CN218262304U - Tank-type top-bottom composite water-heating and hot-stuffy device for steel slag - Google Patents

Abstract

The utility model relates to a steel slag pot-type top and bottom composite water heating stifle device, which comprises a stifle pot, a slag containing component, a spray head component, a sensor component, a valve component and a central control system, wherein the slag containing component is arranged in the stifle pot, the top wall and/or the side wall of the stifle pot is provided with the spray head component and/or the sensor component, the central control system is electrically connected with the spray head component, the sensor component and the valve component, and the stifle pot is provided with a pot cover, a pot wall and a pot bottom; the device has high automation degree, can be operated off-line through a central control system, and can be used for collecting and remotely controlling the operation parameters of key process devices such as a tank cover, a top spray head, a bottom spray head, an exhaust valve, a drain valve and the like through programming.

Description

Steel slag tank type top-bottom composite water heating and stifling device

Technical Field

The utility model relates to a steel slag pot-type top and bottom composite water heating and suffocating device, in particular to a steel slag pot-type top and bottom composite water heating and suffocating device containing free calcium oxide with unqualified stability.

Background

About 0.12 to 0.14 ton of steel slag is generated per 1 ton of steel, the steel yield in China is huge, and the steel slag generation amount in China is about 1.3 hundred million tons in 2020 year. At present, the utilization rate of steel slag in China is less than 30%, a large amount of steel slag is not recycled, land is occupied, soil and water systems are polluted, and the problem of serious environmental pollution is caused in the past.

The steel slag can not be used as a large resource, and the main problem is that the steel slag which is not stabilized has poor stability. The steel slag with unqualified stability is used in the fields of buildings and roads, which can cause the problems of expansion, cracking and the like, and has great potential safety hazard.

The steel slag of the common converter often contains 1-6% of free CaO, and the free CaO generates volume expansion phenomenon by reaction with water, thereby causing the products such as building materials and the like produced by the steel slag to crack and the like. Therefore, the key point of the resource utilization of the steel slag lies in the stabilization of the steel slag, and the stability of the steel slag can be ensured only by eliminating free calcium oxide in the steel slag.

At present, less than half of steel slag in China is treated by adopting stabilization processes such as hot disintegration and the like, and more than 50 percent of the steel slag is not subjected to stabilization treatment. More than 6000 million tons of steel slag are newly produced in China every year without stabilization treatment, and the quantity of the steel slag with unqualified storage stability accumulated for many years is hundreds of millions of tons, so that the steel slag can be recycled only by stabilization treatment. The traditional hot stuffy process usually adopts a top water pumping cooling process, the water pumping period is long, the cooling efficiency is low, the water consumption is large, and the water pumping process needs to be adjusted urgently to improve, so that the hot stuffy process is efficient, energy-saving and consumption-reducing.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a compound device that makes water hot stifled at bottom of slag pot-type to solve the problem that makes water cycle long among the prior art, cooling efficiency is low, and the water consumption is big, realized hot stifled high efficiency and energy saving and consumption reduction.

The utility model provides a compound hydrothermal stifled device of beating at bottom of slag pot-type top, including stifled jar, flourishing sediment subassembly, shower nozzle subassembly, sensor module, valve module, center control system, flourishing sediment subassembly is located in the stifled jar, stifled jar roof and/or lateral wall set up shower nozzle subassembly and/or sensor module, shower nozzle subassembly, sensor module and valve module are connected to the center control system electricity, stifled jar has cover, jar wall, tank bottoms.

Further, flourishing sediment subassembly includes slag ladle, support, gusset, slag ladle hole, the slag ladle through the support unsettled support in the tank bottoms, the slag ladle outer wall is equipped with the gusset, the support passes through the gusset and connects the slag ladle, slag ladle bottom and lateral wall lower part are equipped with slag ladle hole.

Furthermore, the spray head assembly comprises a top spray head and a bottom spray head, the top spray head is arranged below the tank cover, and the bottom spray head is arranged at the joint of the bottom of the tank wall and the bottom of the tank.

Furthermore, a water retaining ring is arranged on the outer ring of the top spray head, the top spray heads are uniformly distributed below the tank cover, and the number of the top spray heads is 4-10.

Furthermore, the bottom spray heads are uniformly distributed on the inner side of the tank wall along the circumferential direction of the sullage tank, and the number of the bottom spray heads is 2-8.

Further, sensor module includes temperature transmitter, pressure transmitter, level transmitter, tank wall upper portion is equipped with temperature transmitter and pressure transmitter in proper order, level transmitter locates tank wall outside bottom.

