CN211784668U - Coal gas analysis pretreatment system - Google Patents

Abstract

The utility model discloses a gas analysis pretreatment system, which comprises an air inlet pipe, a separator, a filter, a condenser, a desulfurizer and an exhaust pipe which are connected in sequence, wherein the exhaust pipe is connected to an air inlet of an analyzer; the separator is internally provided with a perforated partition plate, a filter layer is arranged above the perforated partition plate, the separator is also provided with a coal gas inlet, a gas outlet and a liquid outlet, the gas inlet pipe penetrates through the coal gas inlet and extends to the lower part of the perforated partition plate, the gas outlet is positioned at the top of the separator, and the liquid outlet is positioned at the bottom of the separator. The separator can remove large-particle dust in coal gas, promote water vapor condensation, promote the separation of tar class material, through the preliminary treatment of this system coal gas, can improve analysis appearance measurement accuracy and response speed, prolong the life of analysis appearance.

Description

Coal gas analysis pretreatment system

Technical Field

The utility model belongs to the technical field of the coal gas analysis, a coal gas analysis pretreatment systems is related to.

Background

Gas produced by a gas furnace contains substances such as dust, water vapor and tar, and when the gas is analyzed by a gas analyzer, the substances not only affect the measurement precision of the analyzer, but also damage the analyzer and need to be pretreated. During pretreatment, large solid particles and partial liquid particles are generally removed by primary filtration, fine filtration is then carried out, during primary filtration, large particles are filtered by absorbent cotton, and due to the fact that water vapor exists in coal gas, the absorbent cotton absorbs water to cause gas path blockage, a drying agent is generally required to be additionally arranged for dehydration, and the chemical drying agent is extremely easy to lose efficacy and needs to be frequently replaced; if physical drying agents such as activated carbon and the like are used for dehydration, the activated carbon can adsorb gas, change gas components and influence analysis results.

Disclosure of Invention

The utility model provides a coal gas analysis pretreatment systems can improve measurement accuracy and response speed, prolongs the life of analysis appearance.

The technical scheme adopted by the utility model is that the gas analysis pretreatment system comprises an air inlet pipe, a separator, a filter, a condenser, a desulfurizer and an exhaust pipe which are connected in sequence, wherein the exhaust pipe is connected to an air inlet of an analyzer; the separator is internally provided with a perforated partition plate, a filter layer is arranged above the perforated partition plate, the separator is also provided with a coal gas inlet, a gas outlet and a liquid outlet, the gas inlet pipe penetrates through the coal gas inlet and extends to the lower part of the perforated partition plate, the gas outlet is positioned at the top of the separator, and the liquid outlet is positioned at the bottom of the separator.

Further, the filter layer is a metal mesh filter layer.

Furthermore, the filter layer is a steel wire ball layer, and the thickness is 50 mm. The filament diameter is preferably 0.5 mm.

Furthermore, the perforated partition board is made of 304 stainless steel, and the size of the holes is 6 mm.

Furthermore, the upper portion of separator is cylindric, and the lower part is conical, and the liquid outlet is located conical bottom, and conical inside liquid outlet top is equipped with the floater.

Further, the filter is a bypass filter, and the bypass filter is also connected with a vent flowmeter.

Further, the condenser is a vortex condenser.

The utility model discloses following beneficial effect has:

1. through set up foraminiferous baffle in the separator, set up the filter layer on the baffle, preferably the metal mesh filter layer, more preferably steel wire ball layer, the steel wire ball of closely arranging, its surface area is big, it can be fine carry out the separation to large granule and liquid material, and do not have any influence to gaseous material, gaseous material gets into the filter and carries out more meticulous filtration, further detach solid matter wherein, reentrant condenser is interior to be condensed, the further condensation desorption of vapor, enter into the analysis appearance after carrying out the desulfurization at last in, the gas composition in the coal gas can not change because of the preliminary treatment, the analysis result is accurate, and got rid of the dust, vapor, the interference of tar, measurement accuracy and response speed homoenergetic effectively improve, can also prolong the life of analysis appearance.

2. The large-particle dust removed in the separator can be attached to the steel wire ball and can be removed by cleaning at the later stage, and the steel wire ball can be recycled; the steel wire ball has good heat transfer effect, can quickly reduce the temperature of water vapor, the water vapor which touches the steel wire ball is easy to be condensed into water, tar is also easy to be intercepted by the steel wire ball, and the liquid flows downwards under the action of gravity and is gathered at the bottom of the separator.

3. Because the floating ball is arranged at the bottom of the separator, when liquid is gathered at the bottom of the separator, the floating ball can rise, the liquid outlet is opened, the liquid can be discharged out of the separator for recycling, and after the liquid is discharged, the floating ball falls down, so that the effect of blocking the liquid outlet can be achieved, and the gas is prevented from escaping.

