一、脫硫塔
1、 Desulfurization tower
脫硫塔結(jié)構(gòu)型式較多，現(xiàn)在大多廠家以填料塔主，填料塔以散裝填料為多。散裝填料塔以結(jié)構(gòu)簡略、氣液流轉(zhuǎn)面積大、阻力小、操作彈性大和運轉(zhuǎn)安穩(wěn)等特色優(yōu)于其他板式塔。近年來開發(fā)了不少比外表積大、空隙率高、價廉物優(yōu)的填料，使填料塔發(fā)揮出更大優(yōu)勢。
There are many structural types of desulfurization tower, now most of the manufacturers are mainly packed tower, and most of the packed tower are packed in bulk. The bulk packed column is superior to other plate columns for its simple structure, large gas-liquid flow area, small resistance, large operation flexibility and stable operation. In recent years, a lot of packing materials with large volume, high porosity, low price and good quality have been developed, which make the packed tower play a greater advantage.
進步填料塔吸收功率，關(guān)鍵是要求氣液散布均勻，充沛觸摸。入塔氣、脫硫液的散布、段間氣液再分配設(shè)備、除沫器和防渦板等部件規(guī)劃合理。
The key to improve the power absorption of packed tower is to require the gas and liquid to be evenly distributed and fully touched. The inlet gas, distribution of desulfurizing liquid, gas-liquid redistribution equipment, demister, vortex plate and other components are planned reasonably.
脫硫塔的噴淋密度大于35 m3/(m2·h)，液氣比大于15L/M3。噴淋密度過小，脫硫塔內(nèi)簡單構(gòu)成干區(qū)，形成脫硫功率低，直接危害是脫硫塔硫堵，實踐出產(chǎn)中禁止脫硫循環(huán)液隨體系負荷的改動而調(diào)理，一般應(yīng)控制在很多。另一方面，脫硫塔填料底部現(xiàn)在許多企業(yè)選用駝峰支撐板，其通孔率雖大于100%，但由于在谷底部分不開孔，簡單形成硫堆積，特別是在運用高硫煤時，煤氣入塔進口上方一米處，易形成硫堵。為了削減脫硫塔發(fā)生硫堵或鹽堵，散裝填料底部支撐規(guī)劃時根本都不選用駝峰支撐板，改用一般格柵板，這一點在許多工廠的出產(chǎn)中都得到了印證。
The spray density of desulfurization tower is more than 35 m3 / (M2 · h), and the liquid gas ratio is more than 15 L / m3. If the spray density is too small, the desulfurization tower will simply form a dry area, resulting in low desulfurization power. The direct harm is sulfur blockage in the desulfurization tower. In practice, it is forbidden to adjust the desulfurization circulating liquid with the change of system load, which should be controlled in many areas. On the other hand, many enterprises now choose hump support plate at the bottom of desulfurization tower filler. Although the through hole rate is more than 100%, it is easy to form sulfur accumulation because there is no hole at the bottom of the valley. Especially when using high sulfur coal, sulfur blockage is easy to form at the place one meter above the inlet of the tower. In order to reduce sulfur plugging or salt plugging in desulfurization tower, hump support plate is not used in the bottom support planning of bulk packing at all, but general grid plate is used instead, which has been confirmed in the production of many factories.
二、再生槽
2、 Regeneration tank
為了更有利于硫泡沫的浮選，再生槽一般設(shè)置有2塊散布板，散布板的作用是將脫硫液中氣泡進行從頭散布，使之彌散成很多的小氣泡在上升過程中散布均勻而且能使欲浮選的硫顆粒附著在氣泡外表，一方面加大氣液觸摸面積，另一方面安穩(wěn)再生槽脫硫液液面，以利硫泡沫的有用浮選。基層散布板一般距槽底2米，上層散布板距脫硫液面1～1.5米，散布板上孔徑一般設(shè)置為φ15～20mm，孔間隔為20mm左右，且多以三角形擺放規(guī)劃。為了削減硫泡沫的堆積，削減單質(zhì)硫?qū)υ偕郾倔w的腐蝕，噴發(fā)器尾管距再生槽底部的間隔為600～800mm。
In order to facilitate the flotation of sulfur foam, the regeneration tank generally has 2 dispersing plates. The function of the dispersing plate is to scatter the bubbles in the desulfurizing liquid, so that it can disperse into many small bubbles and distribute evenly in the process of rising. It can make the sulfur particles to be floated on the surface of the bubbles, on the other hand, add the area of the liquid to touch the air, and on the other hand, stabilize the liquid level of the desulfurizing liquid of the regeneration tank. Useful flotation of sulphur foam. The base distribution board is generally 2 meters away from the bottom of the tank, the upper distribution board is 1-1.5 meters away from the desulfurization liquid level, and the aperture on the distribution board is generally set at 0 φ The hole spacing is about 20 mm, and most of them are placed in triangles. In order to reduce the accumulation of sulfur foam and reduce the corrosion of sulfur to the regeneration tank body, the interval between the tail tube and the bottom of the regeneration tank is 600 ~ 800mm.
溶液在再生槽中逗留的時刻，環(huán)保即再生槽有用容積是一項重要規(guī)劃參數(shù)。一般在再生槽中溶液逗留時刻按～15min為宜。
When the solution stays in the regeneration tank, environmental protection, that is, the useful volume of the regeneration tank, is an important planning parameter. Generally, the time of solution staying in the regeneration tank is about 15 minutes.
三、富液槽
3、 Rich liquid tank
富液槽的另一個規(guī)劃要點為脫硫液在富液槽內(nèi)不能構(gòu)成短路，即下進下出，應(yīng)確保脫硫液真 正在富液槽內(nèi)逗留，不然富液槽形同虛設(shè)。
Another key point in the planning of rich liquid tank is that the desulfurization liquid can not form a short circuit in the rich liquid tank, that is to say, it should be ensured that the desulfurization liquid really stays in the rich liquid tank, otherwise the rich liquid tank is in vain.
對濕法脫硫體系的設(shè)備，為削減脫硫液對設(shè)備的腐蝕，規(guī)劃中應(yīng)考慮選用20#鋼，盡可能不必Q235一般碳鋼。
For the equipment of wet desulfurization system, in order to reduce the corrosion of desulfurization liquid to the equipment, 20 × steel should be selected in the planning, and Q235 general carbon steel should not be used as much as possible.
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企業(yè)二維碼
2021-07-16
