TW200417520A - Treatment process for fast liquefaction and effective recycling of oil-containing sludge - Google Patents

Abstract

A kind of treatment process for fast liquefaction and effective recycling of oil-containing sludge can perform preliminary liquefaction on oil containing sludge which may also contain various impurities by a sieving filtration apparatus installed with steam or other heat source and at the same time sieve out the impurities. The preliminarily liquefied oily sludge is agitated to maintain its liquefied state, which is followed by adding de-emulsification agent, dilution oil, etc. and homogeneously agitating to perform de-emulsification process so that fine solid materials and oil can be further separated from water to effectively recycle oil containing sludge waste, in which the addition of the dilution oil and heating can liquefy solid or semi-solid oily sludge to improve the fluidity. However, the oil, water and fine solid materials in the liquefied oil containing sludge still stay in a stable emulsified state. The effective components of the de-emulsification agent are wetting agent and emulsion breaker, in which the wetting agent can moisten the surface of the fine solid materials for entering the water phase and the emulsion breaker is adsorbed at the oil water interface, which eliminates the emulsification effect, promotes coagulation of small water drops into large water drops and thus accelerates oil water separation. Therefore, the purpose of separation of three phases (fine solid material, oil and water) is achieved.

Description

200417520 V. Description of the invention (1) [Field of the invention] The present invention is a fast liquefaction and effective resource treatment program for oil sludge. It is mainly an oily sludge that may contain various impurities. The sieve filtering equipment of the heat source performs preliminary liquefaction, and at the same time removes each 2 debris. After the initial liquefaction of the sludge, it is still heated and stirred to continue to maintain the state of sorrow, and then add demulsifiers, diluted oil and other substances, and evenly stir for demulsification to further accelerate the oil-water separation. Finally, the three-phase separation of fine solids, oil and water is achieved. / [Previous technology] Oily sludge has different components due to different sources, but it is mainly a mixture of oil, water and solids. The solids are mainly corrosion products of mud and sand, iron oxide and iron sulfide, or other substances such as asphalt, paraffin and coke. Most of the emulsified products, the core substance of which is metal oxide or sand, "the surface is wetted with water, and the polar compounds are adsorbed on the solid surface," resulting in the formation of micelles (mice 1 1 e), The hydrophobic part reabsorbs the hydrocarbons of the long-chain paraffin family, thus forming a stable emulsified state. Such wastes are often classified as hazardous business wastes by environmental protection authorities. How to dispose of them cost-effectively has been a problem for related industries such as refining, petrochemicals, and chemical manufacturing for many years. The current conventional technologies for oily sludge treatment can be divided into three categories as follows: (a) pre-reduction treatment (such as direct pressure filtration, heat treatment, etc.); Fuel, stele, etc.) (3) End-of-pipe treatment (such as high temperature wet oxidation, incineration, landfill, etc.). The difficulties encountered in the application of various conventional technical methods are as follows:

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(1) F i Iter press Direct pressure filtration to reduce mass production and use of auxiliaries (diatomaceous earth and lime). In oil sludge, the filter oil and water automatic layering process filter cloth is easy to block, and it costs too much artificial solids to clean up. Increase the incineration place (2) to solidify or stabilize it ^ Overlay in Dubu and add a little to moxibustion 7 to effectively recover the oil. After operation, and the filter aid is added, the filter cake is under load.

The Urrichem process is a sequence. It has been used in a mixture of oil sludge conditioners in refineries. At the same time, the curing agent contains cement and Porsolan (including organic stabilizers. The curing process can meet the requirements. However, the curing method will be increased and increased The trouble of the final disposal. The metal or oil may still ooze out. A commercialization process of solidification method is applied. This method uses organic and inorganic solvents to remove heavy metals and grease from the mud. Solid f ash , Cement kiln ash and slag burner slag) The uniaxial compressive strength and permeability coefficient of the mouth will greatly increase the amount of waste after treatment and if it is buried, it will be solidified.

