GB2088895A - Neutralization and Removal of Acid Sludge from Pits - Google Patents
Neutralization and Removal of Acid Sludge from Pits Download PDFInfo
- Publication number
- GB2088895A GB2088895A GB8135053A GB8135053A GB2088895A GB 2088895 A GB2088895 A GB 2088895A GB 8135053 A GB8135053 A GB 8135053A GB 8135053 A GB8135053 A GB 8135053A GB 2088895 A GB2088895 A GB 2088895A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pump
- working liquid
- jet
- jet pipe
- acid sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 39
- 239000002253 acid Substances 0.000 title claims abstract description 37
- 238000006386 neutralization reaction Methods 0.000 title claims description 8
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 11
- 239000004094 surface-active agent Substances 0.000 claims abstract description 11
- 229910000000 metal hydroxide Inorganic materials 0.000 claims abstract description 7
- -1 Fuller's earth Substances 0.000 claims abstract description 5
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 4
- 239000010440 gypsum Substances 0.000 claims abstract description 4
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 3
- 239000002817 coal dust Substances 0.000 claims abstract description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 3
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 3
- 229910001562 pearlite Inorganic materials 0.000 claims abstract description 3
- 239000003415 peat Substances 0.000 claims abstract description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 34
- 239000000126 substance Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 7
- 150000004692 metal hydroxides Chemical class 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 239000002734 clay mineral Substances 0.000 claims description 2
- 238000007667 floating Methods 0.000 claims description 2
- 239000002440 industrial waste Substances 0.000 claims description 2
- 235000012054 meals Nutrition 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims description 2
- HNNQYHFROJDYHQ-UHFFFAOYSA-N 3-(4-ethylcyclohexyl)propanoic acid 3-(3-ethylcyclopentyl)propanoic acid Chemical compound CCC1CCC(CCC(O)=O)C1.CCC1CCC(CCC(O)=O)CC1 HNNQYHFROJDYHQ-UHFFFAOYSA-N 0.000 claims 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000012216 screening Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 3
- 125000005609 naphthenate group Chemical group 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 239000004927 clay Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 239000010908 plant waste Substances 0.000 abstract 1
- 238000007670 refining Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 8
- 239000010426 asphalt Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007900 aqueous suspension Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000011973 solid acid Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000005608 naphthenic acid group Chemical group 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/32—Materials not provided for elsewhere for absorbing liquids to remove pollution, e.g. oil, gasoline, fat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G17/00—Refining of hydrocarbon oils in the absence of hydrogen, with acids, acid-forming compounds or acid-containing liquids, e.g. acid sludge
- C10G17/02—Refining of hydrocarbon oils in the absence of hydrogen, with acids, acid-forming compounds or acid-containing liquids, e.g. acid sludge with acids or acid-containing liquids, e.g. acid sludge
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G17/00—Refining of hydrocarbon oils in the absence of hydrogen, with acids, acid-forming compounds or acid-containing liquids, e.g. acid sludge
- C10G17/10—Recovery of used refining agents
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/10—Pipelines for conveying excavated materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Public Health (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
Acid sludge 6 (from the refining of oils) in a storage pit 5 is neutralized and removed by injecting a liquid comprising a neutralizing agent, a filler and a surface active agent into the sludge from a jet 4 which is pressurized by a pump 3 and removing the suspension formed by a pump 9. The neutralizing agent can be a metal oxide, hydroxide or carbonate or basic power station ash. The filler can be gypsum, Fuller's earth, clay, pearlite, peat, coal dust or plant waste or can be obtained from the reaction products. The surface active agent can be an alkaline earth metal sulphonate or naphthenate and can be obtained from the reaction products. <IMAGE>
Description
SPECIFICATION
Process and Apparatus for the Neutralization of
Acid Sludge and its Exploitation from Pits
The invention relates to a process and apparatus for the neutralization of acid sludge and its exploitation from the sump.
At the petroleum refining acid sludges of different consistence and composition are formed which are often deposed in pits dug into the ground.
As is well known in the art, the acid sludge contains sulfonates of condensed hydrocarbons of high molecular weight and of heterocyclic compounds, their naphthenates, a lot of sulphuric acid as well as dissolved S03 and SO, gases. Its state varies from viscous-tough to sticky-solid.
The acid sludge stored in pits dug in the ground is strongly contaminating of the environment and takes up valuable industrial area.
