JP2001286731A - Method for treating injurious substance contained in exhaust gas as global environment conservation countermeasures, waste disposal method and rational economic system for cycle-oriented society - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for minimizing a burden to be borne on global environments and Japanese economy as countermeasures for injurious substances such as dioxins generated mainly by waste disposal. SOLUTION: Injurious substances such as nitrogen oxides, sulfur oxides and dioxins contained in an exhaust gas are decomposed by the action of a photocatalyst. Alternatively, a variety of wastes are solidified at normal temperatures using a silica hydraulic coagulating agent to obtain an inorganic molding for reuse.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for recycling waste at room temperature without using heat from fossil fuels, a method for detoxifying harmful substances such as dioxins, and a method for these. It relates to a rational regional recycling economy system used.

[0002]

2. Description of the Related Art CO
_2. Current Situation of Suppression and Dioxin Countermeasures Currently, the largest factor of abnormal weather such as heavy rain, typhoon, earthquake, drought, etc., which is increasing worldwide, is CO ₂ (carbon dioxide), and CO ₂ suppression is urgently needed. Although measures for this have been negotiated by the CO ₂ international conference, CO ₂ is intended to be caused by use of fossil fuels is the energy source which is not essential to economic activity, uniform for countries around the world with economic disparity International laws and regulations have created many inconsistencies and are considered to be practically impossible, and it seems that a policy for international adjustment of CO ₂ emissions by overseas resale of CO ₂ suppression technology seems to have been established. . International standards for CO ₂ emissions are 1990
The goal is to reduce annual emissions by 5%.

Conventionally, the energy of human economic activity has been dependent on fossil fuels. In particular, during the industrial revolution that shifted to the machine industry using fossil fuel energy in the early 1800s (about 200 years ago), human economic activity was Has achieved rapid growth.

[0004] However, in the history of mankind, the use of fossil fuels has achieved abundant economic growth in a very short period of time, but on the other hand, it has caused abnormal weather that not only pollutes and destroys the natural environment but also poses a danger to human survival. It is a fact of the day that disasters have occurred and disasters have occurred one after another all over the world.

Namely, fossil fuels, indispensable to human economic activity as described above also, the convenience of the half, NO X _(nitrogen oxides), emissions and hazardous substances such as SO X _(sulfur oxides), C
It has surfaced that many negative substances, which cause global warming and cooling due to O ₂ emission, have surfaced, and the adverse effects on the global environment where humans survive have been revealed. C contained in exhaust gas emitted from the use of petroleum fuel or generated by waste incineration
O ₂ , C (carbon), NO _X , SO _X , chlorine compounds, etc.
Not only does it cause air pollution, but it also accumulates in the stratosphere and blocks heat radiation, causing global warming and cooling due to the greenhouse effect, which can cause heavy rains, droughts, typhoons, Disasters such as earthquakes occur frequently. The development of countermeasures against this problem is urgently needed and is one of the biggest issues in modern society.

Originally, CO ₂ (carbon dioxide) was appropriately balanced in the natural environment of the earth by the photosynthesis of forest plants (absorbing carbon dioxide and discharging oxygen), but rapid economic growth The ecological balance of nature has been disrupted due to deforestation caused by deforestation and the vicious cycle of the food chain caused by acid rain.
It has led to today's extreme weather.

[0007] Such global and global CO ₂
Among the problems, Japan is in proportion to the rapid growth to the economic powerhouse in just 40 years less than after the Second World War, CO ₂ emissions even more. In particular, in the narrow Land, Japan, that the household waste and industrial waste processing was no other than to rely on the incineration of fossil fuel dependency has spurred the CO ₂ emissions.

Further, under the above-mentioned background, regarding the nitrogen oxides and sulfur oxides in the exhaust gas, the current state of acidification of rainfall in Japan is about pH 4-5 on a national average. However, in the Kyushu area, a measurement result of pH 4 was 19
It was announced in 1999.

The stable value for ecosystems (organic matter) including humans is pH 7 (neutral), but at present, the acidification of pH 4-5 has already been started. Decomposition / corrosion has occurred, and a particularly frequent adverse effect is crystal decomposition of weak alkaline concrete in buildings (crystal transition by acidification). The pH 4 in the Kyushu area is a value that is lower than the neutral pH 7 by more than 3.
In the case of two, even the survival of organic life forms is in danger.

[0010] Furthermore, among the various wastes, animals and plants,
In particular, since a large amount of dioxin-generating substances, which are the most harmful chlorine (Cl) compounds to humans, are contained, highly toxic dioxins are generated by incineration of wastes (industry and daily life). In Japan, the dioxin problem surfaced in December 1996, and high-concentration dioxin emissions from a municipal incinerator in Nose-cho, Osaka were discovered. In addition, high-concentration dioxin from incineration of industrial (especially construction) waste in Tokorozawa, Saitama Prefecture was also discovered. Emissions were discovered. This is a problem facing the danger of extinction of the Japanese people. In 1999, the Ministerial Meeting of the Government of Japan stated that Japan was responsible for the world's highest level of dioxin emissions and that dioxin was a serious measure against the danger of extinction of the Japanese people. Regulatory legislation has been set.

[0011] Dioxin generated in the incineration process is scattered around the incinerator, penetrates into the surrounding soil, pollutes groundwater and animals and plants, and also contaminates the living environment of humans due to the chain, which has an adverse effect on the human body. The Ministry of Health and Welfare examined the effects of environmental hormones on the human body, which were tentatively named environmental hormones. One of three young people in their twenties in Japan impaired reproductive function, Turned out not to be born. Dioxin, which is the cause of this, is not a substance generated by mutation, but a substance that has been released for many years.
It is no exaggeration to say that this is one of the biggest factors that has caused the arrival of the aging society.

[0012] Dioxin is produced at 350
When it reaches a temperature of ℃ to 400 ℃, it is generated by the thermal decomposition of chlorine compounds in waste, and the chlorine compounds have been used as one of the most important substances in human living environment. Compound. A typical example of the use of chlorine compounds is as a self-extinguishing substance, a substance coated on the surface of a flammable substance in a human living space or a space where a fire can occur (in a car, etc.), and especially the surface of an organic printed matter such as paper. It is widely used as a coating material.

More specifically, building interior materials (walls, floors),
Color printing paper, synthetic building material printing surface coat, and the like,
In addition, it is widely used. The most indispensable application is the use as a covering material for electric wires, which are likely to catch fire. By being used for this purpose, you can live your life with peace of mind. This chlorine compound having self-extinguishing properties is used in many daily necessities by subjecting a PVC raw material obtained by mixing a chloride to a resin (flammable oil) to secondary and tertiary processing according to use.

[0014] In addition, liquid PCBs and non-combustible oils, which are other substances, are also dioxin generators, and they are difficult to take countermeasures as sources of environmental hormones.

