CN113029072A - Fluidized bed gasifier bed of material detection device and fluidized bed gasifier - Google Patents
Fluidized bed gasifier bed of material detection device and fluidized bed gasifier Download PDFInfo
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- CN113029072A CN113029072A CN202110213921.6A CN202110213921A CN113029072A CN 113029072 A CN113029072 A CN 113029072A CN 202110213921 A CN202110213921 A CN 202110213921A CN 113029072 A CN113029072 A CN 113029072A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
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Abstract
The utility model relates to a fluidized bed gasifier technical field, concretely relates to fluidized bed gasifier bed of material detection device and fluidized bed gasifier, wherein this detection device includes: the first pressure measuring components are arranged on the furnace wall of the gasification furnace concentrated phase zone and used for measuring to obtain a plurality of first pressure values; the second pressure measuring components are arranged on the furnace wall of the dilute phase zone of the gasification furnace and used for measuring to obtain a plurality of second pressure values; the processing unit determines a target first pressure value and a target second pressure value which meet a preset pressure value condition in the plurality of first pressure values and the plurality of second pressure values; and determining the height of the material layer in the gasification furnace based on the pressure drop of each material layer meter and the target first pressure value and the target second pressure value. The material bed height that this disclosed embodiment measured and calculated is comparatively accurate, and then reducible shut-down number of times and maintenance work volume, realizes the high continuous and comparatively accurate measurement of material bed in longer time, improves the whole work efficiency of gasifier to a certain extent.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of gasifiers, in particular to a material layer detection device of a fluidized bed gasifier and the fluidized bed gasifier comprising the material layer detection device of the fluidized bed gasifier.
Background
Coal keeps a high proportion in energy consumption of China, and a coal gasification process is an important way for realizing clean and efficient conversion of coal. In the field of coal gasification, fluidized bed gasifiers are widely used due to fast flow rate of gasifying agents and balanced reaction.
The bed height of the gasifier must be monitored at all times during the steady operation of the fluidized bed gasifier. In the related technology, a pressure sampling point can be respectively arranged in a dilute phase area and a dense phase area of the fluidized bed gasification furnace, a pressure sampling pipe and a pressure gauge are arranged at the two pressure sampling points to measure two pressure values, and the material layer height is obtained by dividing the difference value of the two calculated pressure values by the pressure drop of the material layer per meter.
However, the coal particle size of the fluidized bed gasifier is small, fly ash with small particle size is easily generated in the combustion process, so that the pressure sampling pipe and/or the pressure gauge are easily blocked, the measured pressure value is possibly inaccurate, and in addition, factors such as errors and the like possibly appearing in the pressure gauge cause that the actually measured pressure value is also possibly inaccurate, so that the calculated material bed height is inaccurate, and continuous measurement cannot be realized even when the actually measured pressure value is interrupted in serious cases. In addition, under the condition that the height of a material layer is measured inaccurately, the fluidized bed gasification furnace needs to be stopped for maintenance in time, so that the maintenance workload is increased, and the working efficiency of the fluidized bed gasification furnace is also influenced.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the present disclosure provides a gasifier bed detection apparatus, and a gasifier including the gasifier bed detection apparatus.
In a first aspect, an embodiment of the present disclosure provides a fluidized bed gasifier bed detection device, including:
the first pressure measuring components are arranged on the furnace wall of the gasification furnace concentrated phase zone and used for measuring to obtain a plurality of first pressure values;
the second pressure measuring components are arranged on the furnace wall of the dilute phase zone of the gasification furnace and used for measuring to obtain a plurality of second pressure values;
the processing unit is respectively connected with the first pressure measuring assembly and the second pressure measuring assembly and used for executing the following operations:
determining a target first pressure value and a target second pressure value which meet a preset pressure value condition in the plurality of first pressure values and the plurality of second pressure values;
and determining the height of the material layer in the gasification furnace based on the pressure drop of each material layer meter, the target first pressure value and the target second pressure value.
In some embodiments of the present disclosure, the processing unit includes:
the pressure range configuration unit is used for configuring the preset pressure value conditions, and the preset pressure value conditions comprise a first preset pressure value range and a second preset pressure value range;
the pressure value determining unit is used for selecting a first middle pressure value in the first pressure values as a target first pressure value when the first pressure values are all in the first preset pressure value range; when the plurality of second pressure values are within the second preset pressure value range, selecting a second middle pressure value in the plurality of second pressure values as a target second pressure value;
and the material layer height calculating unit is used for calculating the difference value between the first intermediate pressure value and the second intermediate pressure value and determining the material layer height based on the difference value and the pressure drop of each meter of the material layer.
In some embodiments of the present disclosure, the pressure value determination unit is further configured to: when at least one first pressure value in the first pressure values is not within the first preset pressure value range, removing the at least one first pressure value to obtain a residual first pressure value serving as a target first pressure value;
when the plurality of second pressure values are within the second preset pressure value range, selecting a second middle pressure value in the plurality of second pressure values as a target second pressure value;
the material layer height calculating unit is further used for:
calculating a first arithmetic mean value of the residual first pressure value, calculating a difference value between the first arithmetic mean value and the second intermediate pressure value, and determining the height of the material layer based on the difference value and the pressure drop of each meter of the material layer;
or, the pressure value determination unit is further configured to:
when the plurality of first pressure values are all in the first preset pressure value range, selecting a first middle pressure value in the plurality of first pressure values as a target first pressure value;
when at least one second pressure value in the plurality of second pressure values is not within the second preset pressure value range, removing the at least one second pressure value to obtain a residual second pressure value serving as a target second pressure value;
the material layer height calculating unit is further used for:
and calculating a second arithmetic mean value of the residual second pressure value, calculating a difference value between the second arithmetic mean value and the first intermediate pressure value, and determining the height of the material layer based on the difference value and the pressure drop of each meter of the material layer.