Further, the valve module includes explosion-proof valve, relief valve, discharge valve, leads to the nitrogen valve drain valve, the cover top of stifled jar is equipped with explosion-proof valve, and the top is equipped with the relief valve placed in the middle, and jar wall upper portion is equipped with discharge valve, and the middle part is equipped with leads to the nitrogen valve, and the tank bottoms is equipped with the drain valve placed in the middle.

Furthermore, the central control system feeds back data signals to open the tank cover through the sensor assembly and controls the opening degree of the spray head assembly and the valve assembly.

Furthermore, the thickness of the tank cover, the tank wall and the tank bottom is not less than 20mm, the design pressure of the closed tank is 0.6-3.0 MPa, and the working pressure is 0.2-2.0 MPa.

Furthermore, the volume of the slag pot is not less than 5m & lt 3 & gt, the wall thickness is not less than 50mm, the diameter of each slag pot hole is 5-50 mm, the shortest distance between every two adjacent slag pot holes is not less than 100mm, the support is made of steel structure materials with the thickness of steel plates not less than 15mm, the width of the support is arranged at the joint of the support and the rib plates, and the height of the support is not less than 400mm.

The utility model discloses based on the hot vexed characteristic of slag pot-type, accurate operation of fetching water has realized the rationalization operation of production processes such as hot vexed pressure, drainage, has reduced energy medium consumption, has realized the high-efficient stabilization of slag and has handled and cool off fast.

The utility model discloses the vexed technological process of fetching water of heat is simple, equips degree of automation height, and accessible central control system carries out the off-line operation and goes on, and the programming is realized collecting and the remote control to the cover, top shower nozzle, end shower nozzle, discharge valve, key process units such as drain valve's operating parameter. The utility model discloses a jar-type top end is compound beats hydrothermal vexation, has improved the vexed processing pressure of heat, adopts novel water-beating mode to improve slag cooling efficiency, has reduced the vexed processing time period of heat by a wide margin.

The utility model discloses a beat water cooling process stage by stage, it is long when having improved the vexed process pressurize of heat, be favorable to the stability of clearing up of free calcium oxide, reduced the slag cool time by a wide margin, the operation of beating water accurately simultaneously has realized the rationalization operation of production processes such as the vexed pressure of heat, drainage, has reduced energy medium consumption, and energy saving and emission reduction effect is obvious. The utility model adopts forced cooling technology in later period, which greatly reduces the cooling time of steel slag. The utility model discloses degree of automation is high, and processing cycle is short, and economic cost is reasonable, handles back slag crushing effect, and stability is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of the tank-type top-bottom composite water-heating and smoldering device for steel slag.

Description of the reference numerals:

the device comprises a blank tank-1, a tank cover-2, a tank wall-3, a tank bottom-4, steel slag-5, a slag tank-6, a support-7, a rib plate-8, a top spray head-9, a bottom spray head-10, a water retaining ring-11, an explosion-proof valve-12, a safety valve-13, an exhaust valve-14, a temperature transmitter-15, a pressure transmitter-16, a nitrogen introducing valve-17, a liquid level transmitter-18, a slag tank hole-19, a drain valve-20 and a central control system-21.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to the attached drawing 1, the utility model provides a compound hydrothermal stifled device of beating at bottom of slag pot-type, including stifled jar 1, flourishing sediment subassembly, shower nozzle subassembly, sensor module, valve module, center control system 21, flourishing sediment subassembly is located in stifled jar 1, stifled 1 roof of jar and/or lateral wall set up shower nozzle subassembly and/or sensor module, shower nozzle subassembly, sensor module and valve module are connected to center control system 21 electricity, stifled jar 1 has cover 2, jar wall 3, tank bottoms 4.

Specifically, flourishing sediment subassembly includes sediment jar 6, support 7, gusset 8, sediment jar hole 19, sediment jar 6 through the support 7 unsettled support in tank bottoms 4, 6 outer walls of sediment jar are equipped with gusset 8, support 7 passes through gusset 8 and connects sediment jar 6, 6 bottoms of sediment jar are equipped with sediment jar hole 19 with the lateral wall lower part.

Specifically, the spray head assembly comprises a top spray head 9 and a bottom spray head 10, wherein the top spray head 9 is arranged below the tank cover 2, and the bottom spray head 10 is arranged at the joint of the bottom of the tank wall 3 and the tank bottom 4.

Specifically, the outer ring of the top spray head 9 is provided with a water retaining ring 11, the top spray heads 9 are uniformly distributed below the tank cover 2, and the number of the top spray heads 9 is 4-10.