Different neutralizing and incorporating processes concerning the elimination and possible utilization of the acid sludge are proposed by British Patent Specification No.
1,127,255, Soviet Patent Specification No.
414,186, West-German Patent Specification No.
2,241,524 and East-German Patent Specification 102,403, respectively. These processes, however, are only suitable for the neutralization and incorporation of freshly formed, viscously pumpable, feedable acid sludge not put into a storage pit yet.
The Meissner-Grundbau process (K6olaj 6s Földgáz 1 980, 7, p. 212) deals with the elimination and utilization of tough-sticky-solid acid sludge congealed in the storage pit. In the course of this process waste-materials are effectively mixed with special reagents containing lime over a large surface and as final product of the physical-chemical reaction is powdery waterrepellent material is obtained. This process demands many instruments and a large area.
Some parts of the apparatus must be protected against the corrosive effect of the acid and the neutralization process demands a large area of work.
Concerning the exploitation of oil sludges stored in pits several processes are known, e.g.
that of USA Patent Specification No. 4,028,240 using a scraper. This process, however, cannot be used at tough-sticky-solid acid sludge because the scraper gets stuck in it.
For the exploitation of sand and sludge from beneath a water layer hydromechanical processes carried out with a suction dredger are generally used. The suction dredgers in general consist of a mechanical splitting head and a sucking pulp pump, but sometimes the effect of the mechanical splitting head is substituted by the kinetic energy of a water jet, e.g. in the case of the Kdrste hydraulic splitting head (see e.g. West
German Patent Specifications No. 2,303,849, 2,433,556, 2,506,870). These apparatuses, however, can only be used for the exploitation of sand and sludge but they are not suitable for the exploitation of sticky-solid material containing a lot of free acid.
The present invention seeks to solve the neutralization and exploitation of viscous, stickysolid acid sludge stored in a pit by using a hydromechanical process which we call "chemical-hydromechanization" process.
This invention is based on the recognition that a jet having sufficient kinetic energy and formed from an aqueous solution containing suspended parts enters the acid sludge layer and reacts chemically with it; the thus broken acid sludge loses its viscous-sticky property beside its determined slurry composition, it becomes breakable and forms a pumpable slurry.
The process is carried out as follows:
An aqueous solution containing suspended parts (this solution is called hereafter working liquid) is prepared which comprises the following components:
~neutralizing substance; filler; and
~surface-active agent.
As neutralizing substance metal hydroxides, a mixture of metal hydroxides and metal oxides or metal hydroxides and metal carbonates, basic power station ash etc. can be used. Among the neutralizing substances at least one substance must possess such a solubility that the working liquid should be basic (pH > 7,8). The concentration of the neutralizing substance is 10--300 Kg/m3, preferably 50-1 50 Kg/m3. As filler gypsum, coal dust, pearlite, Fuller's earth, clay minerals, peat meal, industrial waste grist of plant origin etc. can be used. The upper limit of the particle (grain) size of the filler is about 5 mm, while its concentration is 1-100 kg/m3, preferably 10-20 kg/m3.As surface-active agent an oleophilic surface-active agent is used which links with its polar group on the surface of the filler grains, while its nonpolar group is directed outwards and thus the surface of the grains is made oleophilic, oil-binding. Such surface-active substances are e.g. the basic alkaline earth metal salts of sulfonic acids and the naphthenic acids.
The concentration of the surface-active agent is 0.1-50 kg/m3. If necessary, the working liquid is homogenized by mixing or by circulating with a pump.
The working liquid is jetted from the jet pipe with an outlet velocity of at least 4 m/s and an outlet mass stream of 3 kg/s into the acid sludge layer.
The working liquid enters the acid sludge, reacts chemically with it and thereupon a crater filled with slurry is formed in the acid sludge layer.
The slurry contains in addition to the components of the working liquid the neutralized, broken acid sludge suspension, too.
The neutralizing chemical contents of the working liquid should be determined so that the slurry should always remain basic (pH > 7).
The working liquid-acid sludge suspension formed in the sump is extracted with a suitable pump. This product can be transported, pumped and it contaminates the environment to a considerably lesser extent than the acid sludge.
After dehydration it can be used as a fuel. Since it does not contain acid sludge, but rather its products formed via chemical reaction, it can be considered as a working liquid enriched with a
bitumen suspension.