In some embodiments of the present disclosure, the pressure value determination unit is further configured to:
when the first pressure values are all in the first preset pressure value range, calculating a third arithmetic mean value of the first pressure values as a target first pressure value;
when the plurality of second pressure values are all in the second preset pressure value range, calculating a fourth arithmetic mean value of the plurality of second pressure values as a target second pressure value;
the material layer height calculating unit is further used for:
calculating the difference between the third arithmetic mean and the fourth arithmetic mean, and determining the height of the material bed based on the difference and the pressure drop per meter of the material bed.
In some embodiments of the present disclosure, the pressure value determination unit is further configured to:
when at least one first pressure value in the first pressure values is not within the first preset pressure value range, removing the at least one first pressure value to obtain a residual first pressure value serving as a target first pressure value;
when the plurality of second pressure values are all in the second preset pressure value range, calculating a fourth arithmetic mean value of the plurality of second pressure values as a target second pressure value;
the material layer height calculating unit is further used for:
calculating a fifth arithmetic mean value of the residual first pressure value, calculating a difference value of the fifth arithmetic mean value and the fourth arithmetic mean value, and determining the height of the material layer based on the difference value and the pressure drop of each meter of the material layer;
or, the pressure value determination unit is further configured to:
when the first pressure values are all in a first preset pressure value range, calculating a third arithmetic mean value of the first pressure values as a target first pressure value;
when at least one second pressure value in the plurality of second pressure values is not within the second preset pressure value range, removing the at least one second pressure value to obtain a residual second pressure value serving as a target second pressure value;
the material layer height calculating unit is further used for:
calculating a sixth arithmetic mean of the remaining second pressure values, calculating a difference between the sixth arithmetic mean and the third arithmetic mean, and determining the height of the material bed on the basis of the difference and the pressure drop per meter of the material bed;
or, the pressure value determination unit is further configured to:
when at least one first pressure value in the first pressure values is not within the first preset pressure value range, removing the at least one first pressure value to obtain a residual first pressure value serving as a target first pressure value;
when at least one second pressure value in the plurality of second pressure values is not within the second preset pressure value range, removing the at least one second pressure value to obtain a residual second pressure value serving as a target second pressure value;
the material layer height calculating unit is further used for:
calculating a fifth arithmetic mean value of the residual first pressure value, calculating a sixth arithmetic mean value of the residual second pressure value, calculating a difference value of the fifth arithmetic mean value and the sixth arithmetic mean value, and determining the height of the material layer based on the difference value and the pressure drop of each meter of the material layer.
In some embodiments of the present disclosure, each of the first load cell assemblies includes:
one end of the first pressure sampling pipe is communicated with and arranged on the furnace wall of the gasification furnace dense-phase zone;
the first pressure gauge is connected with the other end of the first pressure sampling pipe and connected with the processing unit;
and/or each second load cell assembly comprises:
one end of the second pressure taking pipe is communicated and arranged on the furnace wall of the dilute phase zone of the gasification furnace;
and the second pressure gauge is connected with the other end of the second pressure sampling pipe and is connected with the processing unit.
In some embodiments of the present disclosure, one end of each first pressure tapping pipe extends into the furnace wall of the dense phase zone and is flush with the inner wall of the furnace wall; and/or each first pressure sampling pipe and the furnace wall are arranged in an inclined and upward manner at a preset included angle, and the preset included angle is an acute angle; and/or one end of each second pressure sampling pipe extends into the furnace wall of the dilute phase zone and is flush with the inner wall of the furnace wall; and/or each second pressure sampling pipe and the furnace wall are arranged in an inclined upward manner at the preset included angle.
In some embodiments of the disclosure, a plurality of first pressure taking ports are formed in a furnace wall of the gasifier dense-phase zone, and each first pressure taking port is correspondingly connected with one first pressure taking pipe;
the first pressure taking ports are positioned on the horizontal plane of a distribution plate of the gasification furnace and are distributed at equal intervals along the circumferential direction of the distribution plate;
and/or a plurality of second pressure taking ports are formed in the furnace wall of the dilute phase zone of the gasification furnace, and each second pressure taking port is correspondingly connected with one second pressure taking pipe;
the second pressure taking ports are located on the same horizontal plane and distributed at equal intervals along the circumferential direction of the gasification furnace, and the second pressure taking ports are arranged at positions higher than the highest material level of the gasification furnace.
In some embodiments of the present disclosure, further comprising:
the number of the purging pipes is the same as the sum of the number of the first pressure sampling pipes and the number of the second pressure sampling pipes, the other end of each first pressure sampling pipe is connected with one purging pipe, and the other end of each second pressure sampling pipe is connected with one purging pipe;
and the purging equipment is respectively connected with the purging pipes, and the purging pressure of the purging equipment during working is greater than the maximum pressure of the gasification furnace during running.
In some embodiments of the present disclosure, the inner diameter of each of the first pressure tapping pipes is the same; and/or the inner diameter of each second pressure sampling pipe is the same; and/or the inner diameter of each purge tube is the same.
In some embodiments of the present disclosure, the distance from the purge device to the purge path of each of the first pressure gauges and the distance to the purge path of each of the second pressure gauges are the same.