The ChemFix process is a commercialized process that uses stabilization to stabilize the waste sludge by using Microencapsulation (microcell coating). The finished product is soil-like without being formed by a mold, and can be used as a burial% covering soil. This method is applicable to sludge containing heavy metals or low oil content. It is not applicable to sludge with high oil content. After the oily sludge with an oil content of more than 30% is stabilized, a large amount of oily sludge can still be extracted and there is a possibility of secondary pollution. (3) Solvent extraction method The B.E.S.T. method of RCC (Resource Conservation Corp.), which has been commercialized, uses the speciality of triethylamine (TEA)

Page 8 200417520 V. Description of the invention (3) At low temperature, the polarity of TEA is high and it is miscible with water, and at high temperature, the polarity of TEA is low and it is miscible with oil and fat. Waste oil sludge is extracted by low-temperature TEA (4 ° C). After removing solids, the mixture of sludge and TEA is treated at 54 ° C to remove water from the oil and water phases. Finally, TEA is recovered by steam stripping and reused. . However, the main consideration of San Yilian makes this method difficult to popularize. One by one t (4) Land farming—The soil contains various micro-organisms that have the ability to decompose hydrocarbons. However, in practice, due to the slow biological decomposition rate, the required land area if ί: can pollute groundwater, so It is not suitable for narrow and dense areas, and it is not suitable for cold or dry areas. 'Because of the microbial activity in the soil (5) Blended petroleum coke waste sludge Blended petroleum coke is the United States i 1 male Mobil sludge cUng ( M0SC) 〇 ^ # ^ t; i ^ ^ is: (a) Heterogeneous sludge feed, causing petroleum 隹 === Asking for difficulty; ⑻The oil content in the sludge is too high, yield; , Produces a large amount of oily wastewater. (6) incineration treatment Because of the high water content of oily waste, large-scale fluid factories consider using incineration treatment to cope with the day-to-day —... value, refinery f refinery currently The incineration method is also used to treat sludge m environmental protection laws and regulations. The goal of non-chemical treatment, but the equipment can be processed without any high level. The use and disposal costs of Beja are extremely high. (7) Mud-burning resource 200417520 4) Blend high-calorie waste sludge with Taiwanese dielectric ash and fly ash, and add appropriate dispersant to make a finished product called mud-burning agent, which has a calorific value up to 50000 K ca 1 / K g, It can be used as auxiliary fuel for cement plants. This method is widely used in Japan and the United States, and it is not easy to be promoted because of incomplete related laws in China. (8) Heating and centrifugation method 'Commercial examples of combining oil tank cleaning and sludge treatment in foreign countries After processing by heating (70 ~ 95 ° C), the solid matter, water and oil are separated by a continuous three-phase centrifuge. Collect foreign relevant information. At least five manufacturers have this program, including the United States 31 and British TPS. (SEPS), Swedish Mfa, French Guinar d Oil and Australian VAC-TECH (SLT), etc. All the above-mentioned conventional technologies for the sludge resource recovery method may cause the feed to be blocked and set due to the sludge content, impurities such as rubber substitutes, gloves, screws, iron parts, etc. "Bad" reduces its processing capacity. The method for implementing the rapid liquefaction and resource efficient treatment of oily sludge of the present invention is to remove large solids and ferrous metals first, and to add diluent oil and demulsifier: oil separation. Effectively recover and recover the Chinese version of Liu Shuixing ,,,,,,, ^ ^ The scourge compound in the middle eight is pumped back to the crude oil tank or back, and the oil tank is simmered again, and the remaining solid residue is incinerated. [Content of the invention] should be 3 = : Quick liquefaction of mud and effective resource processing procedures, the main quot!: &Quot; b 3! Oil sludge of miscellaneous materials, #from the installed steam pipe 绫 1 /, dagger ", the source of the filter equipment, preliminary Liquefaction, and screen all kinds of debris at the same time. After preliminary liquefaction ,, mountain, and corpse + #, combined type ^ η ^ ^ / ratio, Trang Luo to the heating and stirring tank, continue to maintain the liquefaction state and add solutions Emulsifying sword silk, Temple line demulsifying effect, 行: I dilution specialist Quality, uniform stirring Shaw V into the fine solids, oil and water separation, has caused Page 10200417520

