JPH05509258A - Wet purification device, in particular for separating gaseous and/or liquid and/or solid impurities from a gas stream - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] In particular gaseous and/or liquid and/or solid impurities Wet purifier for separation from stream The invention particularly relates to gaseous and/or liquid and/or solid substances. A wet purifier for separating pure substances from a gas stream, during which a cleaning liquid is introduced. The present invention relates to a wet purification device in which a two-element nozzle is provided for this purpose.

Reduce the health risks and burden of air, water, and land pollutants for residents of densely populated areas. It is becoming increasingly impossible to minimize pollutant emissions from industrial facilities in order to reduce Due to the lack of water, it is difficult in modern environments to almost completely purify gases containing pollutants. This is a challenge for environmental technology.

Alongside the known dry dedusting systems, in recent years many ) A wet dust removal system was developed. The wet dust removal system has a particularly low exhaust gas volume. Reduces energy consumption and water consumption when there is a large amount of dust, and is suitable for fine dust areas. Obtain separation performance.

The action of this wet dust removal device is that dust particles are carried into the liquid by air dispersion inside the dust removal chamber. It's about being able to do something.

The cleaning liquid droplets form a mist of fine droplets by squirting the liquid into the dust removal chamber. It has been shown that separation by is particularly advantageous. 5μm and 50μm A very fine and limited droplet spectrum with droplet sizes between Obtained by using a nozzle.

In DE-O33031951 several nozzles are shown on the nozzle face However, all of those nozzles are fixed to the central introduction tube.

DE-052623033 has two planes with several nozzles per plane is shown in the inflow connecting vibe or in the pipe nozzle following it, These nozzles are likewise supplied with wash water via a central supply pipe.

In the configuration according to DE-AS 2434664, several spray nozzles located in a plane are arranged in a ring shape.

In this case, the individual nozzles have a relatively small distance from each other and from the nozzle chamber wall. ing. However, the resulting reflux is not shown anywhere. . Also here there is a central conduit for the cleaning fluid, which is supplied by an additional control device. nozzle directly, possibly through a conduit extending radially from the central conduit to the nozzle without flows to Additionally, nozzle lances can be utilized for specific geometrical cross-sections. is shown.

All of these known devices have a high dust load and dust size. Depending on the size, the best average droplet diameter can be determined by the corresponding liquid material flow/gas material flow. However, it may not be covered or may be insufficient in the event of a disability. It has the characteristics of

Once incorporated, it succumbs to increased stress due to corrosion or erosive action. moreover , the risk of occlusion increases.

In case of these failures, the wet clarifier can be used to replace the defective nozzle. must be stopped.

In addition, when several nozzles are arranged on one plane, the pressure change that occurs is too small and, moreover, due to pressure changes and therefore changes in operating conditions. A defect in one nozzle is not discovered because it is compensated for in other nozzles. stomach A fault can only be detected when several nozzles fail at the same time.

The problem of the present invention is to prevent equipment interruption and limit purification capacity in the event of a defect in the nozzle. It enables continuous operation without interruption, and also enables continuous operation without interruption. Wet cleaning system powered by a two-element nozzle that allows defective nozzles to be replaced. The object of the present invention is to obtain a converter as well as a feeding device for this two-element nozzle.

According to the invention, the problem is solved when the two-element nozzle is arranged on the outflow side of the lance. Each lance has one or several nozzles, and the central axis of the lance The lines are located perpendicular to the direction of gas flow and in particular the flanges Each nozzle lance can be individually pulled out of the cleaning area of the device and reinserted. Therefore, it is solved. Thus, on the one hand, the cleaning liquid is regularly distributed over the entire cross-section of the gas stream; is achieved, and at the same time there is a defect in the nozzle or group of nozzles. The nozzle lances can be individually withdrawn from the cleaning area of the device. So This can sometimes be done by varying the specific feed rate of adjacent nozzles. , can be treated successively with equal purifying effect.

Following the first nozzle face, one face with the same or a different number of nozzles may be used. Or it is advantageous to arrange several separate nozzle faces, thereby , when several nozzle surfaces act together, the output of each nozzle surface becomes It can be controlled as follows. Separation must occur at the nozzle face facing you in the flow direction. A preparation is made to cover the dust particles, followed by a complete coating of the dust particles on another nozzle face. Contaminants that are completely covered and must be separated from solid materials or other materials. The liquid particles containing the dyeing substance are in a state where they can be easily separated. At that time, the nozzles are separately for cleaning fluids and separately for atomizing gases. Can be connected to the supply pipe.