In a second aspect, an embodiment of the present disclosure provides a fluidized bed gasification furnace, including the fluidized bed gasification furnace material layer detection apparatus described in any of the above embodiments.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
in the embodiment of the disclosure, a plurality of first pressure measurement assemblies are arranged on a furnace wall of a dense phase zone of a gasification furnace and used for measuring to obtain a plurality of first pressure values, a plurality of second pressure measurement assemblies are arranged on the furnace wall of the dilute phase zone of the gasification furnace and used for measuring to obtain a plurality of second pressure values, a processing unit determines a target first pressure value and a target second pressure value which meet a preset pressure value condition in the plurality of first pressure values and the plurality of second pressure values, and determines the height of a material layer in the gasification furnace based on the pressure drop of the material layer per meter and the target first pressure value and the target second pressure value. Therefore, in the scheme of the embodiment, a plurality of first pressure measuring assemblies and second pressure measuring assemblies are arranged, and when one first pressure measuring assembly and/or one second pressure measuring assembly is/are in failure, damaged or inaccurate in measured data, the height of the material layer can still be obtained by calculating other measured first pressure values and second pressure values meeting the condition of the pressure values, so that the continuity of the height of the material layer can be realized in a longer time, and the shutdown times and the maintenance workload are reduced; simultaneously, the height of the material layer calculated through a plurality of first pressure values and second pressure values is also more accurate, thereby reducing the phenomenon that the fluidized bed gasification furnace needs to be stopped in time for maintenance when the height of the material layer is inaccurate, further reducing the shutdown times and the maintenance workload, and improving the overall working efficiency of the gasification furnace to a certain extent.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic circuit diagram of a fluidized bed gasification furnace material layer detection device according to an embodiment of the disclosure;
FIG. 2 is a schematic view of a processing unit of the fluidized-bed gasification furnace material layer detection apparatus shown in FIG. 1;
FIG. 3 is a schematic structural diagram of a material layer detection device of a fluidized bed gasification furnace according to an embodiment of the disclosure;
fig. 4 is a schematic structural view of a fluidized bed gasification furnace material layer detection device according to another embodiment of the disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
It is to be understood that, hereinafter, "at least one" means one or more, "a plurality" means two or more. "and/or" is used to describe the association relationship of the associated objects, meaning that there may be three relationships, for example, "a and/or B" may mean: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
Fig. 1 is a schematic view of a fluidized bed gasification furnace material layer detection apparatus according to an embodiment of the present disclosure, which may include a plurality of first pressure measurement assemblies 101, a plurality of second pressure measurement assemblies 102, and a processing unit 103. The first pressure measuring assemblies 101 are disposed on the furnace wall of the dense phase zone of the gasification furnace 10, and are used for measuring a plurality of first pressure values. The second pressure measuring assemblies 102 are disposed on the furnace wall of the dilute phase region of the gasification furnace 10, and are used for measuring a plurality of second pressure values. The processing unit 103 is connected to, e.g., electrically connected to, a plurality of the first load cell assemblies 101 and the second load cell assemblies 102, respectively, so as to perform the following operations: determining a target first pressure value and a target second pressure value which meet a preset pressure value condition in the plurality of first pressure values and the plurality of second pressure values; and determining the height of the material layer in the gasification furnace based on the pressure drop of each material layer meter, the target first pressure value and the target second pressure value.
In the above scheme of the embodiment of the disclosure, a plurality of first pressure measurement assemblies and second pressure measurement assemblies are arranged to detect and determine the material bed height, and when one first pressure measurement assembly and/or second pressure measurement assembly is failed, damaged or the measured data is inaccurate, the material bed height can still be obtained by calculating other measured first pressure values and second pressure values which meet the preset pressure value condition, so that the material bed height continuity can be realized in a longer time, and the shutdown times and the maintenance workload are reduced; simultaneously, the height of the material layer calculated through a plurality of first pressure values and second pressure values is also more accurate, thereby reducing the phenomenon that the fluidized bed gasification furnace needs to be stopped in time for maintenance when the height of the material layer is inaccurate, further reducing the shutdown times and the maintenance workload, and improving the overall working efficiency of the gasification furnace to a certain extent.
Optionally, in some embodiments of the disclosure, the processing unit 103 may be a programmable Logic controller plc (programmable Logic controller), or other programmable Logic device circuit, and the like, but is not limited thereto.
Optionally, in some embodiments of the present disclosure, in combination with fig. 2, the processing unit 103 includes a pressure range configuration unit 131, a pressure value determination unit 132, and a material layer height calculation unit 133, where: the pressure range configuration unit 131 is configured to configure the preset pressure value condition, where the preset pressure value condition includes a first preset pressure value range and a second preset pressure value range. The pressure value determining unit 132 is configured to select a first intermediate pressure value of the plurality of first pressure values as a target first pressure value when the plurality of first pressure values are within the first preset pressure value range; and when the plurality of second pressure values are within the second preset pressure value range, selecting a second middle pressure value in the plurality of second pressure values as a target second pressure value. And a material layer height calculating unit 133, configured to calculate a difference between the first intermediate pressure value and the second intermediate pressure value, and determine a material layer height based on the difference and a pressure drop per meter of the material layer.
Specifically, since the pressures in the dilute phase zone and the dense phase zone of the gasification furnace 10 are usually different, the first preset pressure value range and the second preset pressure value range are configured to be correspondingly different. In this embodiment, the first preset pressure value range and the second preset pressure value range are related to the outlet pressure P during the start-up operation of the gasification furnace, and the outlet pressure P is a measurable follow-up value, that is, the outlet pressure P may change along with the progress of the process. Illustratively, the first predetermined range of pressure values may be [ P-S £ + Hmax/P, P + S £ + Hmax/P ], i.e., the first range of follower values, and the second predetermined range of pressure values may be [ P-S £, P + S £ ], i.e., the second range of follower values. Wherein p is the pressure drop of each material layer, which can be determined by experiments in advance, Hmax is the highest material layer designed for the gasification furnace, Hmax/p is the pressure corresponding to the highest material layer, S represents the pressure measurement range of each first pressure measurement assembly and second pressure measurement assembly, such as the range of a pressure gauge, and is usually the same, and £ represents the measurement precision of each first pressure measurement assembly and second pressure measurement assembly, such as the pressure gauge.
