveying hopper 8, and the two end surfaces of the conveyor main body 10 along the length direction are respectively provided with a motor b18 and a discharge port a19 for driving the shaftless spiral blades 17;

the cyclone heating multi-connected modular unit 34 comprises a plurality of parallel unit modules, a plurality of two to three unit modules are combined into a group in the unit modules, the unit modules are arranged in a ladder manner according to the group or according to one unit, a height difference of 1.5m is formed between adjacent ladders, a valve and a sand pump are arranged on a pipeline for communicating the unit modules, each unit module comprises a tank body 21, a heating system and a stirring system, a feed inlet b29, a discharge outlet b27, a medicine adding port 30 and an overflow port 26 are formed in the tank body, the heating system is a metal coil pipe 25, the metal coil pipe 25 is fixedly installed on the inner wall of the tank body 21, two ends of the metal coil pipe 25 extend out of the tank body 21 to be connected with an external liquid heat source, the stirring system comprises a stirring motor 22, a transmission assembly, a stirring shaft 23 and a stirring head 24, the stirring motor 22 is installed on the top surface of the tank body 21, the stirring motor 22 is, a plurality of stirring heads 24 are uniformly distributed at the other end of the stirring shaft 23 around the axis, and the tank bodies of the plurality of unit modules are communicated with each other; the overflow port 26 is connected with the separated oil storage device 36 through a pipeline;

the roller driving sand disintegrating kettle 60 comprises a main body container 38, a sand driving roller, an oil scraping device 39 and an air blowing device, wherein the sand driving roller transversely penetrates through the main body container 38, the sand driving roller comprises a conveying shaft 40 and a spiral blade b41 arranged on the conveying shaft 40, the conveying shaft 40 is driven by a motor c, a feed inlet c42, an overflow port 43, a separated oil outlet 44 and a discharge port c45 are formed in the main body container 38, the air blowing device 46 is installed at the feed inlet c42, the oil scraping device 39 is installed above the sand driving roller, a guide plate 47 is arranged between the sand driving roller and the oil scraping device 39, the oil scraping device 39 is arranged at the top in the main body container 38 in a plurality of and uniformly distributed mode, the oil scraping device 39 comprises an oil scraping plate 48, a synchronous chain belt 49 and a motor d50, the motor d50 is fixedly installed on the top plate of the main body container 38, two ends of the synchronous gear 49 are connected with the synchronous gear 58 in a meshed mode, one of the synchronous gears 58 is in transmission connection with the motor d50, and two rows of synchronous gears in the oil scraping device 39 are positioned and installed through two support shafts which are fixedly installed in the main body container 38; the rotation directions of the adjacent motors d50 are opposite, so that the oil scraping plates 48 in the adjacent oil scraping devices 39 move oppositely to ensure that both sides of the guide plate can smoothly converge the upper layer separated oil and discharge the oil.

In this embodiment, two ends of the horizontal roller 12 are provided with a first connecting seat 14 fixedly connected to the upper surface of the inclined table-board 3, the central shaft of the horizontal roller 12 is rotatably installed in the first connecting seat 14 through a bearing, two opposite outer sides of the two symmetrically arranged inclined rollers 13 are provided with a second connecting seat 15 fixedly connected to the upper surface of the inclined table-board, the height of the second connecting seat 15 is higher than that of the first connecting seat 14, one end of the central shaft of the inclined roller 13 is rotatably installed in the first connecting seat 14 through a bearing, the other end of the central shaft of the inclined roller 13 is rotatably installed in the second connecting seat 15 through a bearing, the first connecting seat 14 is provided with an inclined plane perpendicular to the central shaft of the inclined roller 13, the second connecting seat 15 is provided with a bent section perpendicular to the central shaft of the inclined roller 13, and the lower end surface of the inclined table-board 3 is fixedly connected with a third connecting seat, the central shaft of the parallel lower carrier roller 5 is rotatably arranged on the third connecting seat 16 through a bearing, and the number of the turning rollers 7 is two and is arranged on the upper end surface of the inclined table board 3 through a fourth connecting seat; in the embodiment, the horizontal roller 12 and the inclined roller 13 form a conveying groove channel with a trapezoidal section, so that the conveying capacity of the conveying belt 2 can be effectively increased, and hardened and sticky materials can be prevented from falling off from the conveying belt 2; the feed hopper a1 and the material conveying hopper 4 can be placed on the ground through a support frame, and the feed hopper a1 and the material conveying hopper 4 can also be fixedly arranged on the side end surface of the inclined table top 3; the conveying belt assemblies can be provided with a plurality of groups according to the actual site requirements, the plurality of groups of conveying belt assemblies gather materials in the screw conveyor through the conveying hopper 8, and when the work site is dispersed, the materials can be sorted and fed synchronously in a plurality of areas, so that the work efficiency is greatly improved; the screw conveyer is supported and placed on the working ground through a support frame 11, and a movable end cover plate is arranged on the discharge port a 19.