The water contents of the enriched working
liquid formed in the course of a single circulation of the working liquid is high, it contains relatively few transformed acid sludge (suspended bitumen). Therefore it is possible to circulate the enriched working liquid, to lead it again into a jet pipe and to jet it into the acid sludge layer. Thus the contents of suspended bitumen can be increased. In the course of the circulation of the working liquid and the enriched working liquid, if necessary, breaking, mixing, filtering and precipitating operations can be inserted into the cycle in order to ensure the homogeneity.
The process is more economical if the filler and the surface-active agent are obtained from the acid sludge as a result of reactions taking place with the neutralizing chemical substances.
The total quantity of the chemicals necessary for the working liquid can be added at the beginning of the process or another variant is that a part of this quantity is added at the beginning of the process and the other part continuously or step-by-step in the course of the circulation of the working liquid. These addition variants can be applied in a different way for the individual chemicals.
Some possibilities of the concrete realization of the process are illustrated by the following nonlimiting Examples.
Example 1
10 m3 of a working liquid are prepared in the form of an aqueous suspension with the following composition: 150 kg/m3 of Ca/OH/2 5 kg/m3 of Fuller's earth 1 kg/m3 of Ca-sulfonate 1 m3 of the working liquid is jetted with a pressure of 5 bar and an outlet velocity of the jet of 6 m/s into the acid sludge layer. The suspension formed under the effect of the slurry jet is extracted with a suitable pump and returned to the remaining 9 m3 of the working liquid. This circulation process is repeated until the suspended solid contents of the working liquid reach the concentration of 400 kg/m3. Then the suspended solid matter is removed from the working liquid by precipitation.
The solution can be used for the preparation of a new working liquid.
Example 2
10 m3 of an aqueous Ca/OHI2 suspension is prepared which contains 100--150 Kg/m3 of Ca/OHI2. 9 m3 of the aqueous suspension are jetted into the acid sludge layer with a pressure of 3 bar and an outlet jet velocity of 3 m/s, the suspension formed in the acid sludge layer is extracted with a suitable pump. The composition of the aqueous suspensions:
Ca/OH/2 80-140 kg/m3
Gypsum 10- 60 kg/m3
Ca-sulfonate 2- 30 kg/m3
This suspension is used as working liquid and the exploitation process disclosed in Example 1 is carried out.
A possible form of an apparatus suitable for the realization of the process is shown with reference to Figure 1. Figure 1 demonstrates the technological flow diagram of the chemicalhydro mechanization exploitation.
In container 1 from the chemicals fed from chemical storage equipment 2 and from water the working liquid is prepared and forced into jet pipe 4 by pump 3, the jet of the outlet chemical solution is directed at acid sludge 6 in storage pit 5, whereupon sump 7 is formed in the acid sludge. The basic enriched working liquid in the sump is pumped into container 1 by a vertical slurry pump 9 suspended from bearing construction 8. From container 1 the enriched working liquid is led by pump 3 into jet pipe 4 and this step is carried out until the suspended asphalt bitumen (acid sludge reaction product) concentration of the enriched working liquid reaches the desired value.
The enriched working liquid of the desired concentration is pumped into transport container 10 by pump 3. Pump 9 can also be formed in such a way that besides the slurry transport the suspended parts are broken at the same time, too.
For the reduction in size of the parts not broken yet a mixer can be used and a screen can be placed above or beside container 1 in order to remove these parts. Instead of suspension bearer 8 an aerial rail stressed to a mast, a cable bridge or a pontoon floating on the acid sludge layer or a slide can be used. Pump 9 can be centrifugal pump, an injector pump, a screw pump, rotary gear pump, pulsating pump or a piston pump.
Pump 9 and jet pipe 4 can be mounted on a common bearing construction.
The discharge opening of jet pipe 4 can be at the same height as the suction port of pump 9, below it or above it.
For one pump 9 some jet pipes 4 or for one jet pipe 4 some pumps 9 can be used.
When establishing the built together jet pipe 4 and/or jet pipe 4-pump 9 complex it is expedient to use a constructional solution which can be controlled and moved from a working place which is outside the storage pit.
The advantage of the process is that the neutralization of the acid sludge and its extraction from the storage pit can be carried out in one operation, the asphalt-bitumen suspension prepared from acid sludge can be pumped, it contains volatile and burnable sulfur compounds in a small quantity and can be used as a fuel.