Specifically, the bottom spray heads 10 are uniformly distributed on the inner side of the tank wall 3 along the circumferential direction of the stuffy tank 1, and the number of the bottom spray heads 10 is 2-8.

Specifically, sensor assembly includes temperature transmitter 15, pressure transmitter 16, liquid level transmitter 18, 3 upper portions of jar wall are equipped with temperature transmitter 15 and pressure transmitter 16 in proper order, liquid level transmitter 18 locates jar wall 3 outside bottoms.

Specifically, the valve component comprises an explosion-proof valve 12, a safety valve 13, an exhaust valve 14 and a drain valve 20 communicated with a nitrogen valve 17, wherein the explosion-proof valve 12 is arranged at the top of the tank cover 2 of the stifle tank 1, the safety valve 13 is arranged in the middle of the top, the exhaust valve 14 is arranged at the upper part of the tank wall 3, the nitrogen valve 17 is arranged in the middle of the tank wall, and the drain valve 20 is arranged in the middle of the tank bottom 4.

Specifically, the central control system 21 feeds back a data signal to open the tank cover 2 through the sensor assembly, and controls the opening degrees of the nozzle assembly and the valve assembly.

Specifically, the thickness of the tank cover 2, the tank wall 3 and the tank bottom 4 is not less than 20mm, the design pressure of the stuffy tank 1 is 0.6-3.0 MPa, and the working pressure is 0.2-2.0 MPa.

Specifically, the volume of the slag pot 6 is not less than 5m & lt 3 & gt, the wall thickness is not less than 50mm, the diameter of each slag pot hole 19 is 5-50 mm, the shortest distance between every two adjacent slag pot holes 19 is not less than 100mm, the support 7 is made of a steel structure material with the steel plate thickness not less than 15mm, the width of the support 7 is arranged at the joint of the support 7 and the rib plate 8, and the height of the support 7 is not less than 400mm.

The utility model also provides a compound hydrothermal stifling device of beating of slag pot-type top end, include: the device comprises a stuffy tank 1, a tank cover 2, a tank wall 3, a tank bottom 4, steel slag 5, a slag tank 6, a bracket 7, a rib plate 8, a top spray head 9, a bottom spray head 10, a water retaining ring 11, an explosion-proof valve 12, a safety valve 13, an exhaust valve 14, a temperature transmitter 15, a pressure transmitter 16, a nitrogen valve 17, a liquid level transmitter 18, a slag tank hole 19, a drain valve 20 and a central control system 21; the pot cover 2 is arranged at the top of the stuffy pot 1, the pot wall 3 is arranged at the middle side part of the stuffy pot 1, and the pot bottom 4 is arranged at the bottom of the stuffy pot 1; the steel slag 5 is placed in a slag pot 6, and the slag pot 6 is placed on a bracket 7 through a rib plate 8; the top spray head 9 is arranged below the tank cover 2 and above the slag tank 6; the bottom spray head 10 is arranged at the bottom of the tank wall 3 and close to the tank bottom 4, the water retaining ring 11 is arranged below the tank cover 2, and the top spray head 9 is arranged at the periphery; the explosion-proof valve 12, the safety valve 13 and the exhaust valve 14 are arranged above the tank cover 2; a temperature transmitter 15, a pressure transmitter 16 and a nitrogen valve 17 are arranged on the side part of the tank wall 3; the level transmitter 18 is arranged at the side part of the stuffy tank 1 andthe tank bottoms are communicated with each other 4; the slag pot hole 19 is arranged at the side part and the bottom part of the slag pot 6; a drain valve 20 is located directly below the tank bottom 4. The central control system 21 is connected with the tank cover 2, the top nozzle 9, the bottom nozzle 10, the explosion-proof valve 12, the safety valve 13, the exhaust valve 14, the temperature transmitter 15, the pressure transmitter 16, the nitrogen valve 17, the liquid level transmitter 18 and the drain valve 20, the temperature transmitter 15, the pressure transmitter 16 and the liquid level transmitter 18 feed back data signals to open the tank cover 2, the slag barrel 3 is lifted, the opening degrees of the top nozzle 9 and the bottom nozzle 10, the opening degree of the exhaust valve 14, the opening degree of the nitrogen valve 17 and the opening degree of the drain valve 20 are controlled and adjusted. The tank cover 2, the tank wall 3 and the tank bottom 4 are made of steel plates with the thickness not less than 20mm, the design pressure of the stuffy tank 1 is 0.6-3.0 MPa, and the working pressure is 0.2-2.0 MPa. The volume of the slag pot 6 is not less than 5m ³ The wall thickness is not less than 50mm, the slag pot holes 19 are distributed at the bottom of the slag pot 6 and below the middle part of the side part of the slag pot 6, the diameter of each slag pot hole 19 is 5-50 mm, and the shortest distance between every two adjacent slag pot holes 19 is not less than 100mm. The support 7 is made of steel structure materials, the thickness of a steel plate is not less than 15mm, the width of the support 7 is arranged at the joint of the support 7 and the rib plate 8, and the width of the support 7 is not less than 400mm. The top nozzles 9 are uniformly distributed below the tank cover 2, and the number of the top nozzles 9 in one stuffy tank 1 is 4-10. The water retaining ring 11 is a steel structure baffle and is arranged on the periphery of the outer side of the top spray head 9 to prevent the top spray head 9 from spraying water to fall outside the slag tank 6. The bottom spray heads 10 are arranged at the bottom of the tank wall 3 and close to the tank bottom 4, and the number of the bottom spray heads 10 in one stuffy tank 1 is 2-8. The temperature measuring range of the temperature transmitter 15 is 0-300 ℃, and the pressure measuring range of the pressure transmitter 16 is 0-3 MPa; the exhaust valve 14, the nitrogen valve 17 and the drain valve 20 are all electromagnetic regulating valves, wherein the caliber of the exhaust valve 14 is not less than 60mm, the caliber of the nitrogen valve 17 is not less than 20mm, and the caliber of the drain valve 20 is not less than 200mm. The range of the liquid level transmitter 18 is 800-2000 mm.

