GB2366204A

GB2366204A - Deodorization apparatus

Info

Publication number: GB2366204A
Application number: GB0111119A
Authority: GB
Inventors: Pil Soon Han; Chun Deok Jang; Yong Moon Yoo; Chang Mook Lee; Byung Kyun Oh; Kyn Ahm Lee
Original assignee: GAIA CO Ltd
Current assignee: GAIA CO Ltd
Priority date: 2000-05-08
Filing date: 2001-05-08
Publication date: 2002-03-06
Anticipated expiration: 2021-05-08
Also published as: KR20010103212A; KR100352151B1; GB0111119D0; GB2366204B

Abstract

The present invention provides a deodorization apparatus. A steam produced in the process of drying and fermentation and containing bad smell components is passed through an inner space of the preheated members to preheat the steam, and then the preheated steam is introduced and is passed through a space in which the heating means is mounted so that the volatile organic components generating a bad smell can be removed completely by the small quantity of energy.

Description

<Desc/Clms Page number 1> DEODORIZATON APPARATUS The present invention relates to a deodorization apparatus, and more particularly, to a deodorization apparatus in which steam containing bad smell components flows in order in inner spaces of a plurality of members to preheat and then the preheated steam is fed in and is passed through a space in which a heating mean is mounted at a high temperature so that volatile organic components (bad smell components) can be burnt and removed completely.

In a drying fermentation apparatus that is a kind of apparatus for treating food wastes, steam is produced when the food wastes are dried and fermented, volatile organic components are included in the steam. The volatile organic components generate a bad smell and are the origin of the generation of the bad smell that are the point of the drying fermentation apparatus.

A direct combustion method and catalytic oxidation method, etc. are used as a way to get rid of the bad smell components. The direct combustion method oxidizes and resolves the steam (gas) containing the bad smell components at a high temperature (600 C or more), and it can obtain an excellent deodorization effect and can remove various bad smell components such as an inflammable bad smell components, hydrogen sulfide and ammonia so that the direct combustion method has been used generally in a deodorization process.

In general, although a given temperature of a furnace and a time of stay of a steam in a furnace are varied in response to a component ratio and a content of the bad smell components, when a steam containing bad smell components is passed through a heating apparatus, in which a temperature of 700 to 800 C is maintained, for 0.5 second, the bad smell components are burnt and removed.

However, a temperature of the steam produced is about 90 to 100 C, therefore, in order

to keep the steam containing bad smell components in above mentioned temperature condition (700 to 800 C), a large quantity of energy is needed. Consequently, the direct combustion method has many problems in an economic aspect.

The present invention seeks to provide a deodorization apparatus which can solve the above mentioned problem generated in the conventional deodorization apparatus and can obtain an excellent deodorization effect despite a small quantity of energy.

In a deodorization apparatus according to the present invention, a steam produced in the process of drying and fermentation and containing bad smell components is passed through an inner space of the preheated members to preheat the steam, and then the preheated steam are introduced and passed through a space in which the heating means is mounted so that the volatile organic components generating a bad smell can be removed completely by the small quantity of energy.

A deodorization apparatus of the first embodiment of the present invention comprises; a third housing located in a second housing and having a plurality of partition walls for dividing an inner space thereof into a plurality of rooms; a steam inlet pipe connected to said second housing for supplying a steam in a space between said second housing and said third housing; a plurality of heating pipes connected from each other and mounted in said rooms, respectively, each of said heating pipes having a heating means; and a gas outlet pipe connected to the outer heating pipe for exhausting a gas in a state that bad smell components are burnt and removed.

In the first embodiment, a steam containing bad smell component is introduced in a space between said second and third housing via said steam inlet pipe, then flow in said space and is passed through said rooms successively for preheating, the steam exhausted from the last room is introduced successively into the heating pipes via an opening formed at an outer heating

pipe so that the steam contacts directly each heating means and heated, whereby the bad smell components contained in the steam are burnt completely and the steam is changed into a gaseous state.

The deodorization apparatus according to the first embodiment further comprises a first housing located at an outside of the second housing. An additional heating means is provided in a space between the first and second housings and a heat medium oil having an excellent heat conductivity is stored in the space between the first and second housings, whereby an introduced steam in the space is preheated.