In this embodiment, the feed port b29 and the overflow port 26 are arranged at the upper end of the side wall of the tank body 21, the chemical feeding port 30 is arranged on the top surface of the tank body 21, the discharge port b27 is arranged at the lower end of the side wall of the tank body 21, the feed port b29, the discharge port b27 and the overflow port 26 are all connected with pipelines through flange plates, and valves are arranged on the pipelines; the parallel connection number range of the unit modules is 2-9; due to the height difference formed by the step arrangement, the materials containing most oil continuously float upwards and are recovered in time, and the sand particles with the largest specific gravity continuously settle, so that the separation effect similar to gravity separation is formed; in the embodiment, the stirring motor 22 is arranged in the bracket above the tank body, the stirring motor 22 is a variable-frequency speed-regulating motor, and the stirring motor 22 is connected with the top surface of the tank body 21 through a damping high-strength bolt, so that the stirring tank is firm and reliable, and can be conveniently disassembled, assembled and maintained; the transmission assembly comprises a belt 31 and a belt pulley 32, the belt pulley 32 is fixedly connected with the stirring shaft 23, the belt pulley 32 is connected with an output rotating shaft of the stirring motor 22 through the belt 31, one end key of the stirring shaft 23 opposite to the belt pulley 32 is connected with a mounting seat a33, and a plurality of cuboid stirring heads 24 are movably inserted on the mounting seat a 33; the metal coil pipe 25 is a coil pipe structure formed by a whole metal pipeline through thermoplastic molding and winding a plurality of turn pipes, and a pipe clamp 28 for fixing the metal coil pipe is arranged on the metal coil pipe 25; hot oil can be introduced into the metal coil 25 to heat the pasty fluid material in the tank 21.

In this embodiment, the main container 38 is wrapped with an insulating layer; the synchronous chain belt 49 is positioned below the upper top surface of the main body container 38, a gap for the oil scraping plates 48 to move through is reserved between the synchronous chain belt 49 and the inner side wall of the main body container 38, the oil scraping plates 48 are L-shaped metal plates, a mounting seat b59 is fixedly connected to the synchronous chain belt 49, the oil scraping plates 48 are fixedly connected to a mounting seat b59 through bolts, two oil scraping plates 48 are uniformly arranged on the upper surface and the lower surface of one synchronous chain belt 49 respectively, and two oil scraping plates 48 are guaranteed to work on the liquid surface all the time when the synchronous chain belt 49 rotates; the motor c is a low-speed large-torque variable-frequency speed reducing motor, the motor c is mounted on a motor support, the motor support is placed beside the main container 38, an output rotating shaft of the motor c is in transmission connection with one end of the conveying shaft, two ends of the conveying shaft 40 penetrate through the side wall of the main container 38, a bearing is arranged between the conveying shaft 40 and the main container 38, the conveying shaft 40 is supported by the bearing to rotate, and a sealing ring is arranged on the main container 38 at a position where the conveying shaft 40 penetrates through; the guide plate 47 is a metal sieve plate, the section of the guide plate 47 is in an inverted V shape, and the line profile at the position where the guide plate 47 is fixedly connected with the main body container 38 is in a V shape; the feed port c42 is arranged at the top of one side wall of the main container 38, the overflow port 43 is arranged at the top of the other side wall of the main container 38 opposite to the feed port c42, the separated oil outlet 44 is arranged at the lowest position of the main container 38 corresponding to the guide plate 47, the discharge port c45 is arranged at one side of the bottom of the main container 38 far away from the feed port c42, the conveying direction of the sand driving roller is from the feed port c42 to the overflow port 43, an external pipeline and a valve of the overflow port 43 are connected to an external storage device, and the overflow port 43 can automatically convey excessive separated oil to ensure that the liquid level of the oil is always a certain distance below the top surface of the main container 38; the main container 38 is mounted on a support, the support comprises a base 51, an operating platform 52, a support rod 53 and a steel step 54, the support rod 53 is vertically and fixedly connected between the base 51 and the operating platform 52, the steel step 54 is arranged between the base 51 and the operating platform 52, and an operating handrail 55 is arranged on the operating platform 52; gas blowing device 46 includes rotary motor 56 and installs at rotary motor 56 epaxial flabellum 57, the vertical downwardly mounting of rotary motor 56 is on main part container 38 roof, flabellum 57 is located directly over guide plate 47 central line, flabellum 57 blows off the air current and carries along guide plate 47, blows open the bubble that produces after will disintegrating reaction aggravation, guarantees the recovery effect of upper oil.