[0015] In October 1991, the Recycling Law was enacted. Guidance to related industries was promoted in related ministries, and many research groups were established by academics for countermeasures. Industry, government, and academia have worked together, but the dioxin problem suddenly emerged in the process. The Ministry of Health and Welfare, which is the administrative agency in charge,
It has been promoting the installation of a high-temperature melting furnace capable of burning at 00 ° C, and has been presenting it to local governments several years ago. In Japan, where the land is small, there is no underground landfill for a huge amount of waste, the traditional landfill around the city has already reached its limit, and there is no domestic waste disposal site in each municipality. Although it was difficult to take measures against garbage, the government and the government concluded that burning at high temperatures (1300 ° C to 1400 ° C) would not generate toxic dioxins, and the government and government should implement complete incineration of garbage. As a result, Japan decided to solve the difficult problems that Japan has today.

Although the solution of the enormous household waste disposal problem has come to light by installing a high-temperature melting furnace, many problems are involved in installing a high-temperature melting furnace, and in particular, in the current situation of the Japanese economy,
Early installation in all local governments, including the provision of installation funds, is entirely borne by the public and is virtually impossible. In addition, the main source of dioxin is not domestic waste but final incineration of industrial waste. As a countermeasure, it was decided to use high-temperature melting furnace treatment as well, and since October 1999, the Ministry of Health and Welfare and the Ministry of Construction have led and notified all related industries, but the related industries have And are in danger of disappearing.

The installation of the high-temperature melting furnace and the problems associated therewith will be described below in (1) to (6).

(1) Waste amount and high-temperature melting furnace installation costs Under the direction of the Ministry of Health and Welfare, which is to install one high-temperature melting furnace for household waste disposal in four cities, each municipality is currently examining the installation. However, the choice of the location is inconsistent with the inhabitants of each of the four cities, and it is difficult to proceed.

For every 100,000 inhabitants, the amount of waste
g / person average 100 tons / day, melting furnace price 10
Assuming 0 billion yen, 1226 municipalities (city, ward, county, town,
The number of incinerators installed in the village is one-quarter, or 307 units. In Japan as a whole, 120,000 tons of garbage is discharged daily (1 kg / person x
120 million people = 120 million kg), incinerator facility burden 12 trillion yen (100 million yen per 100,000 population, 100,000 yen per person, 100,000 yen / 1 person × 120 million
This is the cost of installing a municipal high-temperature melting furnace for household waste, and if we estimate the same amount for incinerators for business and industrial waste, a total of 24 trillion yen will be required for installation funds. Extrusion is required.

In addition, the cost required for dismantling and removing the existing furnace is required in accordance with the installation of the new furnace. This is equivalent to 2 billion yen x 1226 local governments, assuming that one city is a municipal government and each city has a dismantling and removal cost of 2 billion yen (refer to Nose Town, Osaka Prefecture).
It will be 2,452 billion. If the dismantling and removal of the existing industrial waste furnace is estimated to be about 3.5 trillion yen, an estimated total of 30 trillion yen will be the cost required for the new high-temperature melting furnace.

The costs for the construction of the new high-temperature melting furnace are set aside by the tax burden of the people as an environmental measure tax, and, for example, by setting up a public-private investment company for environmental measures, in the era of bank deposits equal to zero interest rates. Even if the company raises funds as a high dividend and guarantees principal, it will take several years from the generation of funds to the start of melting furnace construction. Under the current situation where the Japanese economy continues to decline, it is extremely difficult to realize it early due to the above-mentioned location problems.

[0022] (2) was determined by the current 1999 fiscal year the Council of Ministers of dioxin measures, CO _2, by law revision related to dioxin measures, not only the dioxin emissions companies (final processing industry, including industrial manufacturers, the construction industry, the demolition industry ) Will be enforced in January 2000.

In response to the enforcement of laws and regulations, all target industries cannot maintain their business unless they take measures based on the regulations, and in the absence of a high-temperature melting furnace, the Japanese economy will be virtually stopped. It's not too much to say. As described above, dioxin-generating substances (PVC, PCB) and products using the same are used in most products in human living space.

Among the wastes having a huge amount and a large number of items, industrial process wastes are obliged to dispose of at the responsibility of each industry, and the industry is struggling with measures.

[0025] In addition, general waste called household garbage (average of 1 kg discharged per person) is incinerated as a responsibility of each local government. However, there is a problem of raising funds for installing the high-temperature melting furnace described above. Conventional processing is continued until installation, but there is a problem with the processing of the residuals. The conventional treatment is low-temperature treatment, so the amount of incombustibles remaining is enormous, and measures have been taken by land reclamation in the sea.However, the problem of marine water pollution has surfaced, and ocean dumping has reached its limit. is there. For this,
Each municipality is working on a management-type temporary storage process, but this is a measure to dispose of residual garbage, the dioxin problem has not been solved, and each municipality is also struggling under laws and regulations.

(3) Dioxin-generating substances and social characteristics The most important thing in measures against dioxins is measures against consumed products. Examples include home appliances, telephones, personal computers,
There are amusement equipment for children such as pachinko machines, automobiles, etc., but construction waste is the largest. This wide variety of waste is direct waste in close contact with consumers (consumers), and the conventional treatment of spent waste other than construction waste (called oversized garbage) includes waste in each region. Although incineration and landfills have been conducted in the final processing industry, under the strict dioxin laws and regulations, products that cause dioxin generation are inevitably taken over, and all products are taken over by the industry (manufacturer). Taking action is required.

[0027] (4) Waste logistics country is narrow to the measures, there is no landfill, anticipation of future trends in our country, further under the purpose of the CO ₂ measures is a worldwide abnormal weather cause, industrial manufacturers As described above, the dioxin problem suddenly emerged in December 1996 when more than eight years have passed since the central government issued the Recycling Law in October 1991 as described above. Originally, each industry should have already completed measures for each company's products, but as a result of pursuing only profits as a national policy, measures were delayed and subject to today's laws and regulations, That is the current situation. Among them, first, the recycling cooperative research group established by each manufacturer (people's association) collects, temporarily stores, and is considering measures with the final processing industry. ).

Conventionally, each product is distributed by a manufacturer → a wholesaler →
Local retailers → consumers → oversized garbage → municipalities and regional final processing industries were once distributed, but in the future they will be round-trip, and round-trip distribution in economic arteries will double traffic panic and vehicle emissions, transportation costs Causes a doubling of 20
With the enactment of the law in January 2000, it is expected that the Japanese economic system will be greatly affected, and that a further economic vicious cycle will be accelerated.