In this embodiment, each heating pipe except the both outer heating pipes has a pipe connected to an adjacent heating pipe, thus, the steam introduced into one heating pipe flows in the heating pipe along the entire length and then flows in the adjacent heating pipe, whereby a heat absorb effect can be maximized. Each of heating means used in the present invention is an electrode rod connected to a power supply means or a heating wire wound in a coil shape.

A deodorization apparatus according to the second embodiment of the present invention comprises; an outer housing supported by a supporting frame and having an opening for exhausting a deodorized steam, wherein a space in which a heating means is received is formed between the outer housing and the supporting frame; a third housing being received in the outer housing and having an opening connected to a steam supplying line at a front portion thereof, wherein a space (third space) is formed between the outer housing and the third housing; a second housing being received in the third housing, wherein a space (second space) is formed between the third housing and the second housing; and a first housing being received in the second housing and having a plurality of heating means mounted therein, A space (first space) connected to the second space is formed between the second housing and the first housing, whereby the steam containing bad smell components is introduced

in the second space and then introduced and heated in an inner space of the first housing via the first space, a deodorized and dried steam (gaseous state) is exhausted to an atmosphere via the third space.

The deodorization apparatus according to this embodiment further comprises a casing for receiving a platinum catalyst at a rear portion of the outer housing. The casing has a front opening to which a rear end of the first housing is connected and a rear opening communicated with the third space. Therefore, after the steam is exhausted from the first housing, the steam (gaseous state) is passed through the platinum catalyst in the casing and then introduced in the third space via the rear opening of the casing.

The deodorization apparatus according to this embodiment further comprises an active carbon unit connected to an opening formed at the outer housing. Thus, a gas exhausted from the third pace is passed through an active carbon received in the unit.

For fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in conjunction with the accompanying drawings in which: FIG. 1 is a perspective view of a deodorization apparatus according to the first embodiment of the present invention; FIG. 2 is a sectional view taken along the line A-A in FIG. l; FIG. 3 is a sectional view taken along the line B-B in FIG. 2; FIG. 4 is a graph showing a variation of temperature of the steam when the steam is passed through the heating pipes consisting of the deodorization apparatus according to the first embodiment of the present invention; FIG. 5 is a disassembled perspective view of a deodorization apparatus according to the

second embodiment of the present invention, showing a state of removing a portion of an outer housing; and FIG. 6 is a cross sectional view of FIG. 5, showing a flow of steam.

Similar reference characters refer to similar parts throughout several views of the drawings.

FIG. 1 is a perspective view of a deodorization apparatus according to the first embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. 3 is a sectional view taken along the line B-B in FIG. 2. The deodorization apparatus 100 according to the first embodiment of the present invention comprises a first housing 10 as an outer housing and a second housing 20 as an inner housing. The first housing 10 and the second housing 20 have a closed shape, respectively, a heat medium oil (not shown) having an excellent heat conductivity is stored in a space between the first housing 10 and the second housing 20. Also, a heating means 11, for example a heater, for heating the heat medium oil is provided in the said space.

The third housing 30 is provided in the second housing 20, a space is also formed between the third housing 30 and the second housing 20. Here, in order to show an inner structure of the third housing 30, for convenience's shake, the first housing 10 is not shown in FIG. 1 and a cover member of the third housing 30 is eliminated in FIG. 1.

In an inner space of the third housing 30, a pair of partition walls 14 and 15 are fixed along a length of the third housing 30, therefore the inner space of the third housing 30 is divided into three rooms 31, 32 and 33 (hereinafter, referred to as a first room, a second room and a third room). An end of the partition wall 14 and opposite end of the partition wall 15 are spaced from the wall of the third housing 30, respectively.

Heating pipes 41, 42 and 43 are provided in the rooms 31, 32 and 33, respectively. For convenience, hereinafter, the pipe received in the first room 31 is referred to as a first heating pipe 41, the pipe received in the second room 32 is referred to as a second heating pipe 42 and the pipe received in the third room 33 is referred to as a third heating pipe 43. The heating pipes 41, 42 and 43 are made from a material having an excellent heat conductivity and anticorrosive property, for example SUS-101 S.

