KR20150036866A

KR20150036866A - Using superheated steam and glycerol wastewater Evaporation processing methods and facilities

Info

Publication number: KR20150036866A
Application number: KR20130115824A
Authority: KR
Inventors: 정권락
Original assignee: 정권락
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2015-04-08

Abstract

The present invention relates to a wastewater evaporation processing method using superheated steam and glycerol, and more specifically, to a wastewater evaporation processing method and facility, wherein the method comprises circulating a part of steam evaporated from wastewater to be overheated with a superheater; using the overheated steam as a heat medium of evaporating wastewater to evaporate the wastewater; and condensing and recovering the evaporated steam. Meanwhile, glycerol is absorbed to the wastewater and sprayed to the overheated steam such that water from the wastewater is evaporated, sludge is absorbed to the glycerol, and odorous gas generated from the evaporated steam is incinerated. The wastewater is heated and evaporated in a space of an evaporation tank by the overheated steam such that the sludge is not accumulated in the facility, and the sludge, which is absorbed to the glycerol and condensed, is recovered with the glycerol and is capable of being used as fuel. The wastewater evaporation processing facility circulates the waste steam evaporated in the wastewater to use the waste steam as the heat medium and generates the overheated steam by using the waste heat from which the the odorous gas is incinerated, thereby taking advantage of simplicity and high heat efficiency.

Description

TECHNICAL FIELD [0001] The present invention relates to a superheated steam and glycerol wastewater evaporation processing methods and facilities,

The present invention relates to a method for evaporating wastewater by using superheated steam and glycerol, more particularly, by circulating a part of the steam evaporated in wastewater, thereby overheating in a superheater, and using superheated steam as a heating medium for evaporating wastewater, And evaporating the water in the wastewater so that the water in the wastewater is evaporated, the sludge is absorbed in glycerol, and the vapor to be evaporated is condensed and separated from the odorous gas. will be.

Evaporation of highly contaminated wastewater should involve a comprehensive end-of-pipe process including low-cost fuel use, facility maintenance, efficient heating methods, sludge treatment, and odor removal.

When low purity glycerol with high water content is heated to high temperature by the method of refining glycerol, low boiling water evaporates and glycerol flows down. This method is applied to wastewater evaporation.

Since most of the main cost of waste water evaporation is the cost of energy, it is necessary to provide a combustion facility using low-cost fuel. Such a combustion facility should include a facility for incinerating the odor generated when the waste water is evaporated.

Utilizing superheated steam as the heat medium to transfer heat to the wastewater can transfer the heat from the air to the wastewater and evaporate, so that the malicious wastewater can be evaporated using a simple facility.

Glycerol is absorbed unlimitedly in water and is a burning substance, so it can be absorbed into wastewater and used as a sludge absorber to absorb sludge and incinerate.

In the technology required for evaporation of wastewater, a comprehensive plan for fusion of technologies such as heat source and heat transfer method, facility structure, sludge treatment, and odor removal method is suggested.

If the superheated steam is used as the heat medium, heat can be transferred from the air to the wastewater and can be evaporated without a separate facility. Therefore, some of the steam that is evaporated is circulated and superheated steam is used as a heat medium for evaporating the waste water.

The evaporator provides a structure in which the superheated steam transfers heat to the wastewater and provides sufficient space for the wastewater to evaporate and the sludge is continuously discharged without accumulating or accumulating inside.

Glycerol, which is well dissolved in water and boiling point higher than water, is used as an absorber. Therefore, water with low boiling point is evaporated at a certain temperature and glycerol having boiling point of 290 ℃ is absorbed by sludge.

Since glycerol has a calorie value of 4,320 psi / kg, the sludge absorbed by glycerol can be used as fuel only by dehydration, or it can be incinerated and the glycerol that is filtered is reused.

A partial condensation of the generated steam is circulated through a blower to be used as a heating medium for the self heating, and non-condensable gas causing odor is mixed with combustion air of a burner to provide a treatment method.

The superheater uses the low-cost fuel to incinerate the odor at high temperature and provides superheated steam using the incineration heat. The steam supplied to the superheater is supplied with the condensed steam which is not condensed in the condenser.

The present invention is a facility for evaporating wastewater and collecting it as condensed water, and constitutes a heat supply facility for supplying superheated steam to the evaporation source and an evaporation facility for using glycerol as an absorber.

The evaporator 100 using the superheated steam 420 as a heat source has a structure in which the lower end of the evaporator 100 is used as a thickener 120 filled with glycerol 130 and the upper end of the superheated steam 420 is utilized as an evaporation space. 420) crosses the wastewater sprayed from the top and transfers heat to the wastewater to evaporate.

The glycerol 130 in the evaporator 100 is circulated to the circulation pump 150 and mixed with the mixed wastewater into the mixer 140. The temperature in the tank is maintained at about 150 ° C. so that water in the wastewater is evaporated, The absorbed glycerol 130 is allowed to flow down.

The steam used as the heating medium is heated by using the superheater 400 to generate superheated steam generated in the cooler 300. The superheated steam supplied from the lower end of the superheater 400 and the evaporator 100 is cooled 300 ).

The steam cooled in the heat exchanger (200) is condensed in the cooler (300) by bringing it into contact with the cooling water. At this time, the relatively heavy humid air which can not be condensed flows downward, and the odor gas is ascended to separate and discharge.

