CN101845324A - Generation method of inert gas with stable aerification layer - Google Patents
Generation method of inert gas with stable aerification layer Download PDFInfo
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- CN101845324A CN101845324A CN201010128478A CN201010128478A CN101845324A CN 101845324 A CN101845324 A CN 101845324A CN 201010128478 A CN201010128478 A CN 201010128478A CN 201010128478 A CN201010128478 A CN 201010128478A CN 101845324 A CN101845324 A CN 101845324A
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Abstract
The invention provides a generation method of an insert gas with a stable aerification layer, relating to the filed of production of gas producer inert gases. The method comprises the work procedures of blowing steam upward and blowing air upward, which is characterized in that a lower drain cock is arranged on a bypass on a pipe between a lower master valve and a gas producer; and the generation method of the insert gas comprises the following steps: corresponding valves respectively control the open and close of various stages to carry out the following operations: (1) the steam blown upwards from the bottom at first time is exhausted from an upper drain cock; (2) the steam blown downwards from the top part is exhausted from the lower drain cock; (3) the steam blown upwards from the bottom at the second time is exhausted from the upper drain cock; (4) the air blown upwards from the bottom at the first time is exhausted from the upper drain cock; and (5) the air blown upwards from the bottom at the second time generates the insert gas through the aerification layer, and the insert gas enters a heat exchanger through the upper master valve for cooling. The invention increases air blown downwards from the top part, avoids that the original program is always in air up going, furnace temperature is high so that the furnace is always blown out for charging; the furnace temperature is effectively controlled, thereby avoiding the booster caused by overheat; and the carbon conversion rate of the materials is improved and the energy consumption is lowered.
Description
Technical field:
The invention belongs to producer gas generator rare gas element production field, is that a kind of producer gas generator of saving consumption, stable gasification layer is produced the effective technology of rare gas element, is applicable to coal gas system maintenance metathetical advanced technologies.
Background technology:
Gas Production, induction system must be replaced when maintenance is got angry, and nitrogen making machine group or high concentration CO more than needed are arranged
2The producer of gas adopts nitrogen or high concentration carbon dioxide gas to replace, and the producer that does not possess this condition then must produce inert gas by gas generator and replace.Blow two stages of steam blowing on air and the bottom on bottom the method for traditional producer gas generator production rare gas element has only.Bottom blowing up steam phase is that steam enters from the gas generator bottom, produces coal gas through the gasification layer reaction, and coal gas comes out from top, carries out emptying after cyclone dust removal, decreases through this stage gasification layer temperature.Blowing the air stage on the bottom is that air enters from the producer gas generator bottom, produces rare gas element (main component CO through the reaction of gasification layer
2, CO
2+ H
2≤ 8%), utilize this gas that pipeline, the equipment of system are replaced, this stage gasification layer temperature raises to some extent.
The gas generator structure is that the gas generator bottom is provided with lower inlet pipe, upper outlet pipe, the upper and lower total valve that is communicated with it, the steam source pipe is communicated with gas generator lower inlet pipe by lower inlet valve, lower inlet valve respectively with the air gas source pipe, this inlet tube simultaneously also with lower total valve pipeline connection; Gas generator is communicated with upper total valve by the upper outlet pipe, upper inlet valve of bypass between upper total valve and the gas generator, upper inlet valve is communicated with the steam source pipe, upper and lower total valve respectively with the waste heat exchanger pipeline communication, noble gas is produced exhaust-valve in of upper total valve and the bypass of gas generator connecting pipe in order to replace; Producing the waste gas of indifferent gas process is discharged by upper exhaust-valve.But lower exhaust-valve of the no bypass of pipeline between lower total valve and gas generator, if the waste gas that upper inlet valve admission produces can't discharge, therefore the production of inert gas can only be based upon on the circular flow basis in two stages, and the major defect of its existence is as follows:
1, owing to be in the gas uplink state all the time, the furnace temperature of producer gas generator is high easily, and trip temperature surpasses 500 ℃ easily on the blowing stage especially, causes the situation of the waste heat exchanger generation booster of waste heat recovery;
2, in order to control furnace temperature, when temperature reaches 450 ℃ of left and right sides, must move by shut down procedure, suitably add materials, control its temperature, increase operative employee's labour intensity;
3, the production of inert gas should be in low carbon-coating, moves under the low furnace temperature state, is conducive to control fuel gas content.For controlling this situation, ceaselessly adding material is ceaselessly discharged the reaction slag, forms the eating and discharging situation.Under this situation, cause the gasification layer rather unstable, the carbon conversion ratio of material is low, consumption is high, and the indifferent gas constituent content instability of producing simultaneously is so that the time lengthening of system's displacement;
4, the replacement process of driving behind system overhaul transfers the production semiwater gas to after inert gas replacement is qualified, because the instability of gasification layer causes semiwater gas oxygen content height easily, and time and safety that impact is driven.
Summary of the invention:
The object of the present invention is to provide a kind of inert gas production method of stable gasification layer, improve the efficient that inert gas is produced, reduce the consumption of producing inert gas, stablize gasification layer, semiwater gas processed is created good condition in order to drive.
The solution of the present invention is: lower exhaust-valve of bypass on pipeline between lower total valve and the gas generator, and the inert gas production stage is: each stage of respective valves is controlled respectively keying, carries out following operation:
1. the first steam blowing of going up in bottom is discharged by last exhaust-valve;
2. steam blowing is discharged by lower exhaust-valve under the top;
3. steam blowing is discharged by upper exhaust-valve on the secondary of bottom;
4. the first blowing up air in bottom is discharged by upper exhaust-valve;
5. secondary blowing up air in bottom produces inert gas through gasification layer, and inert gas enters heat exchanger by upper main valve and cools off.