(5) Market economy after the implementation of the Dioxin Countermeasures Law The above problems (2) to (4) during the period until the establishment of the high-temperature melting furnace installation fund and the establishment of the installation site in the above problem (1) are realized. The chained market economy is cut off with the enforcement of the law,
Through trial and error, both industries and consumers have transitioned to degeneracy and disappearance (economic collapse), the market economy has created a vicious circle, and as a result, the Japanese economy has collapsed, and from Asia the world economy has collapsed. It is also possible to expand. The dioxin and CO ₂ problems that Japan currently has are linked globally, and the biggest cause is human economic activity.

To give an example of the vicious cycle of the market economy, the basics that support human life are housing, food, and clothing, but "habitation" is most closely related to the generation of dioxin. The products related to dwelling are the above-mentioned products in buildings and self-extinguishing products without fire ignition. The main products are PVC (vinyl chloride resin) products, and vinyl chloride products such as building interior materials and flooring materials. In addition, the surface coating material of artificial coloring is also treated with vinyl chloride coating, and the target products are infinite.

The flow of the market economy of these products has been
Manufacturer → Consumer → Final treatment (incineration, landfill), in the case of construction, demolition and new construction waste → Final treatment (incineration,
Landfill). To date, CO ₂ and dioxin have been generated in the “incineration and landfill” flow of this conventional treatment. However, measures to control CO ₂ and dioxin legislation require expensive high-temperature melting furnace installation. If mandatory, the final processing industry, which is a regional SME, will be forced to raise funds,
Business profits and losses will not be balanced, and most will be shut down under strict laws and regulations.

Prior to that, as a necessary consequence, the dioxin-generating substances are not taken over, and furthermore, the business is closed, and the market economy is inevitably disrupted. Must be disposed of by the manufacturer (production side).

In January 2000, dioxin laws and regulations began in the final processing industry and were imposed on all related industries, including manufacturers (producers), and the market economy in all industries was disrupted. Consumers and the government may respond to this, and the Japanese economy may enter a further vicious cycle. However, the January 2000 legislation as a measure against toxic dioxins was at the expense of such a market economy. It aims to avoid the danger of extinction of the Japanese people.

(6) As a final treatment of high-temperature melting furnace, dioxin and CO ₂ waste as a whole, the cost required for the high-temperature melting furnace designated for dioxin countermeasures and the problem of installation location,
The main points of the market economy problems that the industry and consumers will encounter before the installation is completed are described in the above problems (1) to (5). Whether it is effective for measures against dioxins and CO ₂ will be discussed below.

An example of one high-temperature melting furnace is as follows.
The incineration facility for household waste with a population of 100,000 has a daily throughput of 100 tons, and is a target for combustible and non-combustible waste that must be continuously injected into the incinerator. In the case of treatment (even if separation is performed, the same applies to dioxin generation products because high-temperature treatment is specified), the waste inlet is at room temperature, and
The temperature to the incineration point in ° C must be calculated as the gradient temperature. Therefore, in the temperature difference from the charging port to the melting point, when the temperature reaches 350 ° C. to 400 ° C., dioxin is continuously generated. Gasified dioxin is
Check is higher discharged together from melting furnace chimney CO 2 _(carbon dioxide). Further, even if a chlorine compound is separated in a dust collection facility and combined with other substances, CO ₂ cannot be removed, and CO _{2 in} the atmosphere further increases, which is contrary to international law on CO ₂ control. .

In other words, the installation of a high-temperature melting furnace as a measure to avoid the actual situation in Japan where the land is narrow and there is no landfill, the load on the Japanese economy and the load on the global environment are too large.
Nor can Japan fulfill its international responsibilities.

[Purpose of the Invention] The present invention has been made in view of the above-mentioned circumstances, and its purpose is to solve the above-mentioned various problems that Japan currently has. B. Technology for treating harmful substances in exhaust gas Waste treatment technologies and C.I. It is to provide a new economic system for a recycling-oriented society.

[0038]

According to a first aspect of the present invention, there is provided a method for treating harmful substances in an exhaust gas, comprising: flowing the exhaust gas into a gas processing apparatus having a photocatalyst fixed to an inner wall; It decomposes harmful substances such as nitrogen oxides, sulfur oxides, and dioxins in exhaust gas by the action of a photocatalyst to render them harmless.

An exhaust gas treatment apparatus according to a second aspect of the present invention is an exhaust gas treatment apparatus for treating harmful substances in exhaust gas, which has a tubular body having at least one bent portion. A photocatalyst is fixed to the inner wall, a light source lamp is installed on the inner wall inside the bend of the bent portion, and while irradiating light to the photocatalyst with the light source lamp, an exhaust gas is caused to flow through the tubular body, so that the It is characterized by decomposing harmful substances such as nitrogen oxides, sulfur oxides and dioxins to make them harmless.

The waste treatment method according to claim 3 is characterized in that the waste is solidified at normal temperature with a silica-based water-curable coagulant to form an inorganic molded product, which is then reused.

According to a fourth aspect of the present invention, there is provided a waste treatment method comprising: solidifying a dioxin-containing waste at room temperature with a silica-based water-curable coagulant to form an inorganic molded product; and fixing a photocatalyst on the surface of the inorganic molded product. It is a feature.

According to a fifth aspect of the present invention, there is provided a circular economy system using the method according to any one of the first, third and fourth aspects.

[0043]

DETAILED DESCRIPTION OF THE INVENTION Exhaust gas harmful substance treatment technology Issues of the above harmful substances in exhaust gas, especially NO in exhaust gas
_The present invention provides a means for solving the problem of acidification of rainwater caused by _X or SO _X by utilizing the photocatalytic function of titanium oxide or the like described later by applying the technology invented earlier by the inventor and obtaining a patent. This is the technology that performs the processing. Specifically, a gas treatment device is installed at an exhaust gas outlet or the like, and NO _x (nitrogen oxide), S
O X _(sulfur oxides), in which decompose harmful substances such as dioxin and C (carbon), to remove dust, and wherein the discharging as a normal air which does not cause air pollution. Alternatively, it is characterized by capturing, decomposing, and removing harmful substances in the atmosphere.

It should be noted that the exhaust gas referred to in the present specification refers to all gases containing some harmful substances and adversely affecting the human body and the environment. Gas generated from factories, vehicles, general households and the like, and gas generated when various kinds of wastes are treated, but are not limited thereto.

The exhaust gas treatment technique of the present invention includes the title "Invention of a tunnel interior material made of an inorganic sheet and a method of manufacturing an inorganic sheet for a tunnel interior material", which was invented by the inventor and filed for a patent. (Application on October 8, 1998,
The photocatalyst technology described in Japanese Patent Application No. 10-286331 is applied.

A photocatalyst is a photocatalyst that emits light (excitation light) having an energy (ie, shorter wavelength) larger than the energy gap between the conduction band and the valence band of the crystal. It refers to a substance that can generate conduction electrons and holes by electronic excitation (that is, photoexcitation) in the electronic band. The strong reducing power of electrons generated by photoexcitation and the strong oxidizing power of holes are used for decomposing organic substances and decomposing water.

