ES2230991B1 - PROCEDURE AND PLANT OF MUD TREATMENT FROM THE STEEL INDUSTRY. - Google Patents
PROCEDURE AND PLANT OF MUD TREATMENT FROM THE STEEL INDUSTRY.Info
- Publication number
- ES2230991B1 ES2230991B1 ES200300990A ES200300990A ES2230991B1 ES 2230991 B1 ES2230991 B1 ES 2230991B1 ES 200300990 A ES200300990 A ES 200300990A ES 200300990 A ES200300990 A ES 200300990A ES 2230991 B1 ES2230991 B1 ES 2230991B1
- Authority
- ES
- Spain
- Prior art keywords
- tubular installation
- steel industry
- vapors
- sludge treatment
- compounds
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 34
- 239000010802 sludge Substances 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 150000001875 compounds Chemical class 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 150000002736 metal compounds Chemical class 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000012808 vapor phase Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 150000002484 inorganic compounds Chemical class 0.000 claims description 2
- 229910010272 inorganic material Inorganic materials 0.000 claims description 2
- 239000000567 combustion gas Substances 0.000 claims 1
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003925 fat Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001033 granulometry Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000009785 tube rolling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
- F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
- F26B17/205—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined with multiple chambers, e.g. troughs, in superimposed arrangement
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Treatment Of Sludge (AREA)
Abstract
Procedimiento y planta de tratamiento de lodos procedentes de la industria siderúrgica, caracterizado porque en una instalación tubular cerrada y aislada térmicamente se vierte en su entrada un lodo cuyos componentes básicos son agua, compuestos de cadena orgánica y compuestos inorgánicos metálicos; se procede al transporte y calentamiento a unos 300º C del lodo a lo largo de la instalación tubular; se extraen los vapores que se producen en el interior de la instalación tubular; y se enfrían dichos vapores a una temperatura de enfriamiento (t2) entre 100º C y 200º C de modo que por condensación se separen los compuestos de cadena orgánica del resto de los vapores extrayéndose secos los compuestos inorgánicos metálicos por la salida inferior de la instalación tubular. De aplicación en la industria metalúrgica.Procedure and sludge treatment plant from the steel industry, characterized in that in a closed and thermally insulated tubular installation, a sludge whose basic components are water, organic chain compounds and inorganic metal compounds is poured into its entrance; the mud is transported and heated at about 300º C along the tubular installation; the vapors that are produced inside the tubular installation are extracted; and said vapors are cooled to a cooling temperature (t2) between 100 ° C and 200 ° C so that by condensation the organic chain compounds are separated from the rest of the vapors, the inorganic metal compounds being dried by the lower outlet of the tubular installation . Of application in the metallurgical industry.
Description
Procedimiento y planta de tratamiento de lodos procedentes de la industria siderúrgica.Procedure and sludge treatment plant coming from the steel industry.
Dentro de la industria siderúrgica cabe destacar las mejoras obtenidas en los procesos productivos, con aumento sensible de los rendimientos, reducción de desviaciones y rechazos, etc., lo que contribuye a optimizar la producción y reducir los impactos medioambientales.Within the steel industry, it is worth mentioning the improvements obtained in the productive processes, with increase sensitive yields, reduction of deviations and rejections, etc., which helps to optimize production and reduce environmental impacts
Se tiende a que la industria siderúrgica obtenga el objetivo "cero residuos". Para ello se produce un masivo reciclaje interno de los subproductos obtenidos, previa su preparación en caso necesario. Tal es el vaso de los residuos de la cascarilla de laminación y acería que presentan un problema medioambiental.The steel industry tends to get the objective "zero waste". For this there is a massive internal recycling of the by-products obtained, prior to Preparation if necessary. Such is the vessel of waste from the rolling mill and steel mill presenting a problem environmental.
Procedimiento y planta del invento se desarrollan con el objetivo principal de ofrecer, a manera de solución a este problema medioambiental, una alternativa de tratamiento y valorización de la cascarilla generada, por ejemplo tras el proceso de laminación de tubos sin soldadura en la industria siderúrgica, cuyo fin sea la generación de un producto útil en la empresa -materia prima- y conseguir que el resto del residuo sea también reutilizable.Procedure and plant of the invention are developed with the main objective of offering, as a solution to this environmental problem, an alternative treatment and recovery of the scale generated, for example after the process of rolling of seamless pipes in the steel industry, whose purpose is the generation of a useful product in the company -material raw- and get the rest of the residue is also reusable
Hay que tener en cuenta que una planta normal de acería/laminación de tubos puede originar lodos en una cantidad superior a las 2.500 Tn/año.Keep in mind that a normal plant of steel mill / tube rolling can cause sludge in an amount exceeding 2,500 tons / year.
