CN208054958U - A kind of board-like deammoniation tower - Google Patents

Abstract

The utility model provides a kind of board-like deammoniation tower, belongs to sewage treatment field, can improve ammonia removal efficiency, molten phenomenon is returned in reduction, and reduces equipment investment and operating cost.The utility model is including being respectively ammonia outlet, ammonia-containing water import, hot-air inlets, ammonia collecting pipe, downspout, band baffle plate tower tray, dirt discharging valve, gas distributor, deamination water out, skirt from top to bottom.

Description

A kind of board-like deammoniation tower

Technical field

The invention belongs to sewage treatment field more particularly to a kind of board-like deammoniation towers.

Background technology

High concentration and ultrahigh concentration ammonia nitrogen waste water discharge in the industrial enterprises such as China's coking, pesticide, chemical fertilizer, chemical industry, coal chemical industry It is more universal, due to these enterprises production technology and production management etc. there are the problem of, thus cause a large amount of height Ammonia nitrogen produces the discharge of waste water.A large amount of ammonia nitrogen is discharged into water body, can lead to the eutrophication of water body, thus cause rivers and lakes Serious pollution, it not only directly affects the living environment of people, also results in the massive losses of national economy for city dirt Water treatment plant, being discharged into for high ammonia-nitrogen wastewater will cause sewage disposal plant effluent exceeded, and influence the normal operation of sewage treatment plant.

Currently used deamination method has the technologies such as zeolite deamination method, ion-exchange, electrochemical oxidation process, blow-off method, Zeolite deamination method, ion-exchange, electrochemical oxidation process are applied generally to the ammonia-containing water of low concentration, but also there is regeneration Difficulty, the big problem of energy consumption, blow-off method deamination are suitable for various concentration waste water deaminizings, high temperature air are passed through in waste water, change ammonia Nitrogen is dissolved in the water established vapor-liquid equilibrium relationship, so that these volatile substances is switched to gas phase by liquid phase, is then collected. This process belongs to mass transport process, and motive force is the concentration difference of the substance in the concentration and gas phase of ammonia nitrogen in waste water.Blow-off method institute Stripping device has stripping pond, stripping tower etc., but minimum to environmental injury, closed-loop operation is stripping tower process, stripping tower It is divided into as two kinds of packed tower, plate column.The packing layer of installing certain altitude in packed tower tower, liquid is under tower top spray, in filler Surface flows downward in membranaceous；Gas is sent by bottom of tower, from below to up with liquid film counter current contacting, completes mass transport process.The bottom of due to The ammonia of portion's blowout returns molten serious without autonomous channel, and mass-transfer efficiency is not high enough, and equipment is huger, filler is easy to block, air quantity Greatly, subsequent processing is costly.Sieve-plate tower is to set the perforated column plate of a certain number of bands in Ta Nei, and water is sprayed, worn from top to bottom Cross sieve pore down, air then flows from the bottom up, when gas passes through liquid layer on sieve plate in a manner of being bubbled, contacts with each other and is passed Matter.But general plate column sieve pore is easy to block, returns that molten phenomenon, air quantity are big, subsequent processing is costly there are a degree of.

Invention content

The present invention provides a kind of board-like deammoniation towers, can improve ammonia removal efficiency, molten phenomenon is returned in reduction, and is reduced Equipment investment and operating cost.

In order to achieve the above object, the present invention uses following scheme：

A kind of board-like deammoniation tower, including skirt and tower body, the tower body are located on the skirt, in the tower body top Between be equipped with ammonia outlet, the tower body bottom is equipped with deamination water out, and the top side of the tower body is equipped with ammonia-containing water import, The tower body interior side is divided into multiple independent spaces by band baffle plate tower tray, and each separate space includes that ammonia is received Collector, gas distributor, hot-air inlets, dirt discharging valve, downspout, the ammonia collecting pipe are located at side and the ammonia of separate space Gas outlet is located on same central axes, and in column plate bottom, the hot-air inlets are a L-type pipe for the gas distributor setting It is passed through separate space bottom to connect with the gas distributor, the dirt discharging valve is located at tower body side band baffle plate tower tray bottom simultaneously It is connect with tower tray, the downspout upper end is located at the middle and lower part of separate space, and bottom extends to next separate space and is located at Below next separate space downspout upper end.

In above-described board-like deammoniation tower, the liquid level that is kept in the tower tray with baffle plate is 0.2-0.4m, when stop Between be 3-5min, tower tray bottom towards valve direction tilt, the band baffle plate tower tray be multilayer, the baffle plate bottom is provided with Slot, top have overturning to export, and multiple gas jetting holes are arranged in the gas distributor.

Beneficial effects of the present invention are：The present invention provides a kind of board-like deammoniation towers, are adopted using the solubility curve of ammonia With high-temperature gas stripping, and rational fluid flow pattern is used, accomplishes in tower repeatedly, stripping step by step, improve stripping efficiency, to the greatest extent may be used Molten phenomenon is returned in the reduction of energy.Vertical baffle plate is set in tower, channel is divided by baffle plate, avoids mutual channelling, tower tray Bottom is tilted towards valve direction can reduce waste water residual, shorten the drain time of waste water, be formed by setting baffle plate narrow Waste water tunnel generate thin layer condition, using on the gas distributor of column plate bottom multiple points injection gas it is useless to drive Water makes waste water be continuously flow toward baffle plate with thin layer state and is close to thereon, and due to continuously flowing, efficient recuperation of heat is easier to Complete, bottom of tower deamination water usually can be completely heated up and cooling in external heat exchanger with ammonia-containing water, recuperation of heat up to 80%, and There is no any operational issue, greatly improve the stripping rate of ammonia nitrogen in waste water, reduces equipment investment and operating cost.