The invention has the advantages that: increased steam blowing on steam blowing under the top, the bottom secondary, bottom and blown the air stage on first, each step conversion is based on the working time in stage of program setting, it is up to have avoided original program to be in gas all the time, the furnace temperature height, constantly blowing out is reinforced, gobbles big row's situation, realized steam blowing stage self-feeding under the top, effectively control furnace temperature, avoided overtemperature to cause the waste heat exchanger booster, reduced operative employee's labour intensity simultaneously greatly.All the time up situation of gas has been eliminated in the change of program, and gasification layer control obtains relative stable, and the carbon conversion ratio of material improves, and the consumption of producing inert gas is reduced, and the inert composition of producing gained is stable, has greatly shortened the time of displacement.
Description of drawings:
Accompanying drawing is a structural representation of the present invention.
Embodiment:
Method of the present invention for comprise steam blowing, on blow the air operation, operational outfit comprise producer gas generator (3), down total valve (8), down admission valve (2), lower inlet valve (1), go up admission valve (7), go up total valve (5), waste heat exchanger (6), go up exhaust-valve (4), steam source pipe, air source of the gas pipe, it is characterized in that; A following exhaust-valve of bypass (9) on pipeline between following total valve (8) and the producer gas generator (3), admission valve (7) is gone up in one of bypass between last total valve (5) and producer gas generator (3), and last admission valve (7) is communicated with the steam source pipe; The rare gas element production stage is: each stage of respective valves is controlled keying respectively, carries out following operation:
1. the first upper steam blowing in bottom is discharged by upper exhaust-valve (4);
2. steam blowing under the top is discharged by following exhaust-valve (9);
3. steam blowing on the secondary of bottom is discharged by upper exhaust-valve (4);
4. the first blowing up air in bottom is discharged by upper exhaust-valve (4);
5. blow air on the secondary of bottom and produce rare gas element through the gasification layer, rare gas element enters waste heat exchanger (6) by last total valve (5) and cools off.
Flow process is as follows: producer gas generator (3) is produced the rare gas element program and is divided into the first steam blowing on steam blowing, the bottom secondary, bottom gone up under steam blowing, the top in bottom and blows on first and blow on air, the bottom secondary five stages of air.The bottom secondary blowing up air stage is that air enters from gas generator (3) bottom, makes inert gas through the gasification layer reaction, comes out coal gas system is replaced from top, and this stage produces heat.The first blowing up steam phase in bottom is that steam enters from gas generator (3) bottom, emptying after the reacted gas of gasification layer comes out from top, and this stage is to absorb the gasification layer heat.Top blowing down steam phase is that steam enters from gas generator (3) top, come out to carry out emptying through lower exhaust-valve from the bottom after the gasification layer reaction, this stage is to absorb the gasification layer heat, simultaneously from top to bottom, the particularly cooling on gasification layer upper strata, the control stable gasification layer.Bottom secondary blowing up steam phase flow process and the first blowing up vapor phase in bottom are to prevent from directly entering the first blowing up air stage of bottom after top blowing down steam phase from finishing together, and coal gas and air mixed occurrence that top blowing down steam phase residues in the bottom explode.It is that air enters from the bottom that the air stage is blown on the secondary in the bottom, carries out emptying after coming out from top behind the gasification layer, and this stage is that the coal gas that stove top is residual purges, and prevents that it from entering system.
Claims (1)
1. the inert gas production method of stable gasification layer, comprise steam blowing, blowing up air operation, operational outfit comprises gas generator (3), lower total valve (8), lower inlet valve (2), lower inlet valve (1), upper inlet valve (7), upper total valve (5), waste heat exchanger (6), upper exhaust-valve (4), steam source pipe, air gas source pipe, it is characterized in that; A lower exhaust-valve of bypass (9) on pipeline between lower total valve (8) and the gas generator (3), upper inlet valve (7) of bypass between upper total valve (5) and gas generator (3), upper inlet valve (7) is communicated with the steam source pipe; The inert gas production stage is: each stage of respective valves is controlled respectively keying, carries out following operation:
1. the first upper steam blowing in bottom is discharged by upper exhaust-valve (4);
2. steam blowing under the top is discharged by following exhaust-valve (9);
3. steam blowing on the secondary of bottom is discharged by upper exhaust-valve (4);
4. the first blowing up air in bottom is discharged by upper exhaust-valve (4);
5. blow air on the secondary of bottom and produce rare gas element through the gasification layer, rare gas element enters waste heat exchanger (6) by last total valve (5) and cools off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010128478A CN101845324A (en) | 2010-03-19 | 2010-03-19 | Generation method of inert gas with stable aerification layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010128478A CN101845324A (en) | 2010-03-19 | 2010-03-19 | Generation method of inert gas with stable aerification layer |
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| CN101845324A true CN101845324A (en) | 2010-09-29 |
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| CN201010128478A Pending CN101845324A (en) | 2010-03-19 | 2010-03-19 | Generation method of inert gas with stable aerification layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112745967A (en) * | 2020-12-11 | 2021-05-04 | 安徽金禾实业股份有限公司 | Automatic temperature raising and inert making method of UGI furnace |
-
2010
- 2010-03-19 CN CN201010128478A patent/CN101845324A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 贾广生: "解决惰性气体制备的难关", 《化工设计通讯》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112745967A (en) * | 2020-12-11 | 2021-05-04 | 安徽金禾实业股份有限公司 | Automatic temperature raising and inert making method of UGI furnace |
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Application publication date: 20100929 |