Los lodos de la industria siderúrgica suelen estar constituidos fundamentalmente por agua, materia orgánica, aceites y grasas junto con materiales metálicos tales como compuestos de calcio, magnesio, aluminio, manganeso, etc., y grandes cantidades de hierro.The sludge of the steel industry usually be constituted mainly by water, organic matter, oils and fats together with metallic materials such as Calcium, magnesium, aluminum, manganese, etc., and large compounds amounts of iron
Actualmente estos lodos se mezclan con cal y retiran a una escombrera.Currently these sludges are mixed with lime and They remove a dump.
Con el procedimiento/instalación objeto del invento se separan en tres vías diferentes:With the procedure / installation object of invention are separated in three different ways:
a) los aceites/grasas y materia orgánica reutilizables (productos de cadena orgánica)a) oils / fats and organic matter reusable (organic chain products)
b) los materiales metálicos con el hierro como compuesto principal que también son reutilizables, yb) metallic materials with iron as main compound that are also reusable, and
c) el agua que, por ejemplo, como vapor puede salir a la atmósfera.c) water that, for example, as steam can Get into the atmosphere.
En concreto, el procedimiento de tratamiento de lodos procedentes de la industria siderúrgica, objeto del presente invento, se caracteriza porque:Specifically, the treatment procedure of sludge from the steel industry, object of the present invention, is characterized because:
a) en una instalación tubular cerrada y aislada térmicamente se vierte en su entrada un lodo cuyos componentes básicos son agua, compuestos de cadena orgánica y compuestos inorgánicos metálicos;a) in a closed and insulated tubular installation thermally a mud whose components are poured into its entrance Basic are water, organic chain compounds and compounds inorganic metal;
b) se procede al transporte del lodo a lo largo de la instalación tubular mientras queb) the mud is transported along of the tubular installation while
c) se calienta el aire del interior de la instalación tubular a una temperatura entre 200ºC y 400ºC (200ºC \leq t1 \leq 400ºC);c) the air inside the tubular installation at a temperature between 200ºC and 400ºC (200ºC ≤ t1 ≤ 400 ° C);
d) se extraen los vapores que se producen en el interior de la instalación tubular; yd) the vapors that are produced in the inside the tubular installation; Y
e) se enfrían dichos vapores a una temperatura de enfriamiento entre 100ºC y 200ºC de modo quee) said vapors are cooled to a temperature of cooling between 100 ° C and 200 ° C so that
f) se condensen los compuestos de cadena orgánica separándose del resto de los vapores que siguen en fase vapor;f) the organic chain compounds are condensed separating from the rest of the vapors that are still in the vapor phase;
g) se extraen secos los compuestos inorgánicos metálicos de la salida de la instalación tubular.g) inorganic compounds are extracted dry metallic of the outlet of the tubular installation.
Para comprender mejor el objeto de la presente invención, se representa en los planos una forma preferente de realización práctica, susceptible de cambios accesorios que no desvirtúen su fundamento.To better understand the purpose of this invention, a preferred form of practical realization, susceptible to accessory changes that do not distort its foundation.
La figura 1 es un diagrama de bloques del procedimiento objeto del invento.Figure 1 is a block diagram of the procedure object of the invention.
La figura 2 es una vista esquemática en alzado de una realización práctica de la instalación tubular objeto del invento.Figure 2 is a schematic elevation view of a practical embodiment of the tubular installation object of the invention.
La figura 3 es una vista lateral en corte de la figura 2.Figure 3 is a sectional side view of the figure 2.
Se describe a continuación un ejemplo de realización práctica, no limitativa, del presente invento.An example of practical, non-limiting embodiment of the present invention.