The superheater 400 includes a superheater 400 and a boiler 450. The superheater 400 generates a superheated steam 420 by burning odors in the inner combustion chamber 410 and produces superheated steam 420 outside, (400).

The present invention is a simple and energy efficient evaporation facility because it circulates the vapor evaporated from waste water and uses it as a heat source. The heating efficiency of the wastewater is high in the contact condensation mode in which the evaporation tank is transported in the air, and scale is not generated.

It is a multi-effect evaporator in which the arrangement of evaporation facilities is connected to an evaporator and a heat exchanger. It is a high-efficiency device for partially condensing the generated steam and forcibly circulating the generated steam for self heating.

Since glycerol has a calorie value of 4,320 kPa / kg, the sludge absorbed in glycerol is directly enriched and fueled with incombustible liquid and incinerated.

The odor generated during the evaporation of the wastewater is incinerated, so it is an efficient energy utilization method that produces complete treatment, uses low-cost fuel, and produces superheated steam using incineration waste heat.

There is considerable heat in the condensate condensed by the steam, so it can be used as heating heat in vinyl houses and distilled water can be used as agricultural water.

1 is a systematic diagram of the present invention.
2 is a flow chart of the present invention.
3 is a configuration diagram of the evaporation system of the present invention.
4 is a configuration diagram of a heat supply system according to the present invention;

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a schematic view of the present invention, in which pulmonary steam is circulated through a superheater 400 and an evaporator 100 to transfer heat to wastewater to evaporate wastewater, and vapor to be vaporized is condensed in a cooler 300 to be recovered On the other hand,

FIG. 2 is a flow chart of the present invention in which wastewater is mixed with glycerol 130 and evaporated, so that sludge in wastewater is absorbed by glycerol 130 and treated.

FIG. 3 is a view illustrating a structure of an evaporation system according to the present invention. In FIG. 3, steam is evaporated and heated by the heat exchanger 200 and the cooler 300 while the wastewater is heated by the superheated steam 420 in the evaporator 100.

The lower end of the evaporator 100 is a thickener 120 filled with glycerol 130 and circulates the glycerol 130 to the circulation pump 150 so that the waste water flowing into the supply pump 210 is mixed and absorbed by the mixer 140 and,

The upper end of the evaporator 100 is provided with a plurality of nozzles 151 to spray the wastewater mixed with the glycerol 130 so as to cross the superheated steam 420 rising to the upper end of the evaporator 100,

The circulating steam is overheated at 350 ° C or more in the superheater 400 and the superheated steam 420 is in contact with the wastewater absorbed in the inner space of the evaporator 100 and the outlet temperature of the evaporator 100 is about 120 ° C And the waste water is evaporated.

The water is evaporated and the glycerol 130 flows into the concentration tank 120 where the sludge in the wastewater is absorbed and concentrated. The concentrated sludge is continuously and continuously supplied with the glycerol 130 Respectively.

The cooler 300 condenses the vapor to be evaporated into cooling water, where the separated odor gas is lifted up and discharged to the exhaust blower 320. Relatively heavy humid air flows downward, separated from the treated water in the separating wall 310, Blower 330, respectively.

4 is a diagram illustrating a heat supply system according to an embodiment of the present invention. Referring to FIG. 4, a superheater 400 and a boiler 450 constitute a superheater 300. The superheater 300 superheats circulated pulmonary steam and the boiler 450 warms the glycerol 130 Or conveys heat to the thickener (120).

An air box 430 is installed at the front end of the superheater 400 to supply the secondary combustion air and supply the malodor gas to the periphery of the combustion air to burn the malodorous gas in the combustion chamber 410. The superheated steam 420).

100: Evaporator 110: Evaporator
120: Enriched tank 130: Glycerol
140: Mixer 150: Circulation pump
151: nozzle 200: heat exchanger
210: feed pump 300: cooler
310: separating wall 320: exhaust blower
330: Circulating blower 351: Air inlet
400: superheater 410: combustion chamber
420: superheated steam 430: air box
450: Boiler

Claims

The evaporator 100, the heat exchanger 200 and the cooler 300 constitute an evaporation facility and a part of the steam evaporated in the waste water is circulated to overheat the superheater 400 and the superheated steam 420 to the evaporator 100 The water in the wastewater is evaporated, and the sludge is fed to the glycerol 130. The water is evaporated in the wastewater by absorbing and spraying the glycerol 130 into the wastewater flowing into the wastewater. And the odorous gas generated during the evaporation is incinerated in the combustion chamber (410) of the superheater (400).

The method according to claim 1, wherein the lower end is composed of a thickener (120) filled with glycerol (130) and an upper evaporator (110), and superheated steam (420) is used as a heat source. ) And the wastewater flowing thereinto are mixed with the mixer (140) and sprayed at the upper end thereof, so that the evaporator (100) which crosses the superheated steam (130)

2. The method according to claim 1, wherein cooling water is injected into the steam evaporated in the evaporator (100) to condense the steam, the light odor gas out of the steam generated in the steam upwardly flows and the heavy wet steam flows downward, A cooler 300 configured to be separated into a blower 330,

The superheater (400) according to claim 1, further comprising a combustion chamber (410) for burning offensive odors, and a superheater (400) configured to generate superheated steam by heating the circulating steam to the outside,