JP3213618U - Distillation combustion equipment that renders market wastewater harmless - Google Patents

Abstract

A distillation combustion apparatus for detoxifying waste water from a central wholesale market is provided. A waste water heating furnace 3 for heating the waste water 1 to a temperature in the vicinity of the azeotropic boiling point of benzene to 70 to 80 ° C., and the waste water 1 heated to 70 to 80 ° C. by the waste water heating furnace 3 are flushed. And a distillation column 5 for separating cyan and water, and a combustion furnace 8 for completely burning benzene and cyan collected at the top 6 of the distillation column 5 at a temperature of 900 ° C. or more to convert them into carbon dioxide, steam and nitrogen. The discharged carbon dioxide gas, water vapor, and nitrogen are released to the waste water heating furnace 3 to dissipate heat and assist in the waste water heating, and then discharged from the chimney provided in the waste water heating furnace 3 to the atmosphere. [Selection] Figure 1

Description

  The present invention is designed to render the wastewater of the Toyosu new market harmless.

Permissible reference levels for hazardous substances under the Poisonous and Deleterious Substances Control Law are set as follows.
Benzene In air: 0003 mg / M ^{3 in} water: 0.1 mg / L In soil: 50 mg / kg
Cyan Water: 1-10 μg / L In soil: 50 mg / kg
Since the distribution of harmful substances that have been discarded due to the presence of powder, stones, soil blocks, etc. in the soil is not uniform in terms of breadth and depth, analysis values sampled from one place are considered meaningless.

  By the way, in the Toyosu New Market, which is scheduled to be moved to the Central Wholesale Market on TV and newspapers, it is reported that benzene, cyan, etc. exist in the wastewater. Although it may be uncertain information, the applicant of this application is prepared to face this problem from the front, based on his experience related to more than 80 patent applications and utility model registration applications including the latest patent document 1. Believing this, when the applicant faced this situation, we considered what measures should be taken at this time, and first looked at the main points of the problem in benzene and cyanide in water.

Utility Model Registration No. 3206653

  Benzene and water are sparingly soluble azeotropes. I decided to take advantage of this feature. The boiling point of benzene is 80.99 degrees C, but the azeotropic point with water is 69.25 degrees C. If wastewater from the Toyosu New Market (hereinafter referred to as “Toyosu Wastewater”) is heated to a temperature of about 75 ° C, which is slightly higher than the azeotropic point, the water will not boil, only benzene will evaporate, and harmful substances in the wastewater will be removed. become. The boiling point of hydrogen cyanide is 27.5 degrees C. When Toyosu wastewater is alkaline, it must be neutral to slightly acidic.

The first device of the present invention is a distillation combustion apparatus for detoxifying wastewater in the Toyosu new market containing benzene and cyan, and a wastewater heating furnace for heating the wastewater to a temperature in the vicinity of the azeotropic boiling point of benzene to 70 to 80 degrees C. And flashing waste water heated to 70 to 80 degrees C by a waste water heating furnace to separate benzene, cyan and water, and benzene and cyan collected at the top of the distillation tower at 900 degrees C or higher A combustion furnace that completely burns at a temperature of carbon dioxide, steam, and nitrogen is converted into carbon dioxide gas, water vapor, and nitrogen, and the changed carbon dioxide gas, steam, and nitrogen are released to the waste water heating furnace to dissipate heat to assist in heating the waste water. It is a distillation combustion device that detoxifies Toyosu wastewater, characterized by being discharged into the atmosphere from a chimney.
The second idea is that Toyosu is equipped with a heat exchanger that heats detoxified thermal wastewater stored at the bottom of the distillation tower with cold purified water to produce heated purified water and detoxified warm wastewater. This is a distillation combustion device that renders wastewater harmless.
The third idea is a distillation combustion apparatus for detoxifying the Toyosu wastewater, characterized in that heated water is used as hot water for a bathhouse and detoxified warm wastewater is used to warm a greenhouse.

  According to the “distillation combustion device for detoxifying Toyosu wastewater” according to the present invention, regarding the Toyosu problem that is still straying, a concrete measure to detoxify Toyosu wastewater is put forward to this problem. I think you can.

1 is a general view of a “distillation combustion apparatus for detoxifying Toyosu wastewater” according to the present invention. FIG. Explanatory drawing which illustrated the small experiment by the glass apparatus for the "distillation combustion apparatus which detoxifies Toyosu wastewater" concerning this invention. Explanatory drawing which illustrated the pilot plant of the "distillation combustion apparatus which detoxifies Toyosu wastewater" concerning this invention.