De una instalación siderúrgica, por ejemplo una laminación, provienen los lodos (1) cuya composición, por ejemplo, puede ser de un 20% de agua, que una vez evaporada deja un residuo líquido/sólido de 20% materia orgánica, 20% aceites/grasas, 50% de hierro y sus óxidos y el resto de otros compuestos metálicos, es decir, un 40% de compuestos de la química orgánica y un 60% de compuestos de la química inorgánica.Of a steel installation, for example a lamination, the sludge (1) comes whose composition, for example, it can be 20% water, which once evaporated leaves a residue liquid / solid of 20% organic matter, 20% oils / fats, 50% of iron and its oxides and the rest of other metal compounds, is say, 40% of organic chemistry compounds and 60% of Inorganic chemistry compounds.
Los lodos (1) se pueden llevar a un depósito/contenedor (2) y allí se vierten a una dosificadora (4) dispuesta superiormente en una instalación tubular (3).The sludge (1) can be carried to a tank / container (2) and there are poured into a dispenser (4) arranged superiorly in a tubular installation (3).
En esta realización, la instalación tubular (3) consta de tres columnas de cinco pisos de tubos (5) aislados térmicamente.In this embodiment, the tubular installation (3) It consists of three columns of five floors of pipes (5) isolated thermally
Cada columna puede ser independiente respecto de las otras. Los tubos (5) de cada columna forman un todo en continuidad y estanco. Los tubos (5) tienen un conducto (6) de comunicación de cada piso respecto al inmediato superior/inferior.Each column can be independent from the others. The tubes (5) of each column form a whole in continuity and tightness. The tubes (5) have a conduit (6) of communication of each floor regarding the immediate upper lower.
En el interior de cada tubo (5) se dispone una canaleta (7) preferentemente en "U" y separada de las paredes del tubo (5) para permitir el paso de los gases de calentamiento, que es explicarán.Inside each tube (5) a gutter (7) preferably in "U" and separated from the walls of the tube (5) to allow the passage of the heating gases, That is explained.
En la canaleta (7) se dispone un sinfín (8) que accionado por un motor (10) transporte el lodo (1) por el interior de los tubos (5) de la instalación tubular (3). Se disponen de medios convencionales para variar la velocidad del sinfín (8) dependiendo del tipo de lodos (1).In the gutter (7) there are endless (8) that driven by a motor (10) transport the mud (1) inside of the tubes (5) of the tubular installation (3). They have conventional means to vary the speed of the auger (8) depending on the type of sludge (1).
Se dispone un quemador (9) por ejemplo de gas, que con el correspondiente ventilador impulsa los gases de combustión (g) fundamentalmente (CO_{2}) y (H_{2}O) al interior de los tubos (5) de la instalación tubular (3) y actuando, en este caso, unas veces a favor y otras a contra-corriente del sentido del transporte del lodo (1) en los tubos (5) pero con preferencia a contracorriente.A burner (9) is provided for example of gas, which with the corresponding fan drives the gases of combustion (g) mainly (CO2) and (H2O) inside of the tubes (5) of the tubular installation (3) and acting, in this case, sometimes in favor and sometimes against the tide of the direction of transport of the sludge (1) in the tubes (5) but with Precurrent preference.
Se disponen de modo convencional sensores de temperatura y medios de control del quemador (9) para que la temperatura (t_{1}) de los gases de combustión en el interior de los tubos (5) está entre 200ºC y 400ºC : 200ºC \leq t_{1} \leq 400ºC y con preferencia en situación de régimen entre 300ºC y 400ºC : 300ºC \leq t_{1} \leq 400ºC.Conventional sensors are conventionally available temperature and burner control means (9) so that the temperature (t_ {{}}) of the flue gases inside the tubes (5) is between 200 ° C and 400 ° C: 200 ° C ≤ t 1 {le} 400ºC and preferably in regime conditions between 300ºC and 400ºC : 300 ° C ≤ t 1 ≤ 400 ° C.
Debido a dicha temperatura (t_{1}), los lodos (1) van perdiendo en su camino los compuestos vaporizables, es decir: el agua y los compuestos de cadena orgánica (materia orgánica + aceites/grasas) que al convertirse en vapor (11) se extraen de los tubos (5) por un conducto (12).Due to this temperature (t_ {{}}), the sludge (1) the vaporizable compounds are losing their way, it is say: water and organic chain compounds (matter organic + oils / fats) that when converted into steam (11) removed from the tubes (5) through a conduit (12).
El recorrido de los lodos (1) en el interior de los tubos (5) y en contacto con los gases de combustión (g) está aproximadamente entre 15 y 20 metros, al cabo de los cuales los lodos (1) quedan secos.The sludge path (1) inside the pipes (5) and in contact with the flue gases (g) are approximately between 15 and 20 meters, after which sludge (1) remain dry.