Recycling wastes containing oily sludge. The addition of diluent oil and heating can liquefy solid or semi-solid oil and corpse, and improve its fluidity. However, the oily sludge after liquefaction, the oil / nedra, and the fine solids contained in it remained in a stable emulsified state. The effective wounds for demulsification are wetting agents (W e 11 i n g a g e n t) and demulsifiers (Emulsion breaker). The wetting agent can make the surface of the fine solids wet into the water phase, and the demulsifier will be adsorbed at the oil-water interface, eliminating the original emulsification, and promoting the condensation of small water droplets to form large water droplets.

Water separation. Finally, three-phase separation of fine solids, oil and water is achieved. [Embodiment] J

Please refer to FIG. 1A for a schematic view of a sieve filter tank of a processing flow of an embodiment of the present invention. The description is as follows: · When treating oily sludge, if it is pumpable and sludge, that is, if its large solid content is small and the fluidity is good, then Philips will directly pump oily sludge into 10 Sieve filter trough u. Which belongs to the large solid shape 1 pour into the filter tank 1 A. The top of the sieve filter tank 1A is trapped by a grid, such as stones, iron bars, plastic sludge 12 and floats 13, and the sludge 10 flows downward through the mesh of other heating equipment to prevent feeding. Stir heating tank 1 B, please refer to the steam line in the first stirring heating tank 1 B to adjust the temperature. After proper heating and plate 14, larger solids 丨 丨 quilts, bottles, easy to open cans, etc., screened and installed with steam line heating device 1 2 5 hanging, this preheating effect has increased Features. Sludge 1 2 hangs down and stirs. Figure B is a schematic diagram of the heating process. The heating device 1 2 5 is added with a temperature control system. Decomposer 1 2 1 is used as a demulsifier.

200417520 V. Description of the invention (6) Agent and diluent oil, so that the heating mud oil in the emulsified state 丨 2 The solid, oil and water mixture in 3 3 can de-emulsify and effectively delaminate. Please refer to the first diagram C for the solid-liquid separation diagram of the treatment process of the embodiment of the present invention. The present invention enables effective separation of slick oil 131 and water-phase substance 133 / spot 7-state impurity 135, of which the water-phase substance 133 is introduced into the wastewater treatment system The solid impurities 1 3 5 enter the incinerator. The second figure is a top view of a hardware device according to an embodiment of the present invention. The tank body is divided into three parts, namely the feeding part, the stirring tank part and the leveling tank part. The material part is the grid plate 26 on the upper part of the tank and the steam line adding device. 25 The feed cover is provided on the outside of the body. The cover is provided with a flange type short pipe joint for feeding sludge. The main advantages of this processing system are: (1) The design of the upper grid plate 26 can remove the torture and subsequent operations. Remove large solids to avoid affecting (2) Πΐ: The steam line heating device 125 of the grid plate 26 can preheat the material resistance and increase its flow rate. Handle bottlenecks. (3) The degree control system adjusts the steam flow to achieve accurate temperature control. (4) The special mixing unit 23 is designed, such as a sawtooth (coffee mixer) ^ ^ interdental ^ The second is a disc shape. Ϊ 座. The purpose is to form a turbulent flow near the blade end, causing and every a and: force. A baffle plate is set inside to enhance the stirring effect. The σ mixing unit 23 can adjust the rotation speed according to actual needs.

