KR101115488B1 - Apparatus for continuous-type thermal disintegration treatment of high water content organic sludge and method therefor - Google Patents

Abstract

According to an aspect of the present invention, there is provided a continuous thermal heating device for decomposition of organic sludge, the thermal heating device, a feed pump for continuously introducing the organic sludge, and the organic sludge is introduced into a thermal warming process And a closed reactor, and control means for adjusting a pressure above the saturated steam pressure due to the thermal heating.

Organic sludge, thermal, heating, hermetic reactor, saturated steam pressure, control means

Description

Apparatus for continuous-type thermal disintegration treatment of high water content organic sludge and method therefor}

The present invention relates to an apparatus and a method for decomposing organic sludge, and more particularly, organic matters such as lignin sludge generated as a by-product from pulp production process, dewatered sludge generated in sewage treatment plants, wastewater sludge generated in factory wastewater treatment plants, and the like. The present invention relates to a device and method well suited for decomposing cell membranes or cell walls that make up most of the sludge through thermal warming using a sludge sealed reactor. In addition, the present invention relates to an apparatus and a method capable of implementing a large-volume treatment of organic sludge through a continuous flow reaction.

The amount of organic sludge is continuously increasing and its treatment is a big environmental problem, and landfill and ocean dumping, which are representative treatment methods, are blocked through various regulations.

Therefore, the weight reduction is essential for the treatment of sludge, and the weight reduction pretreatment is essential because it needs to be lowered to the proper moisture content for re-recycling. In order to produce a large amount of energy is consumed, in addition, many process problems due to odor or viscosity occurs. Therefore, it is urgent to develop a new treatment method that is environmentally friendly and capable of large-scale treatment.

Reduction of sludge by weight reduction includes mechanical methods such as crushing, wet milling, JET injection, chemical methods using acid and base, heat treatment, freezing / thawing, ozone, and enzyme treatment. There are some on-site commercial installations, and it is attracting attention as a technology that is expected to develop a lot in the future.

The prior art is a batch processing device disclosed in the applicant's Patent No. 10-0515497.

SUMMARY OF THE INVENTION An object of the present invention is to provide a continuous thermal heating apparatus and method which can be operated continuously and has good efficiency and / or economic efficiency by greatly improving the existing batch processing apparatus.

The continuous treatment apparatus proposed by the present invention is capable of mass processing compared to the conventional batch treatment apparatus based on the same reactor capacity. Since the batch processing device is operated sequentially, the standby time and the temperature increase time are required, and the energy consumption is also doubled.

Continuous thermal heating apparatus according to the present invention for achieving the above object is a continuous thermal heating device for decomposition of organic sludge, an input pump for continuously feeding the organic sludge into a closed reactor, and organic sludge is A closed reactor is introduced, a heating means for thermally heating the closed reactor for decomposition of the organic sludge, and a control means for controlling the temperature and pressure of the closed reactor to be above the saturated steam pressure.

The thermal warming device according to the present invention for achieving the above object is a decomposition device for cells and flocs of organic sludge, and a feed pump (or an input pump) for continuously introducing the organic sludge and the thermally warmed input It includes a closed reactor to be treated, and a control means for adjusting to form a pressure above the saturated steam pressure by the thermal warming.

For the thermal warming treatment, a heating means such as a heater is used. Various types of heaters may be used, and electric heaters or heaters using fruit oil are preferred.

The control means may comprise a control unit and means or apparatus controlled by the control unit and capable of adjusting the pressure or temperature according to the internal pressure or temperature of the hermetic reactor. The control means also comprise means for measuring the temperature and / or pressure of the closed reactor, and moreover the discharge unit introduced later.

The thermal heating temperature is 170 ~ 300 ℃, the pressure is adjusted to 793 ~ 8593KPa, and the hydraulic residence time (HRT) is operated for 1 ~ 2 hours.It is recommended that the water vapor pressure inside the closed reactor is maintained at a pressure higher than the saturated steam pressure of the corresponding temperature. desirable. The closed reactor uses a closed reactor with excellent airtight since pressure is generated by thermal expansion.

According to the present invention, in the apparatus for decomposing organic sludge while minimizing energy loss through proper heating and pressure formation, the main effect is that the area and length of the tube of the reactor can be optimized for effective production and operation.

Incidentally, it is possible to separate the water by decomposing the sludge through the object of the present invention, it is possible to easily reduce the sludge, and also can be utilized as a solid fuel, such as incineration heat recovery facilities for recycling. In addition, it has the effect that the original prevention of odor generation by the closed reactor is possible.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art.

1 is a schematic view showing the configuration of an organic sludge continuous treatment apparatus according to the present invention.

As shown in FIG. 1, the apparatus for decomposing organic sludge according to the present invention is a device for providing a decomposition method through thermal warming for organic sludge, the input part 10 and the reaction part 20 of a shear. ).