Among the photocatalyst particles, titanium oxide (TiO ₂ ), which is the most safe for the human body, is preferably used. As the titanium oxide, anatase type titanium oxide or rutile type titanium oxide can be used. It is particularly preferred to use large titanium oxides. For example,
Sakai Chemical's SSP-25 equivalent product (specific surface area 270m ² /
g, X-ray particle diameter 9 nm). Antibacterial metals such as silver, copper, and zinc and / or coloring pigments can also be added to such titanium oxide. Conventionally known pigments can be used. Further, a platinum group metal such as platinum, palladium, ruthenium, rhodium, iridium, and osmium can be added alone or in combination of two or more. By adding a platinum group metal, the redox activity of the photocatalyst can be enhanced, and the decomposability of organic contaminants and toxic gases and odors can be improved.

As the power source used for photoexcitation of the photocatalyst, lighting in tunnels such as high-pressure sodium lamps, low-pressure sodium lamps, metal halide lamps, fluorescent orange lamps, mercury lamps, fluorescent mercury lamps, headlight lamps of automobiles, and sunlight are used. it can.

The photocatalytic function described above uses a light source (excitation light) to reduce NO _x and SO _x in exhaust gas by one.
It decomposes by 00% and also decomposes organic matter in the smoke.
Even if C (carbon carbon) and dust adhere, the adhesion is weak,
Can be transferred by blast. It has been proven in the Netherlands and Sweden that the titanium oxide photocatalyst has a function of decomposing even a high concentration of dioxin.

The following are examples of applications of the present technology.

[Application] 1. For waste incineration facilities (1) New high-temperature melting furnace chimney (2) Existing incinerator chimney 2. For petroleum fuel utilization facilities and industrial facilities (1) Boiler chimneys for water boilers in accommodation facilities and hotels, etc. (2) Chimneys for industrial heating furnace, catalyst industry, ethylene cracking furnace, nitric acid production, etc. For petroleum fuel-based transportation engines and power plants (1) Exhaust gas exhaust chimneys for power ships using heavy oil and light oil (2) Light oil and diesel vehicles (freight vehicles, route vehicles, etc.)
3. Exhaust gas exhaust system (muffler) (3) Exhaust gas exhaust system (muffler) for vehicles using petroleum fuel (for land transportation vehicles, private vehicles, and commercial vehicles) For living area (animal and plant affected space) exhaust gas countermeasures (1) Outdoor use: Purification of air in traffic congested areas (intersections, parking lots, etc.) (2) Indoor use: Houses, offices, hospitals, nursing homes and other public facilities Purification of air of B. Waste treatment technology In the present invention, one of the means for solving the above-mentioned CO ₂ and dioxin problems is proposed without using incineration treatment with fossil fuel as a means for waste treatment.
The aim is to make the product into an inorganic molded product at room temperature and to recycle it into valuable products according to the application. By achieving such room temperature recycling, generation of CO ₂ and dioxin is eliminated.

The normal temperature treatment method of the present invention is disclosed in Patent Document 19, Patent Application Publication No. 1949990, filed on July 10, 1995 by the inventor of the present invention, and entitled "Pumping of Solidified Molded Product." Method, "dated December 20, 1996, Patent No. 2123706, title of invention" High-speed stirrer ", dated February 13, 1997, patent No. 2,607,899, name of invention" Casting equipment ”, Heisei 1
Patent No. 2889995, dated February 26, 2001, title "Tiles" of the invention, dated September 24, 1999, patent No. 298
No. 1597, title of invention "Concrete formwork, structure using this concrete formwork, and method of manufacturing structure"
Etc.). However, if all enormous amounts of waste are treated at room temperature, recycled products will be enormous in quantity and type, and this will affect existing industries and the already established global economic system. With a focus on measures to address the dioxin problem that has occurred in Japan, with a focus on measures against dioxins generated during incineration and measures against harmful substances (CO ₂ , NO _X , SO _X, etc.) in exhaust gas from conventional incinerators. Solve the problem.

In the normal temperature treatment method of the present invention, the silica-based water-curable coagulant (100 in total) according to the invention of the present inventor is used.
In weight parts, 30 to 45 weight parts of silica is contained as a main component, and at least 20 weight% of the total silica is
Preferably, at least 35% by weight is ultra-fine silica having a particle diameter of 1 μm or less, which contains various metal oxides and calcium as other components. And / or stone is added as an aggregate, water is further added, vacuum stirring is performed, and the mixture is poured into a mold or the like according to the purpose and cured at room temperature by stationary curing to obtain an inorganic molded product.

In the room temperature treatment technique of the present invention, the photocatalyst such as titanium oxide (TiO ₂ ) is uniformly distributed and fixed on the surface of the inorganic molded product, so that the safety can be further improved. .

For example, a paint containing a photocatalyst as a main component is previously applied to the inner wall surface of a mold, and an aggregate and water are added to a water-curable coagulant and the mixture is vacuum-stirred and poured into the mold (coating thickness of the paint). (Approximately 0.1 mm to 2 mm), and cured at room temperature by static curing to obtain an inorganic molded product. According to this method, when the vacuum stirrer is poured into the mold, the ultrafine silica particles enter and fix between the photocatalyst particles on the inner wall surface of the mold, so that a large number of photocatalyst particles are firmly attached to the surface. Thus, deterioration of the activity of the photocatalyst can be significantly prevented.

Alternatively, after the inorganic molded product is formed, the above-mentioned paint may be applied by a method such as spraying.

As a preferred embodiment of the present processing technique,
Patent No. 1949890, patented earlier by the inventor, titled "Method of Casting Solidified Molded Product", September 2, 1999
On the 4th, Japanese Patent No. 2981597, one described in the title of the invention, "Concrete Formwork, Structure Using This Concrete Formwork, and Method of Manufacturing Structure" can be used. That is, for example, a reinforcing bar is assembled at a place where a structure is to be formed, and two plate-like inorganic molded articles (one or both of these two sheets, if necessary, are combined with a design plate having a design on the surface. ) Is fixedly connected in parallel to this rebar with a fixed width to form a formwork, and a mixture of aggregate and water in a water-curable coagulant between the two design plates or between the design plate and the panel. This is a method of filling and solidifying at room temperature to complete a structure (hereinafter, this is referred to as a formwork method).

Conventional incinerators containing dioxins (eg, municipal incinerators or incinerator ash for final treatment of industrial waste and surrounding soil) can also be safely treated using the above-mentioned ordinary temperature treatment method. That is, the dioxin-containing waste may be used as an aggregate to form an inorganic molded product (including an irregular shaped product such as a granular material) in the same manner as described above. In the case of dioxin-containing waste treatment, it is particularly preferable to perform the photocatalyst coating treatment in order to ensure safety.