Claims (24)
1. A process for the neutralization of acid sludge and its exploitation from a storage pit via a jet hydro-mechanization process, wherein the jethydromechanical breaking-up is carried out with a working liquid containing a neutralizing substance, filler and surface-active agent and the basic enriched working liquid formed on the effect of the chemical-hydromechanical breaking-up and containing the reaction product of the acid sludge in the form of a suspension is pumped out of the storage pit.
2. A process as claimed in claim 1 wherein the enriched working liquid is circulated as the working liquid of the jet hydromechanical breaking.
3. A process as claimed in claim 1 or 2, wherein the neutralizing substance is a metal hydroxide, a mixture of metal hydroxide and metal oxide, a mixture of metal hydroxide and metal carbonate or basic power station ash, or any operative combination thereof, the solubility of at least one of the components of the neutralizing substances being selected so as to assure that the working liquid is of basic pH.
4. A process as claimed in any preceding claim, wherein the filler is gypsum, Fuller's earth, clay mineral, pearlite, peat meal, coal dust or industrial waste grist of plant origin or any operative combination thereof.
5. A process as claimed in any preceding claim, wherein the surface-active agent is a basic alkaline earth metal salt of sulfonic acid and/or naphthenic acid.
6. A process as claimed in any preceding claims, wherein the working liquid is homogenized by mixing and/or circulating with a pump and/or screening and/or precipitating.
7. A process as claimed in any preceding claim, wherein a neutralizing chemical and/or a filler and/or a surface-active agent is added continuously or step-by-step to the working liquid and/orto the enriched working liquid.
8. A process as claimed in any preceding claim, wherein the filler and/or the surface-active agent components of the working liquid is/are obtained from the products formed as a result of the chemical reaction of the acid sludge with the neutralizing substance(s).
9. A process as claimed in claim 1 substantially as herein described with reference to any one of the Examples.
10. Apparatus for carrying out the process claimed in any of claims 1 to 9, comprising a working liquid container, a first pump operatively connected to feed a jet pipe, a second pump for delivering the enriched working liquid and a suspension mounting for bearing the jet pipe.
1 Apparatus as claimed in claim 10, wherein the second pump is a centrifugal pump and its impeller and scroll are supplied with sawtooth edges for promotion of breaking up.
12. Apparatus as claimed in claim 10 or 11, wherein a mixer and/or standing or vibrating screen is/are fitted between the delivery duct of the second pump and the inlet duct of the container of the enriched working liquid.
13. Apparatus as claimed in any of claims 10 to 12, wherein the jet pipe and the second pump are mounted on a cableway or a suspension bridge or a floating pontoon or a slide.
14. Apparatus as claimed in any of claims 10 to 13, wherein the outlet end of jet pipe is at the same horizontal level as the suction port of second pump.
15. Apparatus as claimed in any of claims 10 to 13, wherein the outlet end of jet pipe is below the suction port of second pump.
16. Apparatus as claimed in any of claims 10 to 13, wherein the outlet end of jet pipe is above the suction port of second pump.
1 7. Apparatus as claimed in any of claims 10 to 1 6, wherein the jet pipe is displaceably supported, the displacement being controllable from outside the area of the storage pit.
18. Apparatus as claimed in any of claims 10 to 1 7, wherein the jet pipe and second pump are mounted on a common bearing construction.
19. Apparatus as claimed in any of claims 10 to 18, wherein there is a plurality of jet pipes and a plurality of second pumps.
20. Apparatus according to claim 19, wherein there are as many jet pipes as second pumps.
21. Apparatus according to claim 19, wherein there is a different number of jet pipes from the number of second pumps.
22. Apparatus as claimed in any of claims 10 to 21 except claim 11, wherein the second pump is a jet pump or a screw pump or a rotary gear pump or a piston pump or a pulsating pump.
23. Apparatus as claimed in claim 10 substantially as herein described with reference to and as shown in the accompanying drawing.