Example 2

This example is a method of deoiling silt in the system for deoiling innoxious oil silt of example 1, which comprises:

s1, adding a medicament a into the preliminarily sorted oily sediment, stirring the oily sediment into paste to obtain a material to be processed, enabling the material to be processed to fall on the conveying belt 2 through a feed hopper a1 of the composite feeding machine 20, conveying the material to be processed from the lower end to the higher end to fall into the conveying hopper 8, enabling the material to be processed falling from the conveying hopper 8 to enter the conveyor main body 10 through the collecting hopper 9, entering the ball mill 35 through the discharge port a19 under the pushing action of the shaftless spiral blade 17 through the inlet of the ball mill 35, and performing ball milling for 10min at the temperature of 20-30 ℃ to obtain a paste raw material; the medicament a is formed by mixing an alkaline detergent (sodium dodecyl benzene sulfonate) and water; the adding amount of the medicament a is that 10 parts of alkaline detergent and 15000 parts of water are added into every 1000 parts of the preliminarily sorted oily sediment; the water content of the material to be treated is 60 percent; the material ball ratio during ball milling is 3: 1;

conveying the pasty raw materials obtained in S2 and S1 from an outlet of a ball mill 35 to a feed inlet b29 of a cyclone heating multi-connected module unit 34, enabling the pasty raw materials to enter a tank body 21, starting a stirring motor 22, carrying out cyclone heating at the temperature of 45 ℃ and the rotating speed of 250r/min, adding a medicament b from a medicament adding port 30 after the pasty raw materials are heated to a constant temperature, separating out primary separated materials with large solid content and much oil stain and preliminarily obtained oil, pumping the primary separated materials to a roller sand driving and disintegrating kettle 60 through a sand pumping pump through a discharge port b27 for subsequent reaction, continuously carrying out cyclone heating on the cyclone heating multi-connected module unit 34, and collecting the preliminarily obtained oil through an overflow port 26 to enter a separated oil storage device 36; the medicament b is formed by mixing alkyl sulfonate, methylene sodium bis (methylnaphthalene) sulfonate, sodium pyrophosphate, polyacrylamide and a penetrating agent JFC-M2; the addition amount of the medicament b is that 5 parts of alkyl sulfonate, 3 parts of methylene sodium bis (methylnaphthalene sulfonate), 10 parts of sodium pyrophosphate, 5 parts of polyacrylamide and 7 parts of penetrating agent JFC-M are added into each 1000 parts of pasty raw materials; the total time of the rotational flow heating is 2 hours;

the primary separated material obtained in the S3 and S2 enters the main container 38 through a feed inlet c42 of the roller sand driving disintegration kettle 60, when the primary separated material does not pass through the sand driving roller, a motor c is started, a medicament c is added, the primary separated material is overturned and pushed forward along with the sand driving roller and reacts with the medicament c for 4 hours at the temperature of 70 ℃, and oil liquid and silt-like materials in the primary separated material are separated; the medicament c is formed by mixing a raw material flocculating agent and a coating agent; the addition amount of the medicament c is that 5 parts of flocculating agent and 5 parts of coating agent are added into every 1000 parts of primary separated material;