An end portion of each of the heating pipes 41, 42 and 43 is passed through a wall of the first housing 10 and fixed to a wall of the second housing 20. Another end of each of the heating pipes 41, 42 and 43 is spaced from the wall of the third housing 30. Heating means 51, 52 and 53, for example, heaters are mounted at interior of the heating pipes 41, 42 and 43, respectively. Each of the heating means 51, 52 and 53 is connected to each of power supply means (not shown), which are located in the heating pipes 41, 42 and 43 via flanges 61, 62 and 63 and auxiliary pipes, respectively.

On the other hand, both ends of a first connecting pipe 16 are fixed to front portions of the first and second heating pipes 41 and 42, respectively. Thus, inner spaces of the first and second heating pipes 41 and 42 are communicated from each other by the first connecting pipe 16. Hereinafter, for convenience's sake, a portion to which the power supply means are entered, that is, where the flanges 61, 62 and 63 are mounted, are referred to as "a front end", an opposite portion is referred as "rear end".

A steam inlet pipe 71 for supplying the steam exhausted from the drying fermentation apparatus (not shown) into the deodorization apparatus of this invention, that is, a space between the second housing 20 and the third housing 30 is fixed to a front portion of the second housing 20. A gas outlet pipe 72 is connected to a rear portion of the first heating pipe 41. The gas outlet pipe 72 is passed through the third, second and first housings 30, 20 and 10 and exposed to

exterior of the present apparatus.

An operation of this embodiment having a structure as described above and a flow passage of the steam containing the bad smell components will be described.

First of all, steam, which is produced in the drying fermentation apparatus (not shown) at a temperature of 90 to 100 C and contains the bad smell components, is introduced into a space between the second housing 20 and the third housing 30 (hereinafter, refer to as "the second space S2") via the steam inlet pipe 71, At this time, the steam produced in the drying fermentation apparatus is introduced with a certain pressure and velocity due to an compulsory flowing means, for example, a blower. The introduced steam flows in the second space S2 as shown with arrows A1, A2, A3 and A4. Here, a portion of the third housing 30 corresponding to the steam inlet pipe 71 has a wall S10-1 extended to the second housing 20 so that the introduced steam can not be flow directly in the first room 31.

As described above, since the heat medium oil is filled in the space between the first housing 10 and the second housing 20 (hereinafter, refer to as "the first space S1"), a temperature of the steam flows in the second space S2 is arisen for the first time. Thus, the steam with the arisen temperature flows around the second space S2, then is introduced in the first room 31 via an opening H1 formed at an end of the first room as indicated by an arrow B1. The steam introduced in the first room 31 flows around the first heating pipe 41 as indicated by an arrow B2, at this time, the steam absorbs a heat generated at the heating means 51 mounted in the first heat pipe 41 so that a temperature of the steam is arisen. Thereafter, the steam flows into the second room 32 (an arrow C1) via a space between a frond end of the second partition wall 14 and a front wall of the third housing 30.

The steam introduced into the second room 32 flows around the second heating pipe 42, at this time, the steam absorbs a heat generated at the heating means 52 mounted in the second

heat pipe 42 so that a temperature of the steam is further arisen. Thereafter, as indicated by an arrow D1, the steam is introduced into the third room 33 the steam absorbs a heat generated at a heating means 53 mounted in the third heat pipe 43 when the steam flows in the third room 33 (an arrow D2).

The steam which flows in the third room 33 is introduced in the third heating pipe 43 via an opening H2 formed at a front portion of the third heating pipe 43. The steam introduced in the third heating pipe 43 is contacted directly with the heating means 53 mounted in the third heating pipe 43 so that a temperature of the steam is further arisen (about 200 C).

The heated steam flows in the third heating pipe 43 and then is introduced into the second heating pipe 42 via the second connecting pipe 17 connecting to the second and third heating pipes 42 and 43. The steam which flows in the second heating pipe 42 contacts directly the heating means 52 mounted in the second heating pipe 42 so that a temperature of the steam becomes higher (about 400 C) than that of the steam which is exhausted from the third heating pipe 43.

Thereafter, The steam heated in the second heating pipe 42 is introduced into the first heating pipe 41 via the first connecting pipe 16 connecting the first heating pipe 41 and the second heating pipe 42. The steam which flows in the first heating pipe 41 contacts directly with the heating means 51 mounted in the first heating pipe 41 so that a temperature of the steam becomes higher than that of the steam which is exhausted from the second heating pipe 42, a temperature of the steam can be reached to a maximum value (about 600 C or more) in the first heating pipe 41.