24. Neutralized acid sludge whenever produced by the process claimed in any of claims 1 to 9 or apparatus claimed in any of claims 10 to 23.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU278780A HU180394B (en) | 1980-11-21 | 1980-11-21 | Process and equipment for the neutralization of acid tar and for getting it from conserving tanks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2088895A true GB2088895A (en) | 1982-06-16 |
| GB2088895B GB2088895B (en) | 1984-03-21 |
Family
ID=10961096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8135053A Expired GB2088895B (en) | 1980-11-21 | 1981-11-20 | Neutralization and removal of acid sludge from pits |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT385687B (en) |
| DD (1) | DD207217A1 (en) |
| DE (1) | DE3145471A1 (en) |
| GB (1) | GB2088895B (en) |
| HU (1) | HU180394B (en) |
| NL (1) | NL8105262A (en) |
| YU (1) | YU41527B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2137403A (en) * | 1981-02-17 | 1984-10-03 | United States Gypsum Co | Process for preparing wastes for non-pollutant disposal |
| DE3790211T1 (en) * | 1986-05-02 | 1988-07-14 | ||
| DE3921645A1 (en) * | 1988-10-06 | 1990-04-12 | Edelhoff Staedtereinigung | Disposal esp. of mixed inorganic waste |
| EA015746B1 (en) * | 2010-10-08 | 2011-10-31 | Евгений Вадимович Нейенбург | Method for processing water-based drilling fluid and/or sludge formed therefrom |
| EP2703363A1 (en) * | 2005-06-24 | 2014-03-05 | UPM-Kymmene Corporation | Use of ash as an alternative alkalising agent |
| USD1022014S1 (en) * | 2022-11-26 | 2024-04-09 | Zhipeng Zhao | Glasses |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4438271C1 (en) * | 1994-10-26 | 1996-08-29 | Omros Ges Fuer Umwelttechnik G | Recovery highly viscous products contg. hydrocarbon(s) from e.g. mines |
| DE4438269C2 (en) * | 1994-10-26 | 1998-07-23 | Omros Ges Fuer Umwelttechnik G | Process for the recovery of highly viscous products |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1127255A (en) * | 1965-07-30 | 1968-09-18 | Brunel Henri | Process for converting acid sludges to useful products |
| DE2241524A1 (en) * | 1972-08-24 | 1974-03-21 | Nukem Gmbh | Disposal of acid resins - by mixing with milk of lime and binder |
| DD102403A1 (en) * | 1972-12-12 | 1973-12-12 | ||
| US4028240A (en) * | 1973-10-15 | 1977-06-07 | Manchak Frank | Method and apparatus for treating sumps |
-
1980
- 1980-11-21 HU HU278780A patent/HU180394B/en not_active IP Right Cessation
-
1981
- 1981-11-16 DE DE19813145471 patent/DE3145471A1/en not_active Withdrawn
- 1981-11-18 YU YU272581A patent/YU41527B/en unknown
- 1981-11-19 AT AT497981A patent/AT385687B/en not_active IP Right Cessation
- 1981-11-20 GB GB8135053A patent/GB2088895B/en not_active Expired
- 1981-11-20 DD DD23501681A patent/DD207217A1/en unknown
- 1981-11-20 NL NL8105262A patent/NL8105262A/en not_active Application Discontinuation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2137403A (en) * | 1981-02-17 | 1984-10-03 | United States Gypsum Co | Process for preparing wastes for non-pollutant disposal |
| DE3790211T1 (en) * | 1986-05-02 | 1988-07-14 | ||
| DE3921645A1 (en) * | 1988-10-06 | 1990-04-12 | Edelhoff Staedtereinigung | Disposal esp. of mixed inorganic waste |
| EP2703363A1 (en) * | 2005-06-24 | 2014-03-05 | UPM-Kymmene Corporation | Use of ash as an alternative alkalising agent |
| EA015746B1 (en) * | 2010-10-08 | 2011-10-31 | Евгений Вадимович Нейенбург | Method for processing water-based drilling fluid and/or sludge formed therefrom |
| USD1022014S1 (en) * | 2022-11-26 | 2024-04-09 | Zhipeng Zhao | Glasses |
Also Published As
| Publication number | Publication date |
|---|---|
| YU272581A (en) | 1983-12-31 |
| AT385687B (en) | 1988-05-10 |
| HU180394B (en) | 1983-02-28 |
| ATA497981A (en) | 1987-10-15 |
| GB2088895B (en) | 1984-03-21 |
| DD207217A1 (en) | 1984-02-22 |
| DE3145471A1 (en) | 1982-06-24 |
| NL8105262A (en) | 1982-06-16 |
| YU41527B (en) | 1987-08-31 |
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| PCNP | Patent ceased through non-payment of renewal fee |