This allows individual control of the spray conditions of individual nozzles or groups of nozzles. . Therefore, in one or several planes, especially two planes, within the clarifier envelope. A large number of nozzles are installed in so-called nozzle lances, with one Single or several nozzles each on the lance simultaneously separate for cleaning liquid and a separate supply pipe for gaseous atomizing gas. . Each supply pipe is equipped with a separate measuring and control device for the individual supply. I'm being kicked. Therefore, each nozzle group is individually controllable. Thereby , wet cleaners are best suited to the cleaning challenges of the moment (especially when cleaning adjacent areas). (This is also possible if there is a defect in the drain), so the wet cleaner is Changes in concentration of substances (solid material dust, liquid droplets, or contaminated gases) that have to be removed can be adjusted within a large bandwidth. The mutual spacing of the individual nozzle lances Therefore, by the spacing of nozzles per nozzle lance, and therefore by the spacing of adjacent nozzles. Due to the mutual spacing, the wet cleaner is able to precisely target the tasks to be separated in the best possible way. Compatible with

Failure of the device due to incorrectly working nozzles (e.g. due to blockage or due to wear and tear) The problem is obvious in each supply line due to pressure changes or changes in cleaning fluid volume. be made into In case of failure, each nozzle in which the defective nozzle is located Lurance is removed from the wet washer. Cleaner operation continues uninterrupted It is possible.

The opening in the wall that then occurs is very small compared to the inside diameter of the washer, and wet purification is It is effective to operate the device under negative pressure, so be careful when removing the nozzle lance. uncontrolled gas escape through wall openings. No. This wall opening may be temporarily closed using a dummy flange or the like using a known method. can be adjusted.

All other nozzles continue to work unchanged and suddenly the territory of a nozzle lance that does not exist This results in a turbulent gas flow that has slightly different properties in different regions but is mostly countercurrent. The effect of a missing nozzle lance has almost no effect on the degree of separation when It is so slight that it can be seen. nevertheless exceeding the indicated pollutant value If so, this means that the working medium (pressure of cleaning liquid and atomizing gas, flow rate, etc.) must be changed. can be compensated for by adjacent nozzles by increasing the Therefore, this These nozzle arrangements and nozzle operating methods ensure the highest possible reliability and Guarantee certainty.

In an advantageous embodiment, each two-element nozzle includes a nozzle support and a two-element nozzle. It has a nozzle body adapted to the element nozzle. The rear end of the nozzle body contacts the liquid conduit. The outer mantle area of the nozzle body, especially the central part, is connected to the inside of the nozzle body and the jet With an opening for connection with a fog gas conduit. Therefore, the atomizing gas is the way the liquid flows. It is introduced into the nozzle from the side. This results in a correspondingly high level of cleaning fluid. A strong impact occurs in the flow direction, and also a correspondingly fine distribution of the cleaning liquid occurs in the nozzle. From the outlet it reaches the gas stream to be purified. At that time, the nozzle body with the opening The mantle area is surrounded by a ring-shaped chamber provided in the nozzle support; A ring-shaped chamber is connected to the atomizing gas conduit. This allows the spray gas to spread in all directions. are evenly incorporated into the cleaning solution stream.

In the area of the nozzle flow, there is a separation between the cleaning liquid droplets and the contaminants to be separated, e.g. dust particles. Contact occurs in a mixing zone under highly turbulent conditions. due to the inhalation effect of the atomizing gas. The contaminant-laden A forward acceleration of the particles of the gas stream occurs.

The contaminant-laden gas flow is transferred between the nozzles or between the nozzles by backflow. and the inside wall of the washer (shock retention). This is purification The part of the gas flow that must finally penetrate the high-energy nozzle basin This means that it will continue to circulate until it runs out. Distance between nozzles and nozzles The number can be changed arbitrarily, according to the current purification task of the wet clarifier.

An embodiment of the invention is illustrated in the figure.

FIG. 1 is a schematic diagram of a longitudinal section of the gas scrubber in the region of the nozzle lance.

Figure 2 shows a cross section of a gas scrubber, in which the individual nozzles and nozzle lances are Viewed from below.

FIG. 3 is an illustration of a cross section of the nozzle body.