In one specific example, three first load cell assemblies and three second load cell assemblies are exemplified. At this time, when the measured values of the corresponding three first pressure values P11, P12 and P13 are all within the range of [ P-S £ + Hmax/P, P + S £ + Hmax/P ], the values of P11, P12 and P13 are considered to be real pressures, at this time, a first intermediate pressure value of the three first pressure values P11, P12 and P13 can be selected, for example, P11 < P12 < P13, and the first intermediate pressure value is P12, that is, a first target pressure value.
Similarly, when the measured values of the corresponding three second pressure values P21, P22 and P23 are all within the range of [ P-S £ P + S £ ], the values of P21, P22 and P23 are considered to be real pressures, at this time, a second intermediate pressure value of the three second pressure values P21, P22 and P23, for example, P21 < P22 < P23, may be selected, and the second intermediate pressure value is P22, that is, a second target pressure value.
Finally, the difference (P12-P22) between the first intermediate pressure value P12 and said second intermediate pressure value P22 is calculated, and the height H of the bed is determined on the basis of this difference and the pressure drop P per metre of bed.
Wherein, H is (P12-P22)/P.
It should be noted that, in other specific examples, when there are an even number of first pressure measuring assemblies and second pressure measuring assemblies, similar to the case of the three pressure measuring assemblies, but when intermediate pressure values, such as four first pressure values P11, P12, P13, and P14, are selected, if P11 < P12 < P13 < P14, the intermediate 2 pressure values P12, P13 may be selected; similarly, when selecting the middle pressure values such as the four second pressure values P21, P22, P23 and P24, if P21 < P22 < P23 < P24, the middle 2 pressure values P22 and P23 can be selected. The calculation of the height of the material layer can adopt the following formula:
H＝((P12+P13)/2-(P22+P23)/2)/p。
optionally, in some embodiments of the present disclosure, the pressure value determining unit 132 is further configured to, when at least one first pressure value in the plurality of first pressure values is not within the first preset pressure value range, remove the at least one first pressure value to obtain a remaining first pressure value as a target first pressure value; and when the plurality of second pressure values are within the second preset pressure value range, selecting a second middle pressure value in the plurality of second pressure values as a target second pressure value. The material bed height calculating unit 133 is further configured to calculate a first arithmetic mean of the remaining first pressure values, calculate a difference between the first arithmetic mean and the second intermediate pressure value, and determine a material bed height based on the difference and a pressure drop per meter of the material bed.
Specifically, as an example, when any one of the three first pressure values P11, P12, P13 is not in the range of [ P-S + Hmax/P, P + S + Hmax/P ], assuming that P11 is not in the range, removing P11 to obtain the remaining first pressure values P12, P13, calculating the first arithmetic average (P12+ P13)/2) of the remaining first pressure values P12, P13, and when the values of the three second pressure values P21, P22, P23 are all in the range of [ P-S £, P + S ], i.e., the values of P21, P22, P23 are considered to be true pressures, in this case, the second intermediate pressure value of the three second pressure values P21, P22 may be selected, for example, P22 < P22, and the second intermediate pressure value P22 is P22+ 22)/P22 ((P22).
Optionally, in some embodiments of the present disclosure, the pressure value determining unit 132 is further configured to select a first intermediate pressure value of the plurality of first pressure values as a target first pressure value when the plurality of first pressure values are all within the first preset pressure value range; and when at least one second pressure value in the plurality of second pressure values is not in the second preset pressure value range, removing the at least one second pressure value to obtain a residual second pressure value as a target second pressure value. The material bed height calculating unit 133 is further configured to calculate a second arithmetic mean of the remaining second pressure values, calculate a difference between the second arithmetic mean and the first intermediate pressure value, and determine a material bed height based on the difference and a pressure drop per meter of the material bed.
Specifically, as an example, when the three first pressure values P11, P12, and P13 are all within the range of [ P-S £ + Hmax/P, P + S £ + Hmax/P ], the values of P11, P12, and P13 are considered to be real pressures, at this time, a first intermediate pressure value of the three first pressure values P11, P12, and P13 may be selected, for example, P11 < P12 < P13, and the first intermediate pressure value is P12, that is, the target first pressure value.
And when any one of the three second pressure values P21, P22 and P23 is not in the range of [ P-S £ and P + S £ ], if the P21 is not in the range, removing the P21 to obtain residual second pressure values P22 and P23, and calculating a second arithmetic average value (P22+ P23)/2 of the P22 and P23, namely the target second pressure value, wherein the material layer height H is (P12- (P22+ P23)/2)/P.
In other embodiments of the present disclosure, the pressure value determining unit 132 is further configured to calculate a third arithmetic average value of a plurality of the first pressure values as a target first pressure value when the plurality of the first pressure values are all within the first preset pressure value range; when the plurality of second pressure values are all in the second preset pressure value range, calculating a fourth arithmetic mean value of the plurality of second pressure values as a target second pressure value. The material bed height calculating unit 133 is further configured to calculate a difference between the third arithmetic mean and the fourth arithmetic mean, and determine the material bed height based on the difference and the pressure drop per meter of the material bed.
Specifically, as an example, when P11, P12, and P13 are all in the range of [ P-S £ + Hmax/P, P + S £ + Hmax/P ], the third arithmetic mean value (P11+ P12+ P13)/3 of P11, P12, and P13 is calculated as the target first pressure value. When the values of P21, P22 and P23 are all in the range of [ P-S £ and P + S £ and the fourth arithmetic mean value (P21+ P22+ P23)/3 of P21, P22 and P23 is calculated as a target second pressure value, and at the moment, the material layer height H ═ ((P11+ P12+ P13)/3- (P21+ P22+ P23)/3)/P.
Optionally, in some embodiments of the present disclosure, the pressure value determining unit 132 is further configured to, when at least one first pressure value in the plurality of first pressure values is not within the first preset pressure value range, remove the at least one first pressure value to obtain a remaining first pressure value as a target first pressure value; when the plurality of second pressure values are all in the second preset pressure value range, calculating a fourth arithmetic mean value of the plurality of second pressure values as a target second pressure value. The material layer height calculating unit 133 is further configured to calculate a fifth arithmetic mean of the remaining first pressure value, calculate a difference between the fifth arithmetic mean and the fourth arithmetic mean, and determine a material layer height based on the difference and a pressure drop per meter of the material layer.