The method for carrying out the hot pressing and the hot pressing on the tank-type top and bottom of the steel slag by adopting the device comprises the following steps:

(1) The slag tank 6 filled with the steel slag 5 with a certain temperature is transferred to the stuffy tank 1, placed on the bracket 7, the tank cover 2 is closed and locked, the exhaust valve 14, the nitrogen valve 17 and the drain valve 20 are in a closed state, and no water is accumulated in the tank bottom 4.

(2) And simultaneously opening the top spray head 9 and the bottom spray head 10 to carry out primary water-spraying cooling treatment on the steel slag 5, wherein the high-temperature steel slag generates water vapor when meeting water, and the pressure in the stuffy tank 1 is continuously increased to reach the set working pressure.

(3) And continuously opening the top spray head 9 and the bottom spray head 10, and performing secondary water-spraying cooling treatment on the steel slag 5 to ensure that the constant working pressure is maintained in the stuffy tank 1 until a certain pressure maintaining time is reached.

(4) Closing the bottom spray head 10, continuously opening the top spray head 9 and improving the water fetching amount, fetching water for three times for the steel slag 5, forcibly cooling the steel slag in the stuffy tank 1 to ensure that the environmental temperature in the stuffy tank 1 is quickly and continuously reduced to a certain temperature, and closing the top spray head 9 to stop fetching water.

(5) In the process of three times of water pumping, when the numerical value of the liquid level transmitter 18 in the stuffy tank 1 is higher than the set position, preferably 0.5m, the drain valve 20 is automatically opened for draining, and the drain valve 20 is not closed any more thereafter.

(6) And opening the nitrogen valve 17 20 minutes before the hot sealing is finished, introducing nitrogen into the sealed tank 1, simultaneously opening the exhaust valve 14, the nitrogen valve 17 and the drain valve 20 until the hot sealing period is finished, opening the tank cover 2, and lifting out the slag tank 6.

Furthermore, the operations of the steps can be performed through offline operation of a central control system 13, and data collection and remote operation control are performed on the tank cover 2, the top spray head 9, the bottom spray head 10, the explosion-proof valve 12, the safety valve 13, the exhaust valve 14, the temperature transmitter 15, the pressure transmitter 16, the nitrogen through valve 17, the liquid level transmitter 18 and the drain valve 20 through programming.

Primary water pumping and cooling treatment, wherein the water pumping amount per ton of steel slag is 0.1-1 t, and the primary water pumping time is 3-10 minutes; secondary water pumping and cooling treatment, wherein the water pumping amount per ton of steel slag is 0.03-0.3 t, and the secondary water pumping time is 30-90 minutes; and carrying out water pumping and cooling treatment for the third time, wherein the water pumping amount per ton of steel slag is 0.5-2 t, and the water pumping time for the second time is 20-60 minutes. When the environmental temperature in the closed tank 1 is reduced to below 80 ℃, the nitrogen valve 17 can be opened, and when the environmental temperature is reduced to below 70 ℃, the three water-pumping cooling operations can be stopped.