A two-element nozzle 2.2', 2'' is arranged in the gas scrubber 1. 2.2'' and 2'' are arranged in a common nozzle lance 3. In the section there are liquid conduits 4.4'', 4'' and atomizing gas conduits 5.5', 5'. Lurance 3 is provided on the inner surface of flange 6. Flange 6 is gas-washed. It is inserted into the gas scrubber 1 through an opening in the wall of the purifier 1. At that time, this The lunge is fixed to the gas scrubber in the customary manner, e.g. by screws not shown. has been done. As shown in Figure 1, each nozzle is 2.2° or 2”. for its own cleaning liquid conduit 4.4" or 4" and atomizing gas conduit 5.5', or 5" are arranged. Separate conduits 4.4', 4" for the cleaning liquid It is connected to the purifying liquid conduit 7, and the atomizing gas conduit 5.5° or 5'' is connected to the atomizing gas conduit 7. It is connected to a conduit 8 (see Figure 2). Guide to conduits 7 and 8 and individual nozzles conduit 4.4', 4" or 5.5', 5" by a method not shown. are fitted with specific measuring and control devices such as valves, flow meters, etc. , this allows the supply to the individual nozzles to be controlled separately.

The two-element nozzle 2 illustrated in detail in FIG. 3 includes a nozzle support 10 and a nozzle body. 11, the latter being tightly fitted into the nozzle support or, in the present case, splashing. It is embedded. The nozzle body 11 is a nozzle with a nozzle head 14 and an external thread. The nozzle collar 15 is screwed into the nozzle supporter 10. There is. The nozzle collar 15 has an opening 12, especially in the central region, which A ring-shaped chamber surrounding the central region and the inner chamber of the nozzle body 11 are connected. Ring-shaped chamber 1 3 is connected to the gas supply conduit 5 via a connecting duct 16. Cleaning liquid supply For this reason, the rear end of the nozzle collar 15 joins the cleaning liquid supply conduit 4.

Bu C summary The invention particularly relates to gaseous and/or liquid and/or solid substances. It relates to a wet purification device for separating pure substances from a gas stream, in which the The wet purifier is equipped with a two-element nozzle to introduce the cleaning liquid and A two-element nozzle (2,2゛,2'') is arranged on the outflow side of the lance (3). One or several nozzles (2, 2', 2') are provided for each nozzle (3). At that time, the central axis of the lance is on a plane perpendicular to the gas flow direction. To position. Moreover, each nozzle lance (3) can be arranged in particular by means of a flange (6). Can be individually withdrawn from the cleaning area of the device (1) and reinserted .

Claims (6)

[Claims] 1. In particular, gaseous and/or liquid and/or solid impurities Wet purification equipment for separation from the gas stream, during which cleaning liquid is introduced. In a wet purification device equipped with a two-element nozzle, the two-element nozzle (2, 2' , 2'') are arranged on the outflow side of the lance (3), in which case each lance (3) is provided with one or several nozzles (2, 2', 2''), and The central axis of the lance (3) is on a plane perpendicular to the gas flow direction; Each nozzle lance (3) is individually moved from the cleaning area of the device (1) to the flange (6). ) and can be inserted again. Place. 2. Behind the first nozzle face, the same or different number of nozzles (2, 2', 2 ′′) is arranged. A wet purification device according to claim 1, characterized in that: 3. Nozzles (2, 2', 2'') can be used individually or in groups for cleaning. Separate supply lines (4, 4', 4''; 5, 5 ', 5''). The wet purification device according to item 2. 4. For each of the supply pipes (4, 4', 4''; 5, 5', 5''), separate individual supplies. The patent claim is characterized in that a measuring device and a control device are provided for the The wet purification device according to scope 3. 5. Each of the two-element nozzles (2, 2', 2'') has a nozzle support (10) and It has a nozzle body (11) fitted into the nozzle body (11), and the rear end of the nozzle body (11) connected to the conduit (4), and in particular the central mantle region of the nozzle body (11). An opening (1) for connecting the inside of the nozzle body (11) and the atomizing gas conduit (5). 2) Any one of claims 1 to 4, characterized in that The wet purification device described in . 6. The mantle region of the nozzle body (11) with the opening (12) is connected to the nozzle support ( 10) is surrounded by a ring-shaped chamber (13) provided within the ring-shaped chamber (13). 13) is in communication with the atomizing gas conduit (5) The wet purification device according to item 5.