The “distillation combustion apparatus for detoxifying Toyosu wastewater” according to the present invention will be described with reference to the drawings.
First, FIG. 1 will be described.
If Toyosu wastewater 1 is fed into the pipe still 4 in the wastewater heating furnace 3 by the pump 2 and the liquid heated to 70 to 80 degrees C is flushed into the distillation column 5, the cyan benzene is separated from the water. Gather at the top 6 of the tower. This harmful combustible 6V is led to a combustion furnace 8 that maintains a temperature of 900 ° C. or higher, and at the same time, air is fed into the combustion furnace 8 to completely burn it to carbon dioxide, water vapor, and nitrogen.
<Combustion reaction formula>
C ₆ H ₆ + 9O ₂ = 6CO ₂ + 3H ₂ O + 782 Cal / g
8HCN + 20O ₂ = 4H ₂ O + 4CO ₂ + 4N ₂

  Further, after discharging and radiating heat into the waste water heating furnace 3 to assist the heating of the waste water, it is discharged into the atmosphere A from the chimney 9 together with the gas in the furnace. The combustion consumption is 14% when boiling water, and the higher the concentration of combustible harmful substances, the better the thermal efficiency. The 75 ° C. detoxified waste water H7W collected from the tower bottom 7 exchanges heat with the purified water FW. The detoxified warm waste water W7W is discharged after warming the greenhouse 12 and the like.

  Heated clean water HFW from the heat exchanger 10 is used for the Toyosu bath 11. Reference numeral 13 denotes a fireproof wire mesh that prevents a flammable explosion. Reference numeral 14 is a reflux pipe for refluxing and circulating the detoxified heat waste water H7W in order to always keep the liquid temperature at the bottom of the distillation column at around 75 degrees C. Reference numeral 15 is a blower, and reference numeral 16 is an air inlet.

Next, FIGS. 2 and 3 will be described.
FIG. 2 illustrates an apparatus for performing a small experiment with a glass device to grasp the necessary conditions for detoxifying waste liquid.
FIG. 3 illustrates a device for the purpose of producing a pilot plant, which is a small experimental device, and operating it to grasp all conditions necessary for a large plant.
For the measurement of harmful substances, an ion test paper or the like may be used for cyan, a benzene test paper or a portable VOC measurement device may be used for benzene.

  The “distillation combustion device for detoxifying Toyosu wastewater” according to the present invention is expected not only to detoxify Toyosu wastewater but also to put a stone for solving the Toyosu problem. Also, if you are afraid of injury or failure, you can't do anything, failure is a valuable experience, and in the present age when you forget the most important attitude to go straight to the purpose without going through it, I hope that the children who will be responsible for the next new household do not want to be selfish people, want to be dependable, warm and warm people.

DESCRIPTION OF SYMBOLS 1 Toyosu waste water 2 Pump 3 Waste water heating furnace 4 Pipe still 5 Distillation tower 6 Tower top 7 Tower bottom 8 Combustion furnace 9 Chimney 10 Heat exchanger 11 Toyosu bath 12 Greenhouse 13 Fireproof wire mesh 14 Reflux pipe 15 Air blower 16 Air inlet H7W Detoxification Thermal wastewater W7W Detoxified warm wastewater FW Purified water HFW Heated purified water A Atmosphere

The “distillation combustion apparatus for detoxifying Toyosu wastewater” according to the present invention will be described with reference to the drawings.
First, FIG. 1 will be described.
If Toyosu wastewater 1 is fed into the pipe still 4 in the wastewater heating furnace 3 by the pump 2 and the liquid heated to 70 to 80 degrees C is flushed into the distillation column 5, the cyan benzene is separated from the water. Gather at the top 6 of the tower. This harmful combustible 6V is led to a combustion furnace 8 that maintains a temperature of 900 ° C. or higher, and at the same time, air is fed into the combustion furnace 8 to completely burn it to carbon dioxide, water vapor, and nitrogen.
<Combustion reaction formula>
C ₆ H ₆ + 9O ₂ = 6CO ₂ + 3H ₂ O + 782 Cal / g
8HCN + 1 0O ₂ = 4H ₂ O + 8 CO ₂ + 4N ₂

Claims (3)

A distillation combustion device that detoxifies wastewater from the Toyosu new market, including benzene and cyanide,
A waste water heating furnace for heating the waste water to a temperature of 70-80 ° C. near the azeotropic point of benzene;
A distillation column for flashing waste water heated to 70 to 80 ° C. by a waste water heating furnace to separate benzene, cyanide and water;
A combustion furnace that completely burns benzene and cyan collected at the top of the distillation column at a temperature of 900 ° C. or higher and converts them into carbon dioxide, steam, and nitrogen;
Distillation combustion that detoxifies Toyosu wastewater, which discharges changed carbon dioxide, water vapor, and nitrogen to the wastewater heating furnace and releases them into the atmosphere from the chimney provided in the wastewater heating furnace after assisting in heating the wastewater. apparatus.   The Toyosu wastewater according to claim 1, further comprising a heat exchanger for heat exchange of detoxified thermal wastewater stored at the bottom of the distillation tower with cold purified water to produce heated purified water and detoxified warm wastewater. Distillation combustion equipment that makes it harmless.   The distillation combustion apparatus for detoxifying Toyosu wastewater according to claim 2, wherein the heated purified water is used as bath water, and the detoxified warm wastewater is used to warm the greenhouse.

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