when the oil is separated out and floats on the uppermost layer of the primary separation material in the main body container 38, the motor d50 is started, the oil scraping plate 48 moves horizontally along the synchronous chain belt 49, under the combined action of the flow guide plate 47 and the oil scraping plate 48, the oil forms a local oil enrichment area at the pit of the flow guide plate 47, and is collected into the separation oil storage device 36 through the separation oil outlet 44; when the foam is formed on the surface of the oil liquid, the air blowing device 46 is started, and the generated air flow moves along the guide plate 47 to crack the foam;

the silt-like materials separated in the S4 and S3 are pumped out from a discharge port c45 of the roller driven sand disintegration kettle 60 through a sand pump, enter the horizontal centrifuge 37, are centrifuged at the rotation speed of 1500r/min, mud and sand are discharged from a slag outlet of the horizontal centrifuge 37 after centrifugation, water discharged after centrifugation enters the water pool 61 to complete de-oiling of oily silt, and water collected in the water pool 61 is conveyed through a pipeline and is recycled as a supplementary raw material of the medicament a.

This example finally yielded an oil content of 0.1% in the mud and sand discharged from the outlet of the horizontal centrifuge.

Example 3

The system for deoiling harmless oil sediment is the same as that in the embodiment 1, and the method for deoiling harmless oil sediment comprises the following steps:

s1, adding a medicament a into the preliminarily sorted oily sediment, stirring the oily sediment into paste to obtain a material to be processed, enabling the material to be processed to fall on the conveying belt 2 through a feed hopper a1 of the composite feeding machine 20, conveying the material to be processed from the lower end to the higher end to fall into the conveying hopper 8, enabling the material to be processed falling from the conveying hopper 8 to enter the conveyor main body 10 through the collecting hopper 9, entering the ball mill 35 through the discharge port a19 under the pushing action of the shaftless spiral blade 17 through the inlet of the ball mill 35, and carrying out ball milling for 20min at the temperature of 20-30 ℃ to obtain a paste raw material; the medicament a is formed by mixing an alkaline detergent (sodium dodecyl benzene sulfonate) and water; the adding amount of the medicament a is that 15 parts of alkaline detergent and 1000 parts of water are added into 1000 parts of the preliminarily sorted oily sediment; the water content of the material to be treated is 60 percent; the material ball ratio during ball milling is 3: 1;

conveying the pasty raw materials obtained in S2 and S1 from an outlet of a ball mill 35 to a feed inlet b29 of a cyclone heating multi-connected module unit 34, enabling the pasty raw materials to enter a tank body 21, starting a stirring motor 22, carrying out cyclone heating at the temperature of 65 ℃ and the rotating speed of 85r/min, adding a medicament b from a medicament adding port 30 after the pasty raw materials are heated to a constant temperature, separating out primary separated materials with large solid content and much oil stain and preliminarily obtained oil, pumping the primary separated materials to a roller sand driving and disintegrating kettle 60 through a sand pumping pump through a discharge port b27 for subsequent reaction, continuously carrying out cyclone heating on the cyclone heating multi-connected module unit 34, and collecting the preliminarily obtained oil through an overflow port 26 to enter a separated oil storage device 36; the medicament b is formed by mixing alkyl sulfonate, methylene sodium bis (methylnaphthalene) sulfonate, sodium pyrophosphate, polyacrylamide and a penetrating agent JFC-M2; the addition amount of the medicament b is that 13 parts of alkyl sulfonate, 7 parts of methylene sodium bis (methylnaphthalene sulfonate), 10 parts of sodium pyrophosphate, 2 parts of polyacrylamide and 2 parts of penetrating agent JFC-M are added into each 1000 parts of pasty raw materials; the total time of the rotational flow heating is 0.5 h;

the primary separated material obtained in the S3 and S2 enters the main container 38 through a feed inlet c42 of the roller sand driving disintegration kettle 60, when the primary separated material does not pass through the sand driving roller, a motor c is started, a medicament c is added, the primary separated material is overturned and pushed forward along with the sand driving roller and reacts with the medicament c for 2 hours at the temperature of 80 ℃, and oil liquid and silt-like materials in the primary separated material are separated; the medicament c is formed by mixing a raw material flocculating agent and a coating agent; the addition amount of the medicament c is that 10 parts of flocculating agent and 6 parts of coating agent are added into every 1000 parts of primary separated material;

the silt-like materials separated in the S4 and S3 are pumped out from a discharge port c45 of the roller driven sand disintegration kettle 60 through a sand pump, enter the horizontal centrifuge 37, are centrifuged at the rotation speed of 2800r/min, mud and sand are discharged from a slag outlet of the horizontal centrifuge 37 after centrifugation, water discharged after centrifugation enters the water tank 61 to complete de-oiling of oily silt, and water collected in the water tank 61 is conveyed through a pipeline and is recycled as a supplementary raw material of the medicament a.