In this embodiment, when the steam produced in the drying fermentation apparatus is passed through successively the second space S2 between the second housing 20 and the third housing 30, the first room 31, the second room 32, the third room 33, the third heating pipe 43,

the second heating pipe 42 and the first heating pipe 41, a temperature of the steam is arisen gradually so that a consumption of an energy which is used for heating the steam which flow in the heating pipes 43, 42 and 41 can be saved. That is, before the steam is introduced in each of the heating pipes 43, 42 and 41, the steam is preheated, thus a consumption of the energy used for heating the steam in each step can be reduced.

As described above, a temperature of the steam (containing the bad smell components) introduced into the deodorization apparatus 100 according to the present invention is arisen gradually when the steam is passed through successively the third heating pipe 43, the second heating pipe 42 and the first heating pipe 41, particularly, a temperature of the steam is arisen to 600 C or more in the first heating pipe 41 so that the volatile organic components contained in the steam are burnt completely. The steam in which the volatile organic components were burnt completely, that is, the gas from which the bad smell components and moisture were removed under a high temperature is exhausted to an exterior (atmosphere) through the gas outlet pipe 72 connected to the first heating pipe 41.

On the other hand, in order to remove the bad smell component contained in the steam, it is desirable that the steam is passed through the space, in which a temperature of 600 C or more is maintained, for 0.5 seconds. In the present invention, therefore, the steam should be passed through the first heating pipe 41, which enable a temperature of the steam to be reached to maximum temperature, for 0.5 seconds. Such passing time of the steam can be controlled and defined as follow: t = L/V = (A*L)/Q 0.5 sec.

wherein, "t" is a time (sec.) required to pass through the first heating pipe 41, "L" is a length (mm) of the first heating pipe, "Q" is a flow rate (m3 /sec.) of the gas to be exhausted, "A" is a sectional surface area (m) of the first heating pipe 41 and "Y' is a velocity of the gas to be

exhausted. Consequently, the steam can pass through the heating pipe 41 for 0.5 second by controlling a length and sectional surface area of the first heating pipe 41, a flow rate and velocity of exhausted gas. Specially, it is possible to control a flow rate and velocity of the gas to be exhausted by controlling an amount of the steam introduced into the apparatus (here, amount of the steam depends upon a condition of the blower).

FIG. 4 is a graph showing a variation of temperature of the steam when the steam is passed through in inner spaces of the heating pipes 43, 42 and 41 mounted in the deodorization apparatus according to the first embodiment, this figure shows a variation of a temperature of the steam measured under operations of the heating means 53, 52 and 51 in the heating pipes 43, 42 and 41.

In the present invention, as shown in a graph of FIG. 4, a time required the steam to pass through the first heating pipe 41 is 0.5 second or more, and a temperature of the steam in the inner space of the first heating pipe 41 is 700 C. Under this condition, the volatile organic components generating a bad smell are burnt completely, consequently, a gas exhausted from the deodorization apparatus 100 is a pure air.

Meanwhile, the deodorization apparatus according to the first embodiment of the present invention is formed in plane so that a large area is occupied. Therefore, if the deodorization apparatus has a cylindrical shape, it is possible to solve this problem.

FIG. 5 is a disassembled perspective view of a deodorization apparatus according to the second embodiment of the present invention, showing a state of removing a portion of an outer housing, FIG. 6 is a sectional view of FIG. 5.

A deodorization apparatus 200 according to the second embodiment has a cylindrical shape. A third 130 housing is received in a cylindrical-shaped outer housing 140, a second

housing 120 is received in the third housing 130 and a first housing 110 is received in the second housing 120. Each of the first, second and third housings 110, 120 and 130 has a cylindrical shape. A structure of each of the housings will be described in detail.

A casing 150 in which a platinum (Pt) catalyst PC is received is located in an inner space of the outer housing 140, a front end and rear end are closed by a cap 191 and a cover 192, respectively. A frond portion of the outer housing 140 has an opening 141 for connecting an active carbon unit 180.