Further, by utilizing the above-mentioned technique,
As of January, dioxin soil around incinerators stored in sandbags under the jurisdiction of the Environment Agency and waste incineration dioxin-containing residue can be converted into inorganic molded products and used for public works. Become.

Treatment of dioxin-impregnated soil around incinerators;
One embodiment of the reuse is described below, but the present invention is not limited to this.

(1) Dioxin-impregnated soil around the incinerator is excavated by about 1 m, and the above-mentioned ordinary temperature treatment is performed at the site without moving the soil from the site. For the purpose of preventing adverse effects on the surrounding crops due to dioxin-containing groundwater contamination, an underground pollution prevention wall of about 2.5 m underground is installed at a position at a certain distance from the incinerator using the formwork method. A photocatalyst coating process is performed inside the mold.

The excavated soil from the defensive wall to the incinerator was placed on the excavated site using the above-mentioned detoxification method using a soil excavation device having a titanium oxide photocatalyst function, which is being separately developed and prototyped by the inventor. For the purpose of neutralization of acidic soil, the mixed soil with an alkaline substance (eg, lime, ammonia) is formed on the backfill, and the backfill is performed to form normal organic soil.

(2) The excavated dioxin-impregnated soil residue is removed from the residue, mixed with a water-hardening coagulant at the excavation site to form an inorganic molded product, or according to the intended use. After transporting the quantity to the destination by a scattering / fall prevention vehicle, it is mixed with a water-hardening coagulant to form an inorganic molded product.
Sidewalk curbs, barriers, fences, river embankments, park monuments,
Landscape material). In addition, there are endless applications to public works.

To date, natural resources such as natural stones or general cements containing calcium (Ca) as a main component have been widely used for all of the above applications.
The acid rain of H4.0 to 4.5 causes a problem that the weak alkaline calcium component is decomposed and eluted, and the Ministry of Construction instructs the industry to take measures against this acid rain. Especially for concrete products used for riverbed embankments,
Decomposition by acid rain causes calcium to elute into the river, precipitate below the surface of the river, and salt due to chlorinated compounds in concrete accumulates at the bottom of the river. The water quality becomes strongly alkaline at pH 11, and this water pollution is caused by animals and plants in the river ( Fish and shellfish and plants).
In 7 years, the Ministry of Construction took measures to ban the use of concrete products in rivers.

Under the above-mentioned background, the present invention compensates for the disadvantages (lack of acid resistance) of general cement, and makes use of the advantages of general cement (market performance and inexpensiveness) to improve the formwork method and the like. It is used to regenerate hazardous waste as acid-resistant inorganic molded products. Furthermore, by imparting a photocatalytic function using titanium oxide or the like to the surface of the inorganic formed product or the mold, the dioxin impregnated material sealed inside the mold leaks outside in the event of destruction due to an earthquake, disaster, etc. However, it is intended to provide a countermeasure technique for ensuring safety by decomposing all harmful substances including dioxin.

C. A rational new economic system for a recycling-based society The consumer self-government and recycling-based social rational economic system of the present invention is a solution to each of the above-mentioned problems by using the manufacturing technology that the inventor has invented earlier and obtained a patent. Along with providing a view of the Japanese economy circumstances, to practice the fundamental principle of the market economy, to establish a position as a global environmental technologies on the basis of the demonstration, as CO ₂ control technology of the Japanese race, the Asia Beginning and providing to the world.

The economic system up to the year 2000 is to produce natural resources scattered around the world as a product material adapted to human economic activities by producing and performing secondary and tertiary processing.
Consumers use through a variety of logistics processes and arterial transportation,
Spent products were incinerated and landfilled by local final disposal companies and local governments as waste. The problems are as described in detail in "Problems to be solved by the conventional technology and the invention".
However, as described in “(5) Market economy after the implementation of the Dioxin Countermeasures Act,” reverse logistics has stopped conventional incineration and landfill in the regional final treatment industry and is responsible for the production of various products. If zero-emissions (recycling of wastes) is achieved through recycling and a recycling-based policy centered on high-temperature melting furnace treatment is implemented, as described in problems (4) and (5), the Japanese economy will be updated further. It is expected that a vicious cycle will accelerate rapidly.

The inventor proposes to utilize the above-mentioned various manufacturing methods, which the inventor has developed and obtained patents, and has already promoted many enlightenment activities and market demonstrations, in the recycling-based social system. In other words, a local recycling cooperative was established in the local consumer municipalities with a focus on waste management.
By establishing a new industrial recycling center as a union business, it is possible to promote the employment of local unemployed people, activate the local economy, and solve the above-mentioned modern problems.

In order to construct the above regional recycling-based economic system proposed by the inventor, feasible manufacturing technology is required, and legislation using this as a national policy leads to early establishment.
In 1999, a national federation of young city municipal councils in support of this initiative launched the National League for Self-Government Environmental Measures. In the local governments of the participating members, a small- and medium-sized enterprise has established a national recycling-based cooperative, and since January 2000 the model has been implemented nationwide, and local practices are underway to promote national policies.

[0070] The intention of this initiative, dioxin by _{incineration,} NO X, and the suppression of SO _X such as toxic substances, the natural environment pollution control by the landfill, further artery (national main motorway) of the consumer spent waste reverse The objectives are to control logistics, reduce the economic burden on consumers, promote the employment of restructured unemployed people, prevent the closure and bankruptcy of related small and medium-sized enterprises, and prevent the disappearance of existing final processing small and medium-sized enterprises. One example is to establish a union organization in the local government's small and medium-sized local industry and a construction waste discharging company, which is a general contractor for civil engineering construction, and in the local government's waste final and intermediate treatment industry.

The basic purpose of the implementation of this concept is not to consider the eco-town plan currently being implemented as an environmental business, but to promote the existing eco-business as a countermeasure against environmental problems. The establishment of this initiative will not destroy the economic system for waste treatment to date, and achieve zero emission of waste treatment in a regional recycling society.
A rational economic system will be promoted.

In order to promote this concept, all prefectures nationwide are divided into blocks, and block lengths in each region are selected from existing final processing companies that agree with the purpose of the present invention. Provide technical guidance for waste recycling based on treatment technology. Each block leader will also appoint one company from the final treatment industry in the city, ward, county, and other regions within the region, and will guide waste separation and recycling. During this promotion, the chief of the city block led the enlightenment activities to encourage participation in the entire final treatment industry in the region, and under the guidance of switching from conventional incineration and landfill treatment to zero-emission intermediate treatment. In addition, by participating as a member in a recycling-based recycling cooperative established on the discharge side within the local government, a local recycling business in which the discharge side and the final treatment side are integrated will be established.

The demonstration of the initial market of the above-mentioned concept is carried out mainly with the disposal of local civil construction waste, and based on this demonstration, the recycling-based recycling cooperative collects and sends final In consultation with each industry for the purpose of recycling spent waste of local consumers who have a duty to dispose, promote local recycling recycling of consumed waste.
This will create a new industry together with industry, promote employment of the unemployed, and establish a rational economic system that realizes waste recycling without imposing a burden on the global environment.