Specifically, as an example, when any one of P11, P12, P13 is not in the range of [ P-S £ + Hmax/P, P + S £ + Hmax/P ], assuming that P11 is not present, the fifth arithmetic average P12+ P13)/2 of the remaining P12, P13 is calculated as the target first pressure value. The values of P21, P22 and P23 are all in the range of [ P-S £ and P + S £ and the fourth arithmetic average value of P21, P22 and P23 is (P21+ P22+ P23)/3, namely the target second pressure value, and at the moment, the material layer height H ═ ((P12+ P13)/2- (P21+ P22+ P23)/3)/P.
Optionally, on the basis of the foregoing embodiment, the pressure value determining unit 132 is further configured to calculate a third arithmetic average value of a plurality of first pressure values as a target first pressure value when the plurality of first pressure values are all within a first preset pressure value range; and when at least one second pressure value in the plurality of second pressure values is not in the second preset pressure value range, removing the at least one second pressure value to obtain a residual second pressure value as a target second pressure value. The material bed height calculating unit 133 is further configured to calculate a sixth arithmetic mean of the remaining second pressure values, calculate a difference between the sixth arithmetic mean and the third arithmetic mean, and determine the material bed height based on the difference and the pressure drop per meter of the material bed.
Specifically, for example, P11, P12 and P13 are all in the range of [ P-S £ Hmax/P, P + S £ + Hmax/P ], and the third arithmetic mean value of P11, P12 and P13 is (P11+ P12+ P13)/3, namely the target first pressure value. When any one of P21, P22 and P23 is not in the range of [ P-S £ and P + S £ ], if P22 is not in the range, the sixth arithmetic average value (P21+ P23)/2 of the residual P21 and P23 is calculated to be the target second pressure value, and at the moment, the material layer height H ═ ((P11+ P12+ P13)/3- (P21+ P23)/2)/P.
Optionally, in some embodiments of the present disclosure, the pressure value determining unit 132 is further configured to, when at least one first pressure value in the plurality of first pressure values is not within the first preset pressure value range, remove the at least one first pressure value to obtain a remaining first pressure value as a target first pressure value; and when at least one second pressure value in the plurality of second pressure values is not in the second preset pressure value range, removing the at least one second pressure value to obtain a residual second pressure value as a target second pressure value. The material bed height calculating unit 133 is further configured to calculate a fifth arithmetic mean of the remaining first pressure values, calculate a sixth arithmetic mean of the remaining second pressure values, calculate a difference between the fifth arithmetic mean and the sixth arithmetic mean, and determine the material bed height based on the difference and the pressure drop per meter of the material bed.
Specifically, as an example, when any one of P11, P12, and P13 is not in the range of [ P-S £ + Hmax/P, P + S £ + Hmax/P ], assuming that P13 is not in the range, the fifth arithmetic average P11+ P12)/2 of the remaining P11 and P12 is calculated, i.e., the target first pressure value, and any one of P21, P22, and P23 is not in the range of [ P-S £, P + S £ ], assuming that P22 is not in the range, the sixth arithmetic average (P21+ P23)/2 of the remaining P21 and P23 is calculated, i.e., the target second pressure value, when the height H ═ H ((P11+ P12)/2- (P21+ P23)/P/P2).
In each of the above-mentioned embodiments of this disclosure, through predetermineeing reasonable pressure value scope, judge whether measured different pressure values are after predetermineeing reasonable pressure value scope, utilize the pressure value that meets the requirements to calculate the bed of material height, so can reduce because pipeline and/or pressure gauge block, sweep the mistake that pressure fluctuation, measuring error etc. arouse, improve the accuracy and the authenticity that the bed of material height calculated, can realize the accurate bed of material height that shows for a long time.
Optionally, in some embodiments of the present disclosure, as shown in fig. 3, each of the first pressure tap assemblies 101 may include a first pressure tapping pipe 111 and a first pressure gauge 112. The first pressure sampling pipe 111 is a hollow structure, and one end of the first pressure sampling pipe 111 is communicated with the furnace wall of the dense phase zone of the gasification furnace 10. The first pressure gauge 112 is connected to the other end of the first pressure sampling tube 111 and is connected to the processing unit 103. The first pressure gauge 112 is mounted vertically upward when mounted specifically, so that measurement errors can be avoided.
In some embodiments of the present disclosure, each of the second pressure measuring assemblies 102 includes a second pressure sampling pipe 121 and a second pressure gauge 122, the second pressure sampling pipe 121 is also a hollow structure, one end of the second pressure sampling pipe 121 is communicatively disposed on a furnace wall of the dilute phase region of the gasification furnace 10, and the second pressure gauge 122 is connected to the other end of the second pressure sampling pipe 121 and connected to the processing unit 103.
Optionally, in some embodiments of the present disclosure, one end of each first pressure tapping pipe 111 extends into the furnace wall of the dense phase zone and is flush with the inner wall of the furnace wall, so that it can be ensured that the pressure tapping pipeline does not affect the fluidization state of the gasifier, thereby avoiding affecting the internal pressure distribution during the operation of the gasifier, and further improving the accuracy of the material bed height detection.
In some embodiments of the present disclosure, one end of the second pressure tapping pipe 121 extends into the furnace wall of the dilute phase region and is flush with the inner wall of the furnace wall, so that it can be ensured that the pressure tapping pipeline does not affect the fluidization state of the gasifier, the influence on the internal pressure distribution during the operation of the gasifier is avoided, and the accuracy of the material bed height detection is further improved.