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V. Description of the invention (7) (5) Application of the demulsifier in the decomposition agent 121, the demulsifier has the key to the cleaning effect of sludge 12, dehydration ability, the thickness of the oil-water emulsified interface layer, and the wet removal of solid impurities Roles. The self-developed de-emulsifier formulation of the present invention has a strong de-emulsifying function and further strengthens the operating efficiency of the system. Ito

Due to the excellent features of the rapid liquefaction of the oily sludge of the present invention and the effective resource treatment process, the oily sludge containing a large amount of uneven solids or viscosities up to 8 0 0 0 CPS at room temperature is effectively treated, completely solving this type of problem. Disposal of solid waste is troublesome. In order to describe the present invention in detail, the "rapid liquefaction and effective treatment of oily sludge" is an example of the "treatment effect of oily sludge 10". Examples of the present invention are listed below.

The first embodiment of the present invention: Treatment of pumpable oily sludge. The operating conditions are 85 ° c, feed sludge / diluent oil = 1/2, demulsifier addition = 3 ^ 00m, g / L. 2. Stirring speed is 2000 rpm. Under these operating conditions, continuous operation of control units such as temperature, agitation, and addition of demulsifiers over 'j years or more' is good. And the quality of the recovered oil is good. The test results are shown in Table 1. The results of the operation of pumpable sludge using the si: physical treatment. The BS (Bottom I) shed is the solid content in the feed or the recovered oil. BS & W is sludge and) in the feed, or the amount of solid and water phase recovered after treatment. As can be seen from Table 1, the processing procedure of the present invention can reduce the 3 in the feed from 15% to 2%, and the quality of the recovered oil is much better than that of the centrifugal treatment. The BS content in the recovered oil is 5%. Second embodiment of the invention ·· Treatment of non-pumpable oily sludge

200417520

Then, the oil sludge is packed in a 53-gallon drum by manual excavation, and it is fed into the tank. Because the feed sludge has a lot of solids (content I / Λ ', high viscosity, it is poured on the grid plate of the feed tank, and it is not easy to immediately ΛΛ: == drop out of the tank, the feed rate is slow. In the feed sludge Contains quite a lot of your ng ▲ 丄 can be effectively trapped on the upper grid plate. Other operating conditions are the same as those in the “Performance Example.” The operating results are shown in Table 2. From the results of the operation of using the present invention to treat non-pumpable oily sludge in Table 1, it can be known that the solid content (Bs) in the feed is 45%.

After the system's BS is reduced to about 6%, the quality of the recovered oil after processing can be determined. The BS is less than 6%. According to the operation case, it shows the fast liquefaction and effective resource treatment procedures of the oily sludge of the present invention. The special design adopted by its mixing unit 23 is the upper and lower double ore tooth type agitator, and the baffle wall design baffle , Can generate appropriate shear stress and pumping capacity, to achieve rapid liquefaction and uniform mixing of sludge. In addition, the design of the related heating system can raise the oily sludge from room temperature to about 8 5 ° C in 20 minutes, showing that its heat transfer efficiency is excellent. [Effect of the invention]

In summary, the present invention is "fully demonstrated by the present invention" "the procedure for the rapid liquefaction of oily sludge and effective resource treatment", which is deeply implemented in terms of purpose and efficacy, has great industrial use value, and is currently on the market New inventions that have not been seen before are in full compliance with the requirements of invention patents, and applications are filed according to law. The above are only the preferred embodiments of the present invention, and it should not be used to limit the scope of the present invention. That is, where Fan