[0074]

EXAMPLES The present invention will be described more specifically below with reference to examples.

A. Technology for removing harmful substances in exhaust gas Fig. 1 (a) shows C (carbon) in exhaust gas emitted from the chimney of a combustion furnace or incinerator and is one of the causes of air pollution.
FIG. 1B is a schematic cross-sectional view of a device having a function of removing dust and dust, and FIG. 1B is a partially enlarged perspective view thereof.

The apparatus shown in FIG. 1 (a) is usually used in the above-mentioned [Application] for 1 (1), (2), 2 (1), (2), 3
(1).

That is, a duct 1 having a horizontal suction function is provided in a chimney projecting from the combustion chamber of a new or existing furnace, and is connected to the vertical cylindrical duct 2 of the apparatus shown in FIG. An upper bearing stay 3a and a lower bearing stay 3b are provided in the cylindrical duct 2, and these upper and lower bearing stays 3a, 3b are provided.
A rotary pipe 4 with a shower port is rotatably mounted between them via a rotary bearing 5. The upper end of the rotary pipe 4 is connected to the water supply pipe 13. The rotating pipe 4 is rotated by a motor 7 via a belt 6. Reference numeral 8 denotes a mount for the motor 7.

The rotary pipe 4 is provided with a plurality of openings 9 at substantially equal intervals in the vertical direction. The opening 9 may be a simple through-hole, but preferably, as shown in FIG. 1B, a shower port 11 is provided at the tip of a bendable spiral nozzle 10 to reduce the angle of the shower water. It can be adjusted freely. Reference numeral 12 indicates a bolt.

A centrifugal dehydrator 14 is provided below the apparatus, and the dehydrator 14 has a dehydrating hole 15. An openable / closable carbon outlet 16 is provided at the bottom of the dehydrator 14.

The dehydrator 14 is connected via a pipe 17 to a filter 18 outside the apparatus. A pipe 19 is connected to the bottom of the filter 18.

In the present apparatus having the above-described structure, the exhaust gas moves in the direction of the arrow, and the carbon and dust in the exhaust gas are separated and move below the apparatus as indicated by the white arrow.

That is, by adjusting the spiral nozzle 10, the shower port 11 is set at an appropriate angle, and the motor 7 is operated to rotate the rotary pipe 4 while water is supplied from the water supply pipe 13 and jetted from the shower port 11. By doing
A water barrier (shower barrier) is formed. Carbon and dust in the exhaust gas rising in the cylindrical duct 2 are separated by the shower barrier.

The carbon and dust fall together with the shower water and are dehydrated by the centrifugal dehydrator 14. The dehydrated carbon and dust are discharged downward from the carbon outlet 16, and the water is sent from the dehydration hole 15 to the filter 18 via the pipe 17, where the water is filtered. The treated water is circulated to the water supply pipe 13 via the pipe 19 as necessary.

The temperature of the exhaust gas is cooled to about 200 degrees by the present apparatus, and is sent to the apparatus shown in FIG.

FIG. 2 shows an embodiment of an apparatus for decomposing harmful substances such as NO _X , SO _X , dioxin in exhaust gas and converting it to a clean gas free from air pollution (hereinafter also referred to as a harmful substance decomposition apparatus). FIG.

The photocatalyst (titanium oxide) is fixed inside the duct 21 bent at three places in the harmful substance decomposition apparatus shown in FIG. 2, and the photocatalyst is irradiated with light, and passes through the inside in the direction of the arrow. The harmful substances in the exhaust gas are decomposed by the action of the photocatalyst.

That is, the duct 21 has first to third bent portions 22a, 22b, 22c, and in each bent portion, the inside of the bent portion is made of a heat-resistant glass cover 23a, 23b, 23c.
c inside the heat-resistant glass cover.
a, 24b and 24c are provided. Further, photocatalyst (titanium oxide) fixing layers 25a, 25b, 25c are provided on the inner wall facing these light source lamps. These photocatalyst fixed layers 25a, 25b, 25c are formed by applying a paint containing titanium oxide as a photocatalyst as a main component and drying.

Further, a fan 28 driven by a motor 27 is provided in front of the outlet 26, and a photocatalyst (titanium oxide, not shown) is similarly fixed to the blades of the fan 28, and light source lamps 29 and 30 are installed. are doing. Reference numerals 31 and 32 indicate a gantry.

In the present apparatus, since the duct is bent, exhaust gas is blown to the wall surface at each bent portion as shown by the arrows, and the exhaust gas and the photocatalyst are sufficiently in contact with each other. Decomposition takes place. Also,
Since the photocatalyst barrier is formed by the rotation of the fan 28 just before the outlet 26, NO _X · SO _X ·
All harmful substances such as dioxin are decomposed.

The small incinerator maker has the oldest track record, and can process 5 tons, 20 tons, 30 tons and 50 tons of Nissan, which is under joint development by Minoru Fujimori, representative of Zippo Industries Co., Ltd. 1 and 2 were attached to three prototypes of small incinerators, and the discharged gas was analyzed. As a result, both NO X _· SO X _· dioxin was confirmed not be detected.

FIG. 3 decomposes harmful substances such as NO _X , SO _X, and dioxin in exhaust gas in the same manner as in the apparatus of FIG.
It is a schematic cross section showing another embodiment of a harmful substance decomposition device.

The device shown in FIG. 3 is connected to a new or existing muffler (exhaust gas device) 41 of [3] (2) and (3) of [Application], so that the vehicle using light oil fuel can be used.
The purpose is to convert exhaust gas from diesel vehicles and the like into clean gas at the exhaust section and to contribute to logistics free from exhaust gas pollution.

The present device is a tubular body having two bent portions, and is connected to a vehicle muffler 41 by a connection belt 42 whose diameter can be adjusted.

A fan 43 and a bearing 44 are provided at the entrance of the apparatus. The surface of the fan 43 is treated with titanium oxide (not shown) as described above. A light source lamp 45 is provided on a wall obliquely below the fan 43.

A photocatalyst (titanium oxide) fixing layer 46 is provided on the inner wall surface downstream (upper in the figure) of the fan. The inside of each bend is constituted by heat-resistant glass covers 47, 48, and light source lamps 49, 50 are provided outside thereof. Reference numerals 51 and 52 indicate reflection mirrors.

In the apparatus shown in FIG. 3 having the above structure, the photocatalytic barrier is formed by the rotation of the fan 43 under the irradiation of the light source lamp 45, and the harmful substances in the exhaust gas are decomposed. Further, under the light irradiation of the light source lamps 49 and 50, the remaining harmful substances are decomposed in the titanium oxide fixing layer 46, and the decomposed gas (processed gas) is released to the outside.