The input section 10 of the front end is composed of a hopper 11, a bridge breaker 12, and a continuous supply pump 13. The bridge breaker 12 is installed between the supply pump 13 and the hopper 11 for supplying sludge to the feed pump 13, and has a clearance of 1 to 10 mm, most preferably, within 5 mm. It is limited.

The reaction unit 20 is a part where thermal warming is performed, the closed reactor 22, a heater as a heating means for heating the reactor 22, a measurement for adjusting the temperature and pressure inside the reactor 22 Pressure and temperature sensing section 21 as means. The pressure and temperature detector 21 may include, for example, a pressure gauge and a temperature sensor. In addition, the reaction unit 20 may further include a stirrer 23.

The rear end of the reaction unit 20 is provided with a discharge unit (30). Although divided for convenience, the discharge unit 20 may or may not belong to a part of the reaction unit 20. The discharge unit 30 is provided with an outlet valve and a pressure and temperature sensing unit 31.

Note that the device according to the invention may also comprise a power source for supplying electrical energy to the components of the reaction unit 20 and / or the discharge unit 30.

Although not shown, the control unit controls the temperature and pressure of the reaction unit 20, in particular, the closed reactor 22, using the values measured by the temperature and pressure sensing units 21 and / or 31. The controller may include a computer capable of operating a control panel and a decomposition device and storing reaction conditions in real time. At this time, the condensation unit is composed of a heat exchanger for cooling the high temperature water vapor discharged at the time of pressure control.

The stirrer 23 is for stirring and conveying sludge continuously introduced into the closed reactor 22, and the temperature and pressure sensing unit 21 inside the reactor is for measuring the internal pressure and temperature of the reactor 22. . The temperature range is controlled to 170 ~ 300 ℃, the temperature required for sludge decomposition, and the pressure range is set to 793 ~ 8595KPa (above).

The heater is for heating the reactor 22, it is preferable to use an electric heating furnace or fruit oil. In this case, the heater may be installed in the form of an external jacket electric heating furnace, or may be installed in the form of fruit oil using the shaft of the stirrer 23 inside the reactor 22.

The discharge unit 30 is for discharging the slurry phase of the sludge decomposed through the outlet valve to the outside of the reactor 22.

At this time, the water in the sludge is the hot water by the thermal treatment, and serves to accelerate the decomposition of the sludge cells by acting as a heat medium in the sludge itself.

A discharge part 40 is provided at the rear end of the apparatus, and the discharge part 40 includes a primary discharge storage container 41, a secondary discharge storage container 42, and a solid-liquid separator 43.

What has been described above is only one preferred embodiment of the continuous thermal heating apparatus and method for decomposition of organic sludge according to the present invention, the present invention is not limited to the above-described embodiment, the following claims As claimed in the present invention without departing from the gist of the present invention, any person having ordinary knowledge in the field of the present invention will have the technical spirit of the present invention to the extent that various modifications can be made.

1 is a process schematic diagram showing the configuration of a continuous thermal warming device for the decomposition of cells and flocs of organic sludge according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: sludge supply part 11: hopper

12: bridge breaker 13: continuous feed pump

20: reaction unit 21: temperature and pressure detection unit

22: closed reactor 23: agitator

30: discharge unit 31: temperature and pressure detection unit

40: discharge portion 41: primary discharge storage container

42: secondary discharge storage container 43: solid-liquid separator

Claims (9)

In the decomposition apparatus of organic sludge, A supply pump for continuously inputting the organic sludge; A closed reactor in which the organic sludge is continuously added and thermally heated while continuously flowing; Heating means installed in the closed reactor for thermally heating the organic sludge; And And a control means for controlling the heating means, and adjusting the pressure so that a pressure equal to or higher than the saturated water vapor pressure due to the thermal heating is formed. The continuous thermal warming apparatus for decomposing organic sludge according to claim 1, wherein the control means adjusts the temperature and pressure in the hermetic reactor to 170 to 300 ° C and 793 to 8595 KPa. The continuous thermal heating apparatus for decomposition of organic sludge according to claim 2, wherein the temperature and pressure in the closed reactor are controlled at 170 to 300 ° C and 793 to 8595 KPa for 1 to 2 hours. The continuous thermal heating apparatus for decomposing organic sludge according to claim 1, wherein a bridge breaker is provided between the hopper for supplying the sludge to the supply pump and the gap is within 5 mm. According to claim 1, The heating means, the continuous thermal heating apparatus for the decomposition of the organic sludge, characterized in that for heating the heat of the closed reactor, an electric jacket in the form of an outer jacket installed outside the closed reactor. . 2. The continuous thermal heating apparatus according to claim 1, wherein the heating means has a heater on an axis inside the stirrer disposed in the closed reactor for thermal heating of the closed reactor. 7. The continuous thermal heating apparatus for decomposing organic sludge according to claim 6, wherein the heater uses fruit oil. delete delete

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