KR20020083103A - An carbonizing apparatus and carbonizing method of condensed dust using the apparatus - Google Patents

Abstract

PURPOSE: To provide a carbonizing device and a carbonizing method using the same, by which device, even coagulated sludge containing fire-resistant inorganic materials and water can be carbonized without additional oil or powdered coal. CONSTITUTION: The method for carbonizing the coagulated sludge and the device therefor are characterized in that the coagulated sludge is fed to the higher end of a closed and inclined type trough 2 disposed in a combustion furnace 1 and that the coagulated sludge on the closed and inclined type trough 2 is carbonized in a reducing atmosphere by heating with the combustion furnace 1 while the coagulated sludge is moving downward to an outlet 6 of the carbonized product at the lower end by vibrating the closed and inclined type trough.

Description

CARBONIZING APPARATUS AND CARBONIZING METHOD OF CONDENSED DUST USING THE APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbonization apparatus capable of carbonizing an agglomerated sludge containing inorganic matter or moisture that is difficult to burn, and a carbonization method of agglomerated sludge using the same.

There is a method by addition of an inorganic or organic coagulant as a means of wastewater (wastewater) purification treatment containing a large amount of organic matter to be removed. By this flocculation process, flocculation sludge generate | occur | produces in large quantities as a dehydrated mass. Most of the flocculated sludge is an organic substance composed of carbon or nitrogen, but in the case where an inorganic coagulant such as iron or aluminum is used, many of these inorganic substances are contained in the dehydrated mass of the flocculated sludge. In the dewatering treatment of sewage sludge, coal and iron salts are added to the sewage sludge as a dehydration aid, and the sewage sludge is dewatered in a pressurized dehydrator such as a filter press. When coal and iron salts are used as this dehydration aid, the amount of dehydration mass generated by the addition of preparation increases, making it difficult to reduce the capacity. In addition, since coal and iron salts are made of inorganic materials, the amount of heat that sludge has is reduced by half in dewatering masses, and in many cases, oil is used as a supporting material in incineration and melting.

Japanese Patent Application Laid-Open No. 8-119782 discloses a coal sludge agglomerate obtained using low carbon inverted coarse pulverized coal, a coal containing mass obtained using a low carbon fine coarse pulverized coal, and a carbonaceous livestock concentrate obtained using a low carbon inverted coarse pulverized coal. Low carbonization incorporation finely pulverized coal and fermented aged minced bark flour and dried puff moss powder in a mixture of water and a fibrous adsorbent consisting of porous cellulose or its low carbides or agglomerations without carbon sludge and waste oil or wastewater containing oil. Are mixed, the mixture is dried or dried, and then the dried or dried product is press-molded into a granulated body to produce a fuel and fertilizer.

The present inventors have studied the above-mentioned apparatus capable of carbonization without adding oil or pulverized coal, even if it is a flocculant containing inorganic matter or moisture which is difficult to burn, and a carbonization method using the same.

1 is a side view of the carbonization device of the present invention.

Figure 2 is an enlarged perspective view A-A perspective view in FIG.

※ Explanation of symbols about main part of drawing ※

1: combustion furnace 2: inclined gutter

3: excitation means 4: raw material supply port

5: Hopper 6: carbide outlet

7: Cooling jacket 8: Burner

9: reciprocating cylinder 10: roller

11: air vent

As a result of examining the above problem, it has come to invent a carbonization apparatus comprising an inclined trough disposed in a combustion furnace and an excitation means for imparting vibration to the trough. Both ends of the inclined trough are respectively disposed outside the combustion furnace, and the carbonization device is provided with a raw material supply inlet on the upper side outside the incinerator of the inclined trough and a carbide product outlet on the lower side outside the incinerator. By arranging the cooling jacket along the inclined gutter to prevent deformation due to high heat.

The inclined gutter is sealed by removing the raw material supply port and the carbide product outlet. It is a carbonization device in which a raw material such as agglomerated sludge is moved in the direction of a carbide product outlet in a vibrating trough, and carbonized in a reduced (dry) state.

Examples of the excitation means for moving the raw materials or products in the gutters include a reciprocating cylinder connected to an inclined gutter, a crank connected to a rotating prime mover, a cam, a vibratory vibrator, and the like.

In the carbonization method of the flocculation sludge of the present invention, the flocculation sludge is supplied to one upper side of the sealed inclined gutter disposed in the combustion furnace, and the sealed inclined gutter is vibrated to move in the direction of the lower product outlet while being sealed by heating by the combustion furnace. It characterized in that the flocculation sludge in the inclined trough is carbonized in a reduced state.