In this apparatus, similarly to the apparatus shown in FIG.
By the combination of the configuration in which the photocatalyst is fixed to the inner wall of the bent tubular body and the fan in which the photocatalyst is fixed to the surface, sufficient contact between the harmful substance and the photocatalyst is performed.

Next, the apparatus shown in FIG. 4 will be described.

[0099] FIG. 4 (a) ~ (d) causes air pollution in Living, in the exhaust gas, _{NO X} · SO X ·
It shows a device 61 (hereinafter, also referred to as a clean box) for decomposing or removing dioxin, dust and the like to make clean gas. The present apparatus is applied to the above [Applications] 4 (1) and (2).

FIG. 4A is a front view of the clean box 61, FIG. 4B is a schematic vertical cross-sectional view, and FIG. 4C is a schematic horizontal cross-sectional view taken along line AA in FIG. Indicates that
(D) shows a schematic cross-sectional view taken along line BB.

As shown in these figures, the clean box 61 is box-shaped and has a suction port 62 at the lower front and a discharge port 63 at the upper front. The outlet 63 is configured so that the wind direction can be adjusted. Reference numeral 64 indicates a fixing bolt, and reference numeral 65 indicates an eave.

Inside the clean box 61, a tubular body 66 having a U-shaped cross section is provided, and a photocatalyst fixing layer 67 is provided on the inner wall of the tubular body 66 on the side facing the front. The inner bent portion of the tubular body 66 is constituted by a heat-resistant glass cover 68, and the outer wall of the box 61 and the tubular body 6 are formed.
A light source lamp 69 is provided in a space between the light source lamp 6 and the light source lamp 6.

A filter 70 is provided inside the suction port 62.
A fan 71 is provided. A filter 72 with a function for each application and a fan 73 are provided in front of the outlet 65. Further, a light source lamp 69 for irradiating the fan 73 with light is provided on a wall surface of the tubular body 66. Titanium oxide (not shown) is fixed on the surfaces of these fans 71 and 73, and these fans are driven by a motor 75.

The clean box 61 having the above configuration
In the above, the harmful exhaust gas discharged from a passing vehicle or the like is sucked through the filter 70 from the suction port 62 by the operation of the fan 71. The filter 70 adsorbs and removes carbon, dust and the like in the exhaust gas.

Dioxin / NO _X in inhaled gas
The harmful substances such as SO _X are partially decomposed by the photocatalyst barrier formed by the rotation of the fan 71,
7 and is largely decomposed by the action of the photocatalyst under irradiation of ultraviolet light by the light source lamp 69.

Further, the remaining harmful substances are decomposed by the photocatalytic barrier caused by the rotation of the fan 73 provided in front of the outlet 63, and are discharged as clean gas in the adjusted wind direction through the filter 72 with a function for each application. You. This suppresses the adverse effects of the exhaust gas on animals and plants in the living area.

Regarding (1) of the fourth application, for example, as shown in FIG. 5, an intersection (or a parking lot) in a traffic congestion area
By installing a plurality of the clean boxes 61 above, a high air cleaning effect can be expected.

Similarly, with respect to (2) of the fourth application, the clean box 61 has the same function as that of the (1) of the fourth application, but has a size set according to the purpose of use indoors, and Wall-mounted type.

The above-mentioned filter with function for use 72 adsorbs and decomposes harmful dust and odorous substances according to the use of the clean box 61. In addition, by impregnating a phytoncide fragrance or adding a negative ion generating function, it is possible not only to purify the animal and plant growth space but also to promote health and healing effects.

B. Waste Recycling Technology (1) Preparation of Inorganic Form Sample Add silica-based water-curable coagulant (“Silica Hard”, LFL Science and Technology Institute) and water to the incineration ash of a conventional incinerator And stirred under vacuum. This is poured into a mold in which a paint containing titanium oxide as a main material is previously applied to the inner wall, left to cure at room temperature for one day, and removed from the mold to a thickness of 10%.
mm plate-shaped sample (50 mm × 20 mm) was obtained.

(2) Evaluation of Physical Properties of Inorganic Form The physical properties such as luminous reflectance of the inorganic form sample obtained as described above were measured. The results are shown below.

(A) Luminous reflectance: 85% (b) Surface hardness (pencil hardness [JIS K5400]):
9H (c) Weather resistance (weatherometer test [JIS K54
00]): No significant change for 1000 hours.

(D) Chemical resistance (5% sulfuric acid, 5% nitric acid drop test [JIS K5400]): No significant change in appearance observed after standing for 24 hours.

As can be seen from these results, it was found that the inorganic formed product of the present invention satisfies the basic performance as a recycled material utilizing waste.

(3) Evaluation of NO _X removal properties of inorganic formed products NO _X removal properties were tested to confirm the photocatalytic effect. The test method and the results are as follows.

When the sample was irradiated with black light while flowing a gas containing 5 ppm of NO _X at 350 ml / min, the NO _X immediately decreased to almost 0 ppm. Further, irradiation was continued for 5 hours, but the NO _X value was 0
ppm remained unchanged. Further, since there was no generation of NO ₂ , it was confirmed that the photocatalyst had an extremely excellent photocatalytic effect.

(4) Evaluation of Dioxin Leachability of Inorganic Form Based on the above-mentioned incineration ash and inorganic form sample, based on the “Leach test” of the test solution preparation method for landfill disposal specified by the Environment Agency Public Notice No. 13. A test solution was prepared, and dioxin elution analysis was carried out based on "Manual for Standard Measurement and Analysis of Dioxins in Waste Disposal" (Ministry of Health and Welfare, Bureau of Health and Welfare, Water Supply Environment Department, Environment Improvement Section, February 1997). For the analysis, a gas chromatograph-mass spectrometer (JEOL's JMS-70) was used.
Type 0, MicroSpec AutoSpec-ULT
IMA type).

The results (total amounts of PCDDs and PCDFs detected) are as follows: Incinerated ash: measured concentration 0.04 ng / L, toxic equivalent (TE
Q) 0.00018 Inorganic molded product: not detected.

(5) Evaluation of measures against dioxin-impregnated soil around incinerator Silica hard and water were added to the dioxin-impregnated soil and mixed to form particulate solids. When a dioxin elution test was performed on this solid in the same manner as described above, no dioxin elution was observed.

C. Consumer autonomy / recycling-type social rational economic system Fig. 6: As described in the section "(4) Logistics for waste countermeasures" in the above-mentioned problems, consumer waste collection processing It is a figure which shows one embodiment of the above-mentioned rational economic system proposed as a countermeasure to the acceleration of the vicious circle of the Japanese economy which arises in the case of.

In FIG. 6, reference numeral (1) indicates a plan view of the whole of the Japanese archipelago, and reference numeral (2) indicates an important transportation route (artery) of the Japanese archipelago.
And the symbol (3) indicates a port call to the Japanese archipelago (circled numbers 1 to 4).
3), and the symbol (4) indicates a crossing traffic route to the Japan Islands important traffic route.