This example finally yielded an oil content of 0.3% in the mud and sand discharged from the outlet of the horizontal centrifuge.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.

Claims

1. A system for deoiling innoxious oil sediment is characterized by comprising a composite feeder (20), a ball mill (35), a cyclone heating multi-connected module unit (34), a roller sand driving disintegrating kettle (60), a separated oil storage device (36), a horizontal centrifuge (37) and a water tank (61); the discharge port a (19) of the composite feeding machine (20) is connected with the inlet of the ball mill (35) through a pipeline, the outlet of the ball mill (35) is connected with the feed port b (29) of the cyclone heating multi-connected module unit (34) through a pipeline, the discharge port b (27) of the cyclone heating multi-connected module unit (34) is connected with the feed port c (42) of the roller sand driving and disintegrating kettle (60) through a pipeline, the separation oil outlet (44) of the roller sand driving and disintegrating kettle (60) is connected with the separation oil storage device (36) through a pipeline, and the discharge port c (45) of the roller sand driving and disintegrating kettle (60) is connected with the inlet of the centrifugal machine (37) through a pipeline provided with a horizontal sand pump; the water tank (61) is arranged at a water outlet of the horizontal centrifuge (37);

composite feeding machine (20) are including feeder hopper a (1), transmission band subassembly and screw conveyer, the transmission band subassembly includes transmission band (2), slope mesa (3) and ladder stake formula support (6), slope mesa (3) slope sets up and supports fixedly through support (6), multiunit cell type roller set (4) have evenly been laid to slope mesa (3) up end, a plurality of parallel snub rollers (5) are evenly laid to the lower terminal surface of slope mesa (3), the both ends of slope mesa (3) are provided with diversion roller (7), transmission band (2) wholly are closed cyclic annular to tighten attached setting on cell type roller set (4), parallel snub roller (5) and diversion roller (7), diversion roller (7) are through the motor a drive of fixed mounting in slope mesa (3) one side, cell type roller set (4) are including being located middle horizontal roller (12) and the symmetry setting at the slope roller of horizontal roller (12) both sides (13) The horizontal roller (12) and the two inclined rollers (13) form a trapezoidal groove, the feed hopper a (1) is arranged above the lower end of the transmission belt (2), the conveying hopper (8) is arranged below the higher end of the transmission belt (2), the spiral conveyor comprises a rectangular strip-shaped conveyor main body (10) and shaftless spiral blades (17) arranged in the conveyor main body (10), the top surface of the conveyor main body (10) is open and is provided with a receiving hopper (9) vertically corresponding to the position of the conveying hopper (8), and a motor b (18) and a discharge port a (19) for driving the shaftless spiral blades (17) are respectively arranged on the two end surfaces of the conveyor main body (10) along the length direction;

the cyclone heating multi-connected modular unit (34) comprises a plurality of unit modules connected in parallel, wherein two to three unit modules in the unit modules are combined into a group, the unit modules are arranged in a stepped manner according to the group or one unit module, a height difference of 1.5m is formed between adjacent steps, a valve and a sand pump are arranged on a pipeline for communicating the unit modules, each unit module comprises a tank body (21), a heating system and a stirring system, a feeding hole b (29), a discharging hole b (27), a medicine adding hole (30) and an overflow hole (26) are formed in the tank body, the heating system is a metal coil pipe (25), the metal coil pipe (25) is fixedly installed on the inner wall of the tank body (21), the two ends of the metal coil pipe (25) extend out of the tank body (21) to be connected with an external liquid heat source, and the stirring system comprises a stirring motor (22), a transmission assembly, a stirring shaft (23) and a stirring head, the stirring motor (22) is arranged on the top surface of the tank body (21), the stirring motor (22) is in transmission connection with one end of the stirring shaft (23) through a transmission assembly, a plurality of stirring heads (24) are uniformly distributed at the other end of the stirring shaft (23) around the axis, and the tank bodies of the unit modules are communicated with one another; the overflow port (26) is connected with the separated oil storage device (36) through a pipeline;