Optionally, in some embodiments of the present disclosure, each of the first pressure tapping pipes 111 is disposed obliquely upward at a predetermined included angle with the furnace wall, and the predetermined included angle is an acute angle. Each second pressure sampling pipe 121 can also be obliquely and upwards arranged at a preset included angle with the furnace wall.
Specifically, the preset included angle may be an included angle between the central axis of the first pressure tapping pipe 111 and the furnace wall, and an included angle between the central axis of the second pressure tapping pipe 121 and the furnace wall, and the preset included angle may be a maximum value obtained by subtracting the stacking angle of the pulverized coal entering the gasification furnace and the stacking angle of the pulverized coal after the pulverized coal of the gasification furnace is completely combusted from 90 °.
For example, taking the currently used coal particle size of 5mm as an example, the stacking angle of the pulverized coal of the gasification furnace is generally 36-42 °, the stacking angle of the pulverized coal of the coal ash after being combusted according to the process is generally 40-46 °, and the value of the preset included angle may be 44 ° -90 ° -46 °.
Through above-mentioned embodiment, no matter whether the coal can burn the jam of taking pressure pipeline of taking precautions against of the complete homoenergetic furthest, take precautions against the deposition of coal ash and take pressure the pipeline to reduce the jam condition of coal ash to taking pressure the pipe, and then improve the accuracy that bed of material highly detected.
For the fluidized bed gasification furnace, the height of the material layer is reflected by the differential pressure, so a pressure taking point which can reflect the actual pressure of the gasification furnace must be found. In some embodiments of the present disclosure, a plurality of first pressure taking ports, for example, 3 pressure taking ports a11, a12, a13, are opened on a furnace wall of the dense phase zone of the gasification furnace 10, each of the first pressure taking ports is correspondingly connected to one of the first pressure taking pipes, for simplicity, only the pressure taking port a11 is correspondingly connected to the first pressure taking pipe 111 shown in fig. 3, the correspondingly connected first pressure taking pipes 111 are not shown at the remaining pressure taking ports a12, a13, and the plurality of first pressure taking ports are located at a horizontal plane of a distribution plate (not shown) of the gasification furnace 10 and are distributed at equal intervals along a circumferential direction of the distribution plate.
Specifically, the height of the material bed is usually calculated from the distribution plate, and this material level is taken as an initial zero value, so that the plurality of first pressure taking ports are located at the horizontal plane of the distribution plate of the gasification furnace in this embodiment, and are distributed at equal intervals along the circumferential direction of the distribution plate, so as to make the setting of the three pressure taking ports a11, a12 and a13 more reasonable, and simultaneously make the pressure measured by the first pressure gauge 112 be the pressure on the same plane, thereby reducing the indication error possibly generated in the measurement, and further improving the accuracy of detecting the height of the material bed as a whole.
Similarly, in some embodiments of the present disclosure, a plurality of second pressure taking ports, for example, 3 pressure taking ports a21, a22, a23, are opened on the furnace wall of the dilute phase zone of the gasifier, and each of the second pressure taking ports is correspondingly connected to one of the second pressure taking pipes. For simplicity, only the pressure tapping port a21 is shown in fig. 3 as being correspondingly connected to the second pressure tapping pipe 121, and the correspondingly connected second pressure tapping pipes 121 are not shown at the remaining pressure tapping ports a22 and a 23. The second pressure taking ports are located on the same horizontal plane, are distributed along the circumferential direction of the gasification furnace at equal intervals, such as pressure taking ports A21, A22 and A23, are distributed on the same horizontal plane at equal intervals, and are arranged at positions higher than the highest material level of the gasification furnace, such as pressure taking ports A21, A22 and A23.
In this embodiment, the plurality of second pressure taps are located the same horizontal plane as pressure taps A21, A22, A23, and equally spaced along gasifier circumference for the pressure that second pressure gauge 122 measured is the pressure on the same plane, reduces the indicating value error that probably produces in the measurement, and then improves the accuracy that bed height detected.
On the basis of the above embodiments, in some embodiments of the present disclosure, with continued reference to fig. 3, the detection apparatus may further include a purge device 203 and a plurality of purge pipes (201, 202), the number of the purge pipes is the same as the sum of the numbers of the first pressure sampling pipe 111 and the second pressure sampling pipe 121, and for simplifying the description, only two purge pipes (201, 202) corresponding to one first pressure sampling pipe 111 and one second pressure sampling pipe 121 are shown in fig. 3. The other end of each first pressure sampling pipe 111 is connected with one purging pipe 201, and the other end of each second pressure sampling pipe 121 is connected with one purging pipe 202. The purging device 203 is connected to the plurality of purging pipes (201, 202), respectively, and the purging pressure when the purging device 203 is operated is greater than the maximum pressure when the gasification furnace 10 is operated.
In one example, six pressure sampling pipes obliquely and upwards arranged in the dilute phase zone and the dense phase zone are connected with equal-diameter tees (not shown) at one ends of the six pressure sampling pipes respectively protruding out of the outer wall of the gasification furnace, and pressure measuring devices with valves, such as pressure gauges (121 and 122) and purging pipes (201 and 202), are respectively connected with the other two ports of each equal-diameter tee. In some examples, the internal diameters of the six equal-diameter tee joints are the same, so that the phenomenon that the flow speed changes due to different internal diameters influences the indicating value of a pressure measuring device such as a pressure gauge is avoided, and the accuracy of material layer height detection can be improved.
Illustratively, the purging device 203 provides a purging medium that must be above the maximum pressure at which the gasifier 10 operates, and the purpose of purging is to prevent small particles of coal or ash in the fluidized bed gasifier from entering the pressure tapping line or pressure gauge, such as a manometer, and thereby causing failure to display normal pressure.