Page 14 200417520 V. Description of the invention (9) Equal changes and modifications made within the scope of the invention shall still fall within the scope of the patent of the present invention. I invite your reviewing committee to make a clear reference and pray for it. 15 pages 200417520 The diagram is briefly explained. The first diagram A is a schematic diagram of the sieve filter tank of the process of the embodiment of the present invention. The first diagram B is the schematic diagram of the heating process of the process of the embodiment of the present invention. Schematic diagram of solid-liquid separation of the processing flow of the embodiment of the invention; The second figure is a top view of the hardware equipment of the embodiment of the invention; Table 1 is the operation result of using the present invention to treat pumpable sludge; Table 2 is the use of the present invention Operation results of non-pumpable oily sludge. [Symbol description] 1A sieve filter tank; 1B stirring and heating tank; 10 oily sludge; 11 large solids; 1 2 sludge; 1 3 floats; 1 4 grid plate; Heating mud oil; 125 steam pipeline heating device; 127 oil outlet; 1 3 1 oil slick; 1 3 3 water phase substance; 1 3 5 solid impurities; 23 mixing unit;

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Claims (1)

200417520 VI. Scope of patent application 1. A method for designing oil-containing hardware, conveying, adding, stirring, and mixing the mud with the demulsified and demulsified, demulsified, recovered and floated. 2. If you apply for special resources equipment, borrow 3 · If you apply for the heating temperature of the pipeline in the special resource department. The sludge liquefies quickly and has a cautious, Chinese & double shellfish source treatment process, which is carried out by transporting an oily sludge to a batch | purification in a stirred heating tank, the steps are as follows: oily sludge to the Stirring heating tank; Demulsifier to the stirring heating tank; 3 oil sludge, uniformly stir the oily soiling agent by a mixing unit; treatment, the agent's procedure for containing oil slicks and oil and water conservancy range is determined by the screening range珲 A program device, by which the demulsifier is uniformly mixed with the oil-containing sludge # The oil sludge is subjected to de-emulsification to separate the solid water; 'Complete the purification treatment of 4 oil-containing sludge. The oily sludge described in item 1 is fast liquefied and effective, wherein the stirring heating tank is further provided with a sieve filtering device to remove large debris in the oily sludge. The oily sludge described in item 1 is fast liquefied and effective, wherein the agitated heating tank is further provided with a steam and the temperature control system is adjusted by the heating pipeline. In the process of liquefaction and effective resource treatment, the screening equipment is a grid plate. 5 · According to the procedure of rapid liquefaction and effective resource treatment of oily sludge as described in item 2 of the scope of patent application, a feeding cover plate is provided outside the mixing heating tank, Page 17 200417520 The feeding cover is provided with a flange-type short pipe joint. 6 · The oily sequence as described in item 1 of the scope of patent application, wherein the decomposing agent comprises a purification process of decomposition. 7. The backing and a diluent oil as described in item 1 of the scope of patent application. Servant searches for Zuo Ganshidou & 'Ke' Ni's rapid liquefaction and effective shellization treatment, in which the addition of the demulsifier 0-5000mg / L. A 8 .: The procedure for rapid liquefaction and effective shellization of oily sludge as described in item ^ of the scope of patent application. The operating temperature of the present invention is 2 0 ~ 5 0 t. 9. The rapid liquefaction of oily sludge as described in item 1 of the scope of patent application and effective resource treatment procedures, wherein the stirring speed of the present invention is 50 to 100 rpm 〇I 0. The oily content as described in item 7 of the scope of patent application In the process of rapid liquefaction of sludge and effective recycling, the components of the demulsifier include Nonylphenol Formaldehyde Resin, Polyalkoxylate Glycol, and Pluronic Polyalkoxylate Block Copolymer. ), Dioctyl Sulfonsuccinate, Alkyl Sulfonate, Petroleum Sulfonate. II · In the process of rapid liquefaction and effective resourceization of oily sludge as described in item 3 of the scope of the patent application, the steam line heating device set on the stirring heating tank, and the oily sludge is heated by the steam line heating device. Heat up to improve its fluidity. 1 2 · In the process of rapid liquefaction of oily sludge and effective resource recycling as described in item 11 of the scope of patent application, the steam pipeline heating device is more Page 18 200417520 6. Scope of patent application Around the mixing and heating tank «I_lil Page 19