A length of the third housing 130 received in the outer housing 140 is shorter than that of the outer housing 140, thus a rear end of the third housing 130 is located before a front end of Pt catalyst casing 150. A space (hereinafter, refer to as a "third space S33") is formed between the outer housing 140 and the third housing 130, an opening 131 which is connected to a steam supplying line L is formed at an end portion of the third housing 130. Meanwhile, a shield plate P is fixed between a rear end of the third housing 130 and an outer wall of the first housing 110.

A length of the second housing 120 received in the third housing 130 is shorter than that of the third housing 130, thus a rear end of the second housing 120 is spaced from the shield plate P. A space (hereinafter, refer to as a "second space S32") is formed between the third housing 130 and the second housing 120.

A rear end of the first housing110 received in the second housing 120 is connected to an opening 151 formed at an front end of the Pt catalyst casing 150. A space (hereinafter, refer to as a "first space S31") is formed between the second housing 120 and the first housing 110. As shown in FIG. 6, the first space S31 and the second space S32 are communicated from each other by a space between the rear end of the second housing 120 and the shield plate P.

Here, a front end of the first housing 110 is located in the second housing 120 so that the first space S31 is communicated with an inner space of the first housing 110.A plurality of

heating means H1, H2 and H3 (only three heating means are shown in FIG. 5) are provided in the inner space of the first housing 110 and held by the cap 191 fixed to the front end of the outer housing 140. Each of the heating means H1, H2 and H3 is a coil wound around a metal rod and connected to an exterior power supply means.

Reference numeral 160 is a supporting housing for supporting a portion of the outer housing 140, an additional heating means (not shown) is provided in a space between the outer housing 140 and the supporting housing 160, and a heat medium oil having an excellent conductivity is stored in the space. An operation of this embodiment having a structure as described above and a flow passage of the steam containing the bad smell components will be described.

First of all, steam, which is produced in the drying fermentation apparatus (not shown) with a temperature of 90 to 100 C and contains the bad smell components, is introduced into the second space S32 between the third housing 130 and the second housing 120 via the steam supplying line L and the opening 131 of the third housing 130. As described in a description regarding the first embodiment, the steam produced in the drying fermentation apparatus is introduced with a certain pressure and velocity due to a compulsory flowing means, for example, a blower. The introduced steam is flow in the second space S32 as indicated by arrow W1, and then introduced in the first space S31 (an arrow W2) via a gap between the rear end of the second housing 120 and the shield plate P fixed between a rear end of the third housing 130 and an outer wall of the first housing 110.

Meanwhile, the second and the first spaces S32 and S31 are in preheated state by the heat medium oil and the heating means H1, H2 and H3 mounted in the first housing 110 so that the steam is somewhat heated when steam flows in the second and the first spaces S32 and S31. The steam in the first space S31 is introduced in an inner space of the first housing 110 via a gap

between the cap 191 and a front end of the first housing 110 (arrow W3). In the first housing 110, the steam is heated by the heating means H1, H2 and H3.

As described in the first embodiment, in order to remove the bad smell components completely, it is desirable that the steam containing the bad smell components should be passed through the space in which a temperature of 600 C or more is maintained, for 0.5 second. Therefore, the inner space of the first housing 110 must keep a temperature of 600 C or more.

After the steam, in which the bad smell components was removed (gaseous state), is exhausted from the first housing 110, the steam is introduced into the Pt catalyst casing 150 connected to a rear end of the first housing 110 and then passed through the casing 150 (arrow W4). At this time, residual bad smell components in the steam are removed again by the Pt catalyst PC in the casing 150. The steam exhausted from the Pt catalyst casing 150 is passed through a space between Pt catalyst casing 150 and the outer housing 140, the third space S33 between the third housing 130 and the outer housing 140 and the opening 141 formed at a front portion of the outer housing 140, successively (arrow W5), and then introduced into the active carbon unit 180. The steam is purified completely by the active carbon in the active carbon unit 180 and then exhausted to the atmosphere.

As compared with the first embodiment, the deodorization apparatus of the second embodiment has a more simple structure and can perform functions that are same as those of the second embodiment. Particularly, the deodorization apparatus according to the second embodiment is formed with a cylindrical shape so that an occupying area can be reduced remarkably.