the roller shaft drives husky collapse and separates cauldron (60) and includes main body container (38), drives husky roller shaft, frizing device (39) and gas blowing device, transversely run through in main body container (38) and set up and drive husky roller shaft, it includes conveying axle (40) and conveying axle (40) on helical blade b (41) that set up to drive husky roller shaft, conveying axle (40) are driven by motor c, set up feed inlet c (42), overflow mouth (43), separation oil export (44) and discharge gate c (45) on main body container (38), gas blowing device (46) are installed in feed inlet c (42) department, frizing device (39) is installed to the top of driving husky roller shaft, set up guide plate (47) between driving husky roller shaft and frizing device (39), frizing device (39) quantity is a plurality of and all install top in main body container (38), frizing device (39) are including frizing board (48), Synchronous chain belt (49) and motor d (50), motor d (50) fixed mounting is on the roof of main part container (38), the both ends and synchronous gear (58) meshing of synchronous chain belt (49) are connected, one synchronous gear (58) with motor d (50) transmission is connected, two rows of synchronous gears in the frizing device (39) are through two back shaft location installations, back shaft fixed mounting is in main part container (38).

2. The system for deoiling innoxious oil sediment of claim 1, characterized in that both ends of the horizontal roller (12) are provided with a first connecting seat (14) fixedly connected with the upper surface of the inclined table top (3), the central shaft of the horizontal roller (12) is rotatably installed in the first connecting seat (14) through a bearing, two opposite outer sides of the two symmetrically arranged inclined rollers (13) are provided with a second connecting seat (15) fixedly connected with the upper surface of the inclined table top, the height of the second connecting seat (15) is higher than that of the first connecting seat (14), one end of the central shaft of the inclined roller (13) is rotatably installed in the first connecting seat (14) through a bearing, the other end of the central shaft of the inclined roller (13) is rotatably installed in the second connecting seat (15) through a bearing, the first connecting seat (14) is provided with an inclined plane perpendicular to the central shaft of the inclined roller (13), the second connecting seat (15) is provided with a bending section perpendicular to the central shaft of the inclined roller (13), the lower end face of the inclined table top (3) is fixedly connected with a third connecting seat (16), the central shaft of the parallel lower carrier roller (5) is rotatably installed on the third connecting seat (16) through a bearing, and the number of the turning rollers (7) is two and is installed on the upper end face of the inclined table top (3) through a fourth connecting seat; the spiral conveyor is supported and placed on the working ground through a support frame (11).

3. The system for deoiling innoxious oil sediment as defined in claim 1, characterized in that the feed inlet b (29) and the overflow port (26) are opened at the upper end of the side wall of the tank body (21), the chemical feeding port (30) is opened at the top surface of the tank body (21), the discharge outlet b (27) is opened at the lower end of the side wall of the tank body (21), the feed inlet b (29), the discharge outlet b (27) and the overflow port (26) are all connected with the pipeline through flange plates, and each pipeline is provided with a valve; the parallel connection number range of the unit modules is 2-9; the transmission assembly comprises a belt (31) and a belt pulley (32), the belt pulley (32) is fixedly connected with the stirring shaft (23), the belt pulley (32) is connected with an output rotating shaft of the stirring motor (22) through the belt (31), one end of the stirring shaft (23) opposite to the belt pulley (32) is connected with a mounting seat a (33) in a key mode, and a plurality of cuboid stirring heads (24) are movably inserted into the mounting seat a (33) in an inserted mode; and a pipe clamp (28) for fixing the metal coil pipe is arranged on the metal coil pipe (25).