Description of the drawings

Fig. 1 is deammoniation tower schematic diagram of the present invention.

Specific implementation mode

As shown in the picture, a kind of board-like deammoniation tower includes skirt and tower body, and the tower body is located on the skirt, described Tower body top center is equipped with ammonia outlet, and the tower body bottom is equipped with deamination water out, and the top side of the tower body, which is equipped with, to be contained Ammonia waste water import, the tower body interior side is divided into multiple independent spaces by band baffle plate tower tray, described each independent empty Between include ammonia collecting pipe, gas distributor, hot-air inlets, dirt discharging valve, downspout, the ammonia collecting pipe is located at independent empty Between side and ammonia outlet be located on same central axes, the gas distributor is arranged in column plate bottom, the hot-air into Mouth is passed through separate space bottom for a L-type pipe and is connect with the gas distributor, and the dirt discharging valve is located at tower body side band folding Flowing plate tower tray bottom is simultaneously connect with tower tray, and the downspout upper end is located at the middle and lower part of separate space, and bottom extends to next Separate space is simultaneously located at below next separate space downspout upper end.

Ammonia-containing water from tower top side to ammonia-containing water import enter in tower, every layer of tower tray as shown in the picture is respective independence Liquid Space, be heated or cooled according to outside and its capacity, the residence time of waste water is usually 3-5min in each tower tray, is protected The liquid level for holding 0.2-0.4m empties the material in tower tray with blow-off valve.Using multiple on the gas distributor of column plate bottom Point sprays gas to drive waste water, waste water is made to be continuously flow toward baffle plate with thin layer state and be close to thereon.

Heat waste water enter stripping section section stripped, deamination.This section is by many vertical baffling plates for passing through entire tray Composition, each baffle plate bottom are provided with slot, and top has overturning to export.Multigroup baffle plate setting is very close to so that when stripping heat When air is sprayed into from tower tray bottom level pipe distributor in waste water, the hot-air of expansion, which is pushed along tower tray and baffling wall with thin layer, to give up Water is upward, and in rolling exit, ammonia and hot-air enter ammonia through entrainment baffle and collect manifold, and waste water drops to tower tray The bottom of another upper compartment, until each compartment of the waste water sequentially through tower tray, until entering next stage tower from downspout overflow Disk.After the last one tower tray, discharge of wastewater to recuperation of heat and cooling device.It is all heat transmit partition boards play fluid baffles and The effect of baffling, so, waste water flows between the tray that partition board forms, and adds people by a pipe distributor between baffle plate Stir hot-air, the ammonia and hot-air being removed（Containing a small amount of water vapour）It is discharged into ammonia collecting pipe from tower top, tower top is set Induced draft blower withdraws are set, air-introduced machine is suction relative to high efficiency plate deammoniation tower, forms negative pressure in tower, according to Henry's law, improves The volatility of ammonia, is conducive to further decrease ammonia level in waste water, greatly reduces steam-water ratio when stripping, reduces Energy consumption.

The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art It for member, without departing from the principle of the present invention, can also make several improvements, these improvement also should be regarded as the present invention's Protection domain.

Claims (6)

1. a kind of board-like deammoniation tower, which is characterized in that including skirt and tower body, the tower body is located on the skirt, described Tower body top center is equipped with ammonia outlet, and the tower body bottom is equipped with deamination water out, and the top side of the tower body, which is equipped with, to be contained Ammonia waste water import, the tower body interior side is divided into multiple independent spaces by band baffle plate tower tray, described each independent empty Between include ammonia collecting pipe, gas distributor, hot-air inlets, dirt discharging valve, downspout, the ammonia collecting pipe is located at independent empty Between side and ammonia outlet be located on same central axes, the gas distributor is arranged in column plate bottom, the hot-air into Mouth is passed through separate space bottom for a L-type pipe and is connect with the gas distributor, and the dirt discharging valve is located at tower body side band folding Flowing plate tower tray bottom is simultaneously connect with tower tray, and the downspout upper end is located at the middle and lower part of separate space, and bottom extends to next Separate space is simultaneously located at below next separate space downspout upper end.

2. board-like deammoniation tower according to claim 1, which is characterized in that the band baffle plate tower tray is multilayer.

3. board-like deammoniation tower according to claim 1, which is characterized in that the baffle plate bottom is provided with slot, and top is turned over Produce mouth.

4. board-like deammoniation tower according to claim 1, which is characterized in that the tower tray bottom is towards the dirt discharging valve valve side To inclination.

5. board-like deammoniation tower according to claim 1, which is characterized in that the liquid level kept in the tower tray with baffle plate is 0.2-0.4m, residence time 3-5min.

6. board-like deammoniation tower according to claim 1, which is characterized in that multiple gas injections are arranged in the gas distributor Hole.