The requirement of the purging medium of the purging source is that the purging medium can only be used for purging, but can not react with the medium of the gasification furnace to influence the reaction of the gasification furnace, and simultaneously, the purging medium can not be added to block and corrode a pressure-taking pipeline, a valve and a pressure gauge below and the like. For the fluidized bed gasification furnace, the purging medium may be clean nitrogen or generated syngas, etc., as long as the aforementioned requirements are met, which can be referred to the prior art and will not be described herein. Adopt one to sweep equipment 203 as sweeping the source in this implementation, can save equipment cost, reduce the pressure pipe and/or manometer and like the jam of pressure gauge, can avoid sweeping the influence of gas fluctuation to measuring pressure simultaneously, and then improve the accuracy that the bed of material highly detected.
In some embodiments of the present disclosure, a stop valve 206 and a check valve 204 are sequentially disposed on each purge pipe (201, 202) along a direction from the purge device 203 to the pressure tapping pipe (111, 121).
In this embodiment, set up stop valve 206 and check valve 204, can guarantee that the medium that sweeps must be along the direction entering gasifier 10 of stop valve 206, check valve 204, also avoid simultaneously that the ash content after the gasifier 10 burning falls into the pressure extraction pipe and causes the jam of pipeline, and then improve the accuracy that the bed of material highly detected.
In some embodiments of the present disclosure, as shown in fig. 4, each of the purge pipes (201, 202) is further provided with a constant flow valve 205, and the constant flow valve 205 is located between the stop valve 206 and the check valve 204.
In this embodiment, the constant flow valve 205 is further provided, so that the purging flow rate when the purging pipe passes through the purging source is constant under the condition that the pressure of the purging source is stable, interference caused by purging flow rate fluctuation is avoided, and the accuracy of material bed height detection is further improved.
When the fluidized bed gasification furnace of the embodiment of the disclosure is started, before the gasification furnace 10 is ignited, the purging pressure of the purging device 203 is adjusted to make the purging pressure be larger than the highest pressure of the operation of the gasification furnace, then the stop valve 206 on the purging pipe is opened to make the purging medium such as nitrogen stably and uniformly blown into the gasification furnace, and then the valves under the pressure gauges (112, 122) are opened to make the pressure measuring components start to work. After the purging pressure is adjusted, the equipment on the purging pipe is not moved during the operation of the gasification furnace until the gasification furnace is stopped and the medium in the gasification furnace is cleaned. After the medium in the gasification furnace is cleaned, the valves on the purging pipe can be closed, and of course, the valves can be not closed.
In some embodiments of the present disclosure, the inner diameter of each of the first pressure tapping pipes 111 is the same, and/or the inner diameter of each of the second pressure tapping pipes 121 is the same, and/or the inner diameter of each of the purge pipes (201, 202) is the same. Each pressure pipe and the internal diameter such as purge pipe in this embodiment can avoid like this to cause the velocity of flow to change because of the internal diameter is different and influence pressure measuring device like the indicating value of pressure gauge to can improve the accuracy that bed of material height detected.
In some embodiments of the present disclosure, the distance of the purge device 203 to the purge path of each of the first pressure gauges 112 and the distance to the purge path of each of the second pressure gauges 122 are the same.
Specifically, in the embodiment of the present disclosure, for example, six purge pipes in the dense phase region and the dilute phase region of the gasification furnace 10 are connected to the same purge source, i.e., the purge device 203, and the distances between the purge source and the purge pipes of the six pressure gauges are equal, so that the influence of possible fluctuation of the pressure of the purge source can be counteracted to the greatest extent, and even if the pressure of the purge source slightly fluctuates, the pressure of the purge source can be simultaneously reflected to the six pressure gauges. Therefore, the influence of interference factors can be reduced, and the accuracy of material layer height detection is improved.
To sum up, this fluidized bed gasifier bed of material detection device of embodiment of this disclosure, through predetermineeing reasonable pressure range, judge whether different pressure values are after predetermineeing reasonable pressure range, utilize the pressure value that meets the requirements to calculate the bed of material height, reduce because pipeline and/or pressure gauge block, sweep the pressure fluctuation, pressure gauge problem such as the pressure error that error etc. arouse, improve the accuracy and the authenticity that the bed of material height calculated, can realize the accurate bed of material height that shows for a long time.
Simultaneously, compare in current a high pressure value of only surveying, a plurality of pressure values of same altitude measurement in the scheme of this embodiment, avoid getting to press pipe and/or pressure gauge to be blockked up, or a manometer leads to the unable condition of normally judging the bed of material height after having the problem, can realize continuous longer time's accurate monitoring, reduce pipeline and/or pressure gauge jam, the manometer has the influence that the problem etc. caused, also can reduce maintenance and maintenance volume.
The embodiment of the disclosure provides a fluidized bed gasification furnace, which comprises the fluidized bed gasification furnace material layer detection device in any one of the embodiments. For the specific content of the fluidized bed gasification furnace material layer detection device, reference may be made to the detailed description in the foregoing embodiments, which are not repeated herein. The technical effects brought by the fluidized bed gasifier refer to the technical effects of the fluidized bed gasifier material layer detection device, and are not repeated here.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, this division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units. The components shown as modules or units may or may not be physical units, i.e. may be located in one place or may also be distributed over a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the wood-disclosed scheme. One of ordinary skill in the art can understand and implement it without inventive effort.
In this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. The utility model provides a fluidized bed gasifier bed of material detection device which characterized in that includes:
the first pressure measuring components are arranged on the furnace wall of the gasification furnace concentrated phase zone and used for measuring to obtain a plurality of first pressure values;
the second pressure measuring components are arranged on the furnace wall of the dilute phase zone of the gasification furnace and used for measuring to obtain a plurality of second pressure values;
the processing unit is respectively connected with the first pressure measuring assembly and the second pressure measuring assembly and used for executing the following operations:
determining a target first pressure value and a target second pressure value which meet a preset pressure value condition in the plurality of first pressure values and the plurality of second pressure values;
and determining the height of the material layer in the gasification furnace based on the pressure drop of each material layer meter, the target first pressure value and the target second pressure value.