En este caso, con una instalación de cinco pisos, el gas de combustión (g) entra en los tubos (5) de los pisos 2º, 3º y 4º que con una longitud de tubo de aproximadamente 5 metros se alcanzan 15 metros de recorrido.In this case, with a five-story installation, the flue gas (g) enters the pipes (5) of the 2nd, 3rd floors and 4th that with a tube length of approximately 5 meters They reach 15 meters of travel.
Se procede a enfriar (e) estos vapores (11) a una temperatura de enfriamiento (t2) inferior a la temperatura de condensación (tc) de los compuestos de cadena orgánica, siendo tc \cong 200ºC, con lo que se condensan los vapores de cadena orgánica (13) que pueden retornar al contenedor (2) inicial o a otro para su reutilización.Cooling (e) these vapors (11) to a cooling temperature (t2) lower than the temperature of condensation (tc) of the organic chain compounds, tc being con 200 ° C, thereby condensing the chain vapors organic (13) that can return to the initial container (2) or to another For reuse.
La temperatura de enfriamiento (t_{2}) debe de ser superior a la temperatura de condensación del agua que es 100ºC para que el agua no se condense y pueda conducirse como vapor (14) donde se desee.The cooling temperature (t2) must be be higher than the condensation temperature of water that is 100 ° C so that the water does not condense and can be conducted as steam (14) Where you want
La condensación de vapores (13) se puede efectuar por cualquier modo conocido, por ejemplo, un condensador de tubos radiantes, una cortina de agua, etc.Vapor condensation (13) can be carried out by any known way, for example, a tube condenser radiants, a water curtain, etc.
De la instalación tubular (3) y del paso inferior se extrae el residuo sólido (15) que en su mayoría es óxido de hierro con una granulometría y propiedades excelentes para utilizarlo como materia prima.From the tubular installation (3) and from the underpass the solid residue (15) which is mostly oxide of iron with granulometry and excellent properties for Use it as raw material.
Se parte de un lodo (1) procedente de la fabricación de tubos con la siguiente composición comparativa entre el lodo inicial (1) y los residuos sólidos (15) que se extraen de la instalación (3) después del proceso objeto del invento:It starts from a mud (1) from the manufacture of tubes with the following comparative composition between the initial sludge (1) and solid waste (15) that are extracted from the installation (3) after the process object of the invention:
\newpage\ newpage
Composición comparativaComposition comparative
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200300990A ES2230991B1 (en) | 2003-04-30 | 2003-04-30 | PROCEDURE AND PLANT OF MUD TREATMENT FROM THE STEEL INDUSTRY. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200300990A ES2230991B1 (en) | 2003-04-30 | 2003-04-30 | PROCEDURE AND PLANT OF MUD TREATMENT FROM THE STEEL INDUSTRY. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2230991A1 ES2230991A1 (en) | 2005-05-01 |
| ES2230991B1 true ES2230991B1 (en) | 2006-07-01 |
Family
ID=34565974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200300990A Expired - Lifetime ES2230991B1 (en) | 2003-04-30 | 2003-04-30 | PROCEDURE AND PLANT OF MUD TREATMENT FROM THE STEEL INDUSTRY. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2230991B1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3346417A (en) * | 1963-08-06 | 1967-10-10 | Int Alloys Ltd | Method of and apparatus for treating metal scrap, particles or the like contaminatedwith volatile and/or combustible substances |
| US4091545A (en) * | 1975-03-08 | 1978-05-30 | Nippon Kokan Kabushiki Kaisha | Method for removing water and grease deposit from rolling mill sludge |
| DE58909094D1 (en) * | 1989-03-02 | 1995-04-13 | Axbridge Holdings Ltd | Process and device for drying sewage sludge. |
| US5220733A (en) * | 1991-11-14 | 1993-06-22 | 21St Century Design Inc. | Modular radiant plate drying apparatus |
| CA2108597C (en) * | 1993-10-18 | 2000-05-23 | Philippe Varvat | Method and apparatus for dehydrating particulate material |
| US6128828A (en) * | 1999-07-27 | 2000-10-10 | Wang; Chao-Chun | Drying machine |
-
2003
- 2003-04-30 ES ES200300990A patent/ES2230991B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ES2230991A1 (en) | 2005-05-01 |
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