A local recycling-based cooperative is established in the consumer spheres and municipalities throughout the Japanese archipelago to promote the employment of new industries in solidarity with companies. In the present invention which provides a rational economic system for realizing the realization, it is proposed to combine arterial transport and venous transport in an industrial transport system.

That is, in the present system, the warehouse at each port of call (3) on the Pacific Ocean side is mainly used to carry out sorting work by industrial product and crusher work for the purpose of recycling at each port of call. By carrying marine transport using a dedicated cargo ship to transport to a recycling-type recycling cooperative recycling factory (recycling factory for each application), it is possible to reduce the adverse effect on the artery (2) and also to occur in the arterial transport It is possible to prevent traffic congestion, suppress exhaust gas, and reduce economic cost.

Further, in the present system, focusing on the fact that the number of consumers on the Sea of Japan side is smaller than that on the Pacific Ocean side, the spent waste in the Sea of Japan side is located on the crossing traffic route (4) with respect to the central arterial route (2). We propose to solve many problems in transportation by carrying out crossing transportation using the route and delivering it to the port of call (3) via the arterial route.

As described above, according to the regional recycling-based social rational economic system of the present invention, it is possible to minimize the burden on the environment and the economy even if the transport volume increases significantly.

[0126]

According to the first and second aspects of the present invention,
Due to the strong decomposition action of the photocatalyst, harmful substances such as dioxin, NO _X and SO _X in the exhaust gas can be efficiently removed. Therefore, to process the NO X _· SO _X causing dioxins and acid rain that threaten human in origin, can be prevented is discharged to the outside.
In addition, harmful substances in the atmosphere can be captured and decomposed and removed.

In particular, according to the apparatus of claim 2, since the contact between the harmful substance and the photocatalyst is sufficiently performed, a high decomposition effect can be enhanced.

According to the third aspect of the present invention, all wastes including dioxin-containing waste can be recycled without pollution. By recycling, various products related to civil engineering / construction use or "living" can be obtained, and it is possible to substitute for depleted natural resources. In addition, the environmental burden of secondary and tertiary processing in the use of natural resources to date has been eliminated, and it has become possible to shift 70% of Japan's economic resources from foreign dependence to domestic self-sufficiency. Good circulation effect can be obtained.

According to the fourth aspect of the present invention, dioxin generated from an incinerator is confined in an inorganic molded product or reused to reduce the most important problem in Japan, thereby reducing the burden on the people. Can be solved without any problems, and the effect of environmental and economic restoration can be improved.

[0130] According to the recycling-oriented rational economic system according to the fifth aspect, measures against harmful substances such as wastes and dioxins are large for all the nations, citizens, industrial manufacturers, civil engineering construction waste dischargers, and consumers. Achieving zero emissions without imposing economic burdens, reducing the destruction and pollution of the natural environment, and addressing the modern challenges of employment for the unemployed,
Fulfill Japan's international responsibilities on CO ₂ issues.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing an embodiment of an apparatus for removing C (carbon), dust, and the like discharged from a chimney.

FIG. 2 is a schematic cross-sectional view showing one embodiment of an apparatus for decomposing harmful substances such as NO _X (nitrogen oxide), SO _X (sulfur oxide), and dioxin in exhaust gas discharged from a chimney. is there.

FIG. 3 is a schematic cross-sectional view showing one embodiment of an apparatus for decomposing harmful substances such as NO _X and SO _X in exhaust gas discharged from an exhaust gas device (muffler) of a vehicle by using fossil fuel. .

FIG. 4 is a schematic cross-sectional view showing one embodiment of an apparatus for decomposing and removing harmful substances such as NO _X , SO _X, and dioxin in exhaust gas in a living area to produce a clean gas.

FIG. 5 is a plan view showing an arrangement example when a clean box 61 is installed at an intersection.

FIG. 6 is a diagram showing an embodiment of a distribution system in a new industry / regional recycling economic system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Duct 2 ... Cylindrical duct 3a ... Upper bearing stay 3b ... Lower bearing stay 4 ... Rotating pipe 5 ... Rotating bearing 6 ... Belt 7 ... Motor 8 ... Stand 9 ... Opening 10 ... Spiral nozzle 11 ... Shower port 12 ... Bolt 13 ... Water supply pipe 14 ... Centrifugal dehydrator 15 ... Dewatering hole 16 ... Carbon outlet 17 ... Pipe 18 ... Filter 19 ... Pipe 21 ... ducts 22a, 22b, 22c ... bent portions 23a, 23b, 23c ... heat-resistant glass covers 24a, 24b, 24c ... light source lamps 25a, 25b, 25c ... photocatalyst (titanium oxide) fixing layer 26 ... outlet 27 Motor 28 Fans 29 and 30 Light source lights 31 and 32 Stand 41 Muffler (exhaust gas device) 42 Connection band 43 Fan 44 Bearing 4 5 light source lamp 46 photocatalyst (titanium oxide) fixing layer 47, 48 heat resistant glass cover 49, 50 light source lamp 51, 52 reflection mirror 61 clean box 62 suction port 63 Discharge port 64 Fixing bolt 65 Eave 66 Tubular body 67 Photocatalytic (titanium oxide) fixing layer 68 Heat-resistant glass cover 69 Light source lamp 70 Filter 71 Fan 72 By application Filter with function 73: Fan 74: Light source 75: Motor 76: Pulley belt

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 53/36 102C (72) Inventor Masami Abe 1-14-7 Asahicho, Nara City, Nara Prefecture

Claims (5)

[Claims] 1. A method for treating harmful substances in exhaust gas, comprising: flowing exhaust gas through a gas processing device having a photocatalyst fixed to an inner wall, and the action of the photocatalyst;
An exhaust gas treatment method characterized by decomposing harmful substances such as sulfur oxides and dioxins to make them harmless. 2. An exhaust gas treatment device for treating harmful substances in exhaust gas, comprising: a tubular body having at least one bent portion; and a photocatalyst fixed to an inner wall of the bent portion of the tubular body. A light source lamp is installed on the inner wall of the inside of the bend of the bent portion, and while irradiating the photocatalyst with the light from the light source, an exhaust gas is caused to flow through the tubular body. An exhaust gas treatment device that decomposes harmful substances such as dioxin to make them harmless. 3. A waste treatment method comprising solidifying a waste at room temperature with a silica-based water-curable coagulant to form an inorganic molded product and reusing the same. 4. A process for solidifying dioxin-containing waste at room temperature with a silica-based water-curable coagulant to form an inorganic molded product, and fixing a photocatalyst on the surface of the inorganic molded product.
Waste treatment method. 5. A circular economy system using the method according to any one of claims 1, 3 and 4.