In the present invention as described above, the steam produced in the process of drying and fermentation and containing bad smell components is passed through an inner space of the preheated members to preheat the steam, and then the preheated steam are introduced and pass

through a space in which the heating means are mounted so that the volatile organic components generating a bad smell can be removed completely by the small quantity of energy.

In the above description, although the present invention is applied to the drying fermentation apparatus in which a bad smell is generated as an example, the present invention can be used for removing bad smell components in a waste water such as a liquid waste from a factory and a cattle shed, etc.. Also, in the above description, although the deodorization apparatus having three (3) rooms formed by two partition walls and three (3) heating pipes mounted in the rooms and another shaped deodorization apparatus having four (4) cylindrical housings and spaces formed by the housings are illustrated and described, a number of rooms, heating pipes and cylindrical housings are not limited.

Although this invention has been described in its preferred forms with a certain degree of particularity, it is appreciated by those skilled in the art that the present disclosure of the preferred form has been made only by way of example and that numerous changes in the details of the construction, combination, and arrangement of parts may be resorted to without departing from the spirit and scope of the invention.

Claims

CLAIMS: 1. A deodorization apparatus for removing bad smell components, comprising; a third housing located in a second housing and having a plurality of partition walls for dividing an inner space thereof into a plurality of rooms, an end portion of one of said partition walls being opened and a corresponding end portion of the adjacent partition wall being closed; a steam inlet pipe connected to said second housing for supplying a steam in a space between said second housing and said third housing; a plurality of heating pipes mounted in said rooms, respectively, each of said heating pipes having a heating means connected to an exterior power supply means; and a gas outlet pipe connected to the outer heating pipe for exhausting a gas in a state that bad smell components are burnt and removed, wherein, a steam containing bad smell components is introduced in a space between said second and third housing via said steam inlet pipe, then flow in said space and passed through said rooms successively for preheating, said steam exhausted from the last room is introduced successively into said heating pipes so that said steam contacts directly each heating means and heated, whereby the bad smell components contained in said steam are burnt completely and said steam is changed into a gaseous state.
2. A deodorization apparatus according to claim 1, wherein said apparatus further comprises a first housing located at an outside of said second housing, an additional heating means is provided in a space between said first and second housings and a heat m dium oil having an excellent heat conductivity is stored in said space between said first and second housings, whereby an introduced steam in said space is preheated.

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3. A deodorization apparatus according to claim 1 or 2, wherein said each heating pipe except the both outer heating pipes has a pipe connected to an adjacent heating pipe, whereby said steam introduced into one heating pipe flows in said heating pipe along the entire length and then flows in the adjacent heating pipe.
4. A deodorization apparatus according to claim 1, 2 or 3, wherein said each heating means is an electrode rod connected to a power supply means or a heating wire wound in a coil shape.
5. A deodorization apparatus for removing bad smell components, comprising; an outer housing supported by a supporting frame and having an opening for exhausting a deodorized steam, wherein a space in which a heating means is mounted being formed between said outer housing and said supporting frame; a third housing being received in said outer housing and having an opening connected to a steam supplying line at a front portion thereof, wherein a space (third space) is formed between said outer housing and said third housing form a space (third space) ; a second housing being received in said third housing, wherein a space (second space) is formed between said third housing and said second housing; and a first housing being received in said second housing and having a plurality of heating means mounted therein, wherein a space (first space) connected to said second space is formed between said second housing and said first housing, whereby said steam containing bad smell components is introduced in said second space and then introduced and heated in an inner space of said first housing via said first space, a deodorized and dried steam (gaseous state) is exhausted to an atmosphere via the third space.

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6. A deodorization apparatus of claim 5, wherein said apparatus further comprises a casing for receiving a platinum catalyst at a -rear portion of said outer housing, said casing has a front opening to which a rear end of the first housing is connected and a rear opening communicated with said third space, whereby after said steam is exhausted from said first housing, said steam (gaseous state) is passed through said platinum catalyst in said casing and then introduced in said third space via said rear opening of said casing.
7. A deodorization apparatus of claim 5 or 6, wherein said apparatus further comprises an active carbon unit connected to an opening formed at said outer housing, whereby a gas exhausted from said third pace is passed through an active carbon received in said unit.
8. A deodorization apparatus as herein described, with reference to the accompanying drawings.