Next, the present invention will be described in detail by way of examples. 1 is a side view of a carbonization device of the present invention, Figure 2 is an enlarged cross-sectional view A-A in FIG. As shown in these figures, in the carbonization apparatus of the present invention, an inclined trough 2 is disposed in the combustion furnace 1, and an excitation means 3 for imparting vibration to the trough 2 is disposed. The inclined gutters 2 are tubular and both ends thereof are outside the combustion furnace 1, respectively. There is a raw material supply port 4 at the high end side 2a outside the combustion furnace of the inclined gutter 2, and a hopper 5 at the upper portion thereof. A carbide product outlet 6 is disposed at the outer low side of the combustion furnace 1. The inclined gutters 2 are arranged along the hollow tube cooling jackets 7 and 7. The inside of the jacket is mainly used to prevent the refrigerant from passing through and deforming due to the high heat of the inclined trough (2). The combustion furnace 1 has a burner 8 at the bottom to heat the furnace. The burner 8 is also led to combustion treatment by carbonization exhaust gas generated during carbonization in the inclined trough 2. Therefore, odors or harmful substances resulting from carbonization in the reducing atmosphere are not discharged to the outside. The exhaust from the exhaust port 11 of the combustion furnace 1 can be used as a heat source for drying raw materials such as flocculated sludge.

The trough 2 is sealed to remove the raw material supply port 4 and the carbide product outlet 6. Therefore, the raw material, such as agglomerated sludge, moves in the vibrating gutter 2 in the direction of the carbide product outlet 6, and is carbonized in a reduced (dry) state.

The reciprocating cylinder 9 is connected to the inclined gutter 2 in this embodiment as the excitation means 3 for moving the raw materials or products in the gutter 2. The structure of the reciprocating cylinder 9 is a structure in which a switching valve for supplying or exhausting pressurized air is arranged before and after the stroke range of the piston. Other vibrating means may be employed as long as the inclined gutter 2 can be reciprocated. The inclined trough 2 is provided with rollers 10 and 10 for smooth reciprocating movement.

Next, the embodiment which carbonized using the said apparatus is shown. The size of the sealed inclined gutter (2) disposed in the combustion furnace (1) was 600mm wide x 230mm high x 5.5mm long, and the dewatering lump of agricultural colony wastewater agglutination sludge was removed from the hopper 5 on the upper side. The flocculation sludge in the hermetically sealed inclined trough was carbonized in a reduced state by heating with a combustion furnace while supplying H and vibrating the hermetically inclined trough 2 in the direction of the lower product outlet. The main components of dehydrated lumps in agglomerated sludge of agricultural colonies are 30% carbon, 5.1% nitrogen, 2.6% phosphorus, 2.7% aluminum, 2.1% iron, 1.0% sodium and 0.5% potassium carbonate. The deposition height of the flocculated sludge in the inclined gutter 2 was 30 mm, and carbonized in a reduced state by staying in the furnace for 10 minutes.

By carbonization, carbides of the product were obtained at a capacity of 210 Kg / H. The gas generated by carbonization in the inclined trough 2 is re-burned in the combustion furnace 1 and used again for drying the flocculated sludge as a heat source for carbonization, so that the amount of fuel of the burner 8 or the dryer is about several%. Could cut.

The carbonization apparatus of the present invention can carbonize sludge, which is difficult to carbonize, including a large amount of inorganic matter and moisture, such as agglomeration sludge of agricultural colony wastewater, without oil or coal auxiliary fuel. In addition, it was possible to reduce the heating fuel required for carbonization. In addition, carbonization was possible without generating odors. Moreover, the carbide of the obtained product has the characteristics that it can be used as soil improvement, an adsorbent, a heat insulating material, and other various materials.

Claims (6)

And an inclined trough disposed in the combustion furnace, and an excitation means for applying vibration to the trough. The method of claim 1, Both ends of the inclined trough are respectively disposed outside the combustion furnace, the carbonization device characterized in that the raw material supply port on the upper side outside the combustion furnace of the inclined trough, and the carbide product outlet on the lower side outside the combustion furnace. The method of claim 1, A carbonization apparatus characterized by arranging a cooling jacket along an inclined gutter. The method according to any one of claims 1 to 3, Carbonized device characterized in that the inclined gutter is sealed by removing the raw material supply port and the carbide product outlet. The method of claim 1, Carbonization device, characterized in that any one of the reciprocating cylinder, crank, cam, vibrator connected to the inclined trough. Agglomerated sludge is supplied to the upper end of the sealed inclined gutter arranged in the combustion furnace, and the coagulated sludge in the sealed inclined gutter is reduced by heating by the combustion furnace while vibrating the sealed inclined gutter to move to the lower product extraction direction. Carbonization method of agglomerated sludge, characterized in that the carbonization.