4. The system for deoiling of innoxious oil sediment of claim 1, characterized in that the guide plate (47) is a metal sieve plate, the section of the guide plate (47) is in an inverted V shape, and the line outline of the position where the guide plate (47) is fixedly connected with the main body container (38) is in a V shape; the feed port c (42) is arranged at the top of one side wall of the main container (38), the overflow port (43) is arranged at the top of the other side wall of the main container (38) opposite to the feed port c (42), the separated oil outlet (44) is arranged at the lowest position of the main container (38) corresponding to the guide plate (47), the discharge port c (45) is arranged at one side of the bottom of the main container (38) far away from the feed port c (42), and the conveying direction of the sand driving roller is from the feed port c (42) to the overflow port (43); the main body container (38) is mounted on a support, the support comprises a base (51), an operating platform (52), a support rod (53) and a steel step (54), the support rod (53) is vertically and fixedly connected between the base (51) and the operating platform (52), the steel step (54) is arranged between the base (51) and the operating platform (52), and an operating handrail (55) is arranged on the operating platform (52); the air blowing device (46) comprises a rotary motor (56) and fan blades (57) arranged on the rotating shaft of the rotary motor (56), the rotary motor (56) is vertically and downwards arranged on the top plate of the main body container (38), and the fan blades (57) are positioned right above the central line of the guide plate (47).

5. A method for de-oiling silt in a system for de-oiling harmless silt in oil according to any of claims 1 to 4, which comprises:

s1, adding the medicament a into the preliminarily sorted oily sediment, stirring to be pasty to obtain a material to be processed, feeding the material to be processed into a ball mill (35) through a composite feeding machine (20), and carrying out ball milling for 10-20 min at the temperature of 20-30 ℃ to obtain a pasty raw material; the agent a is formed by mixing alkaline detergent and water; the adding amount of the medicament a is that 10 to 15 parts of alkaline detergent and 1000 to 15000 parts of water are added into 1000 parts of the preliminarily sorted oily sediment;

conveying the pasty raw materials obtained in S2 and S1 into a cyclone heating multi-connected module unit (34), carrying out cyclone heating at the temperature of 45-65 ℃ and the rotating speed of 85-250 r/min, adding a medicament b after the pasty raw materials are heated to a constant temperature, separating primary separated materials with large solid content and much oil stain and preliminarily obtained oil, pumping the primary separated materials into a roller sand driving and disintegrating kettle (60) for subsequent reaction, continuously carrying out cyclone heating on the cyclone heating multi-connected module unit (34), and collecting the preliminarily obtained oil to enter a separated oil storage device (36); the medicament b is formed by mixing alkyl sulfonate, methylene sodium bis (methylnaphthalene) sulfonate, sodium pyrophosphate, polyacrylamide and a penetrating agent JFC-M2; the addition amount of the medicament b is that every 1000 parts of pasty raw materials are added with 5-13 parts of alkyl sulfonate, 3-7 parts of methylene sodium bis-methylnaphthalene sulfonate, 10 parts of sodium pyrophosphate, 2-5 parts of polyacrylamide and 2-7 parts of penetrating agent JFC-M;

the primary separated material obtained in the S3 and S2 enters a roller sand-driving disintegration kettle, when the primary separated material is over a sand-driving roller, a medicament c is added, under the condition that the temperature is 70-80 ℃, the primary separated material is overturned forwards to be pushed and reacts with the medicament c, and oil liquid and silt-like materials in the primary separated material are separated; the medicament c is formed by mixing a raw material flocculating agent and a coating agent; the addition amount of the medicament c is that 5 to 10 parts of flocculating agent and 5 to 6 parts of coating agent are added into every 1000 parts of primary separated material;

when oil is separated out and floats on the uppermost layer of the primary separated material, under the combined action of the guide plate (47) and the oil scraping plate (48), the oil is collected and enters the separated oil storage device (36); when the foam is formed on the surface of the oil liquid, the air flow generated by the air blowing device (46) is started to crack the foam;

and the silt-like materials separated in the S4 and S3 enter a horizontal centrifuge (37) from a roller driving sand disintegration kettle (60), are centrifuged at the rotating speed of 1500 r/min-2800 r/min, mud and sand are discharged from a slag outlet of the horizontal centrifuge (37) after centrifugation, and water discharged after centrifugation enters a water pool (61) to finish deoiling of the oily silt.

6. The method according to claim 5, characterized in that the moisture content of the material to be treated in S1 is 60%.

7. The method of claim 5, wherein the ratio of material balls in the ball milling in S1 is 3: 1.

8. the method of claim 5, wherein the alkaline detergent in S1 is sodium dodecylbenzenesulfonate; the raw material flocculant in S3 is polyacrylamide.

9. The method of claim 5, wherein the total time of the cyclone heating in S2 is 0.5h to 2 h.

10. The method of claim 5, wherein the reaction separation time in S3 is 2-4 h.