After the water supply is stopped for three times, the water discharge time is kept to be not less than 10 minutes under the condition that the exhaust valve 14 is opened. The whole steel slag pot-type top-bottom composite beating hydrothermal disintegration treatment period is 1.5-2.5 hours, the water content of the steel slag after the hydrothermal disintegration is lower than 10%, the steel slag pulverization rate is over 65%, the free calcium oxide content in the steel slag is lower than 2%, and the water immersion expansion rate is lower than 1.5%.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a compound hydrothermal stifled device of beating at bottom of slag pot-type top, its characterized in that, includes stifled jar (1), flourishing sediment subassembly, shower nozzle subassembly, sensor subassembly, valve module, central control system (21), flourishing sediment subassembly is located in stifled jar (1), stifled jar (1) roof and/or lateral wall set up shower nozzle subassembly and/or sensor subassembly, shower nozzle subassembly, sensor subassembly and valve module are connected to central control system (21) electricity, stifled jar (1) has cover (2), jar wall (3), tank bottoms (4).

2. The steel slag pot-type top-bottom composite water-heating and hot-stuffiness device as claimed in claim 1, wherein the slag-containing assembly comprises a slag pot (6), a support (7), a rib plate (8) and a slag pot hole (19), the slag pot (6) is supported in the air at the pot bottom (4) through the support (7), the rib plate (8) is arranged on the outer wall of the slag pot (6), the support (7) is connected with the slag pot (6) through the rib plate (8), and the slag pot hole (19) is formed in the bottoms and the lower part of the side wall of the slag pot (6).

3. The steel slag pot-type top-bottom composite water heating and smoldering device as claimed in claim 1, wherein the nozzle assembly comprises a top nozzle (9) and a bottom nozzle (10), the top nozzle (9) is arranged below the pot cover (2), and the bottom nozzle (10) is arranged at the joint of the bottom of the pot wall (3) and the pot bottom (4).

4. The steel slag pot-type top-bottom composite water-heating stuffiness device according to claim 3, wherein a water retaining ring (11) is arranged on an outer ring of the top nozzle (9), the top nozzles (9) are uniformly distributed below the pot cover (2), and the number of the top nozzles (9) is 4-10.

5. The steel slag pot-type top-bottom composite water-heating stuffiness device according to claim 3, wherein the bottom nozzles (10) are uniformly distributed on the inner side of the pot wall (3) along the circumferential direction of the stuffiness pot (1), and the number of the bottom nozzles (10) is 2-8.

6. The steel slag pot-type top-bottom composite water heating and smoldering device as claimed in claim 1, wherein the sensor assembly comprises a temperature transmitter (15), a pressure transmitter (16) and a liquid level transmitter (18), the temperature transmitter (15) and the pressure transmitter (16) are sequentially arranged on the upper portion of the pot wall (3), and the liquid level transmitter (18) is arranged at the bottom of the outer side of the pot wall (3).

7. The steel slag pot-type top-bottom composite water-heating and hot-stifling device as claimed in claim 1, wherein the valve assembly comprises an explosion-proof valve (12), a safety valve (13), an exhaust valve (14) and a nitrogen valve (17) and a drain valve (20), the top of the pot cover (2) of the stifled pot (1) is provided with the explosion-proof valve (12), the top is centrally provided with the safety valve (13), the upper part of the pot wall (3) is provided with the exhaust valve (14), the middle part is provided with the nitrogen valve (17), and the bottom (4) is centrally provided with the drain valve (20).

8. The steel slag pot-type top-bottom composite water heating and smoldering device as claimed in claim 1, wherein the central control system (21) feeds back data signals to open the pot cover (2) through the sensor assembly and controls the opening degree of the nozzle assembly and the valve assembly.

9. The steel slag pot-type top-bottom composite water-heating and hot-stuffiness device as claimed in claim 1, wherein the thickness of the pot cover (2), the pot wall (3) and the pot bottom (4) is not less than 20mm, the design pressure of the stuffy pot (1) is 0.6-3.0 MPa, and the working pressure is 0.2-2.0 MPa.

10. The steel slag pot-type top-bottom composite water-beating thermal stuffiness device as claimed in claim 2, wherein the volume of the slag pot (6) is not less than 5m ³ The wall thickness is not less than 50mm, the diameter of each slag pot hole (19) is 5-50 mm, the shortest distance between every two adjacent slag pot holes (19) is not less than 100mm, the support (7) is made of steel structure materials with the thickness of steel plates not less than 15mm, the width of the support (7) is arranged at the joint of the support (7) and the rib plate (8), and the height of the support (7) is not less than 400mm.

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