Drawings

Fig. 1 is a schematic diagram of the system of the present invention.

FIG. 2 is a schematic diagram of the separator.

Detailed Description

The present invention will be further explained with reference to the following examples and drawings.

As shown in fig. 1 and 2, a gas analysis pretreatment system comprises an air inlet pipe 1, a separator 2, a filter 3, a condenser 4, a desulfurizer 5 and an air outlet pipe 6 which are connected in sequence, wherein the air outlet pipe is connected to an air inlet of an analyzer 7; the separator is internally provided with a perforated partition plate 2-1, a filter layer 2-2 is arranged above the perforated partition plate, the separator is also provided with a coal gas inlet 2-3, a gas outlet 2-4 and a liquid outlet 2-5, the gas inlet pipe 1 penetrates through the coal gas inlet 2-3 and extends to the lower part of the perforated partition plate 2-1, the gas outlet 2-4 is positioned at the top of the separator, and the liquid outlet 2-5 is positioned at the bottom of the separator.

Preferably, the filter layer is a metal mesh filter layer.

Preferably, the filter layer is a steel wire ball layer, and the thickness of the filter layer is 50 mm. The steel wire ball material which is commercially available and used for kitchen cleaning treatment can be directly selected, and the wire diameter is about 0.5 mm.

Preferably, the perforated partition board 2-1 is made of 304 stainless steel, and the size of the holes is 6 mm. The gas inlet 2-3 of the separator is arranged above the perforated partition, and if arranged below the partition, there may be liquid entering the gas inlet pipe 1 causing clogging.

Preferably, the upper part of the separator is cylindrical, the lower part of the separator is conical, the liquid outlet 2-5 is positioned at the bottom of the conical part, and the floating ball 2-6 is arranged above the liquid outlet 2-5 in the conical part.

Preferably, the filter 3 is a bypass filter, and a vent flow meter 8 is further connected to the bypass filter. The bypass filter is a tee joint, one side of the bypass filter is connected with the emptying flowmeter pipeline in a clamping sleeve mode, and the other side of the bypass filter is provided with a filter membrane for secondary filtration. The filter can be made of glass fiber tubes, and the precision is micron-sized.

Preferably, the condenser is a vortex condenser.

When the system is used for pretreating coal gas, the coal gas enters the separator through the air inlet pipe and passes through the partition plate with the holes to move upwards, when the coal gas passes through the filter layer, the dense steel wire balls are adopted to increase the contact area of the coal gas, solid particles in the coal gas are blocked by the steel wire balls and attached to the steel wire balls, the steel wire balls also have good heat transfer capacity, water vapor in the coal gas can be rapidly condensed, tar substances can be enriched, and separation of large particles, most of the water vapor and tar from gas components in the coal gas is realized. The steel wire ball can not adsorb gas for materials such as active carbon, can not produce any influence to gas composition, and after the primary separation of separator, gas enters into the filter and further separates, can filter tiny particulate matter, gets rid of the liquid material through the condenser to promote the reduction of gas temperature, and the gas after the final desulfurization can adopt the coal gas analysis appearance to carry out the analysis.

Claims (7)

1. A coal gas analysis pretreatment system is characterized in that: the device comprises an air inlet pipe (1), a separator (2), a filter (3), a condenser (4), a desulfurizer (5) and an exhaust pipe (6) which are connected in sequence, wherein the exhaust pipe is connected to an air inlet of an analyzer; the separator is internally provided with a perforated partition plate (2-1), a filter layer (2-2) is arranged above the perforated partition plate, the separator is also provided with a coal gas inlet (2-3), a gas outlet (2-4) and a liquid outlet (2-5), the gas inlet pipe (1) penetrates through the coal gas inlet (2-3) and extends to the lower part of the perforated partition plate (2-1), the gas outlet (2-4) is positioned at the top of the separator, and the liquid outlet (2-5) is positioned at the bottom of the separator.

2. The system of claim 1, wherein: the filtering layer is a metal mesh filtering layer.

3. The system of claim 2, wherein: the filter layer is a steel wire ball layer, and the thickness is 50 mm.

4. The system of claim 1, wherein: the clapboard (2-1) with holes is made of 304 stainless steel, and the size of the holes is 6 mm.

5. The system of claim 1, wherein: the upper part of the separator is cylindrical, the lower part of the separator is conical, the liquid outlet (2-5) is positioned at the bottom of the conical shape, and a floating ball is arranged above the liquid outlet (2-5) in the conical shape.

6. The system of claim 1, wherein: the filter (3) is a bypass filter, and the bypass filter is also connected with an emptying flowmeter.

7. The system of claim 1, wherein: the condenser is a vortex condenser.

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