2. The gasifier bed detection apparatus of claim 1, wherein the processing unit comprises:
the pressure range configuration unit is used for configuring the preset pressure value conditions, and the preset pressure value conditions comprise a first preset pressure value range and a second preset pressure value range;
the pressure value determining unit is used for selecting a first middle pressure value in the first pressure values as a target first pressure value when the first pressure values are all in the first preset pressure value range; when the plurality of second pressure values are within the second preset pressure value range, selecting a second middle pressure value in the plurality of second pressure values as a target second pressure value;
and the material layer height calculating unit is used for calculating the difference value between the first intermediate pressure value and the second intermediate pressure value and determining the material layer height based on the difference value and the pressure drop of each meter of the material layer.
3. The gasifier layer detection apparatus according to claim 2,
the pressure value determination unit is further configured to: when at least one first pressure value in the first pressure values is not within the first preset pressure value range, removing the at least one first pressure value to obtain a residual first pressure value serving as a target first pressure value;
when the plurality of second pressure values are within the second preset pressure value range, selecting a second middle pressure value in the plurality of second pressure values as a target second pressure value;
the material layer height calculating unit is further used for:
calculating a first arithmetic mean value of the residual first pressure value, calculating a difference value between the first arithmetic mean value and the second intermediate pressure value, and determining the height of the material layer based on the difference value and the pressure drop of each meter of the material layer;
or, the pressure value determination unit is further configured to:
when the plurality of first pressure values are all in the first preset pressure value range, selecting a first middle pressure value in the plurality of first pressure values as a target first pressure value;
when at least one second pressure value in the plurality of second pressure values is not within the second preset pressure value range, removing the at least one second pressure value to obtain a residual second pressure value serving as a target second pressure value;
the material layer height calculating unit is further used for:
and calculating a second arithmetic mean value of the residual second pressure value, calculating a difference value between the second arithmetic mean value and the first intermediate pressure value, and determining the height of the material layer based on the difference value and the pressure drop of each meter of the material layer.
4. The gasifier layer detection apparatus according to claim 2,
the pressure value determination unit is further configured to:
when the first pressure values are all in the first preset pressure value range, calculating a third arithmetic mean value of the first pressure values as a target first pressure value;
when the plurality of second pressure values are all in the second preset pressure value range, calculating a fourth arithmetic mean value of the plurality of second pressure values as a target second pressure value;
the material layer height calculating unit is further used for:
calculating the difference between the third arithmetic mean and the fourth arithmetic mean, and determining the height of the material bed based on the difference and the pressure drop per meter of the material bed.
5. The gasifier layer detection apparatus according to claim 2,
the pressure value determination unit is further configured to:
when at least one first pressure value in the first pressure values is not within the first preset pressure value range, removing the at least one first pressure value to obtain a residual first pressure value serving as a target first pressure value;
when the plurality of second pressure values are all in the second preset pressure value range, calculating a fourth arithmetic mean value of the plurality of second pressure values as a target second pressure value;
the material layer height calculating unit is further used for:
calculating a fifth arithmetic mean value of the residual first pressure value, calculating a difference value of the fifth arithmetic mean value and the fourth arithmetic mean value, and determining the height of the material layer based on the difference value and the pressure drop of each meter of the material layer;
or, the pressure value determination unit is further configured to:
when the first pressure values are all in a first preset pressure value range, calculating a third arithmetic mean value of the first pressure values as a target first pressure value;
when at least one second pressure value in the plurality of second pressure values is not within the second preset pressure value range, removing the at least one second pressure value to obtain a residual second pressure value serving as a target second pressure value;
the material layer height calculating unit is further used for:
calculating a sixth arithmetic mean of the remaining second pressure values, calculating a difference between the sixth arithmetic mean and the third arithmetic mean, and determining the height of the material bed on the basis of the difference and the pressure drop per meter of the material bed;
or, the pressure value determination unit is further configured to:
when at least one first pressure value in the first pressure values is not within the first preset pressure value range, removing the at least one first pressure value to obtain a residual first pressure value serving as a target first pressure value;
when at least one second pressure value in the plurality of second pressure values is not within the second preset pressure value range, removing the at least one second pressure value to obtain a residual second pressure value serving as a target second pressure value;
the material layer height calculating unit is further used for:
calculating a fifth arithmetic mean value of the residual first pressure value, calculating a sixth arithmetic mean value of the residual second pressure value, calculating a difference value of the fifth arithmetic mean value and the sixth arithmetic mean value, and determining the height of the material layer based on the difference value and the pressure drop of each meter of the material layer.
6. The gasifier bed detection device as claimed in any one of claims 1 to 5, wherein each of the first pressure measurement assemblies comprises:
one end of the first pressure sampling pipe is communicated with and arranged on the furnace wall of the gasification furnace dense-phase zone;
the first pressure gauge is connected with the other end of the first pressure sampling pipe and connected with the processing unit;
and/or each second load cell assembly comprises:
one end of the second pressure taking pipe is communicated and arranged on the furnace wall of the dilute phase zone of the gasification furnace;
and the second pressure gauge is connected with the other end of the second pressure sampling pipe and is connected with the processing unit.
7. The gasifier layer detection apparatus as claimed in claim 6,
one end of each first pressure sampling pipe extends into the furnace wall of the concentrated phase region and is flush with the inner wall of the furnace wall; and/or each first pressure sampling pipe and the furnace wall are arranged in an inclined and upward manner at a preset included angle, and the preset included angle is an acute angle; and/or the presence of a gas in the gas,
one end of each second pressure sampling pipe extends into the furnace wall of the dilute phase zone and is flush with the inner wall of the furnace wall; and/or the presence of a gas in the gas,
each second pressure sampling pipe and the furnace wall are arranged in an inclined mode at the preset included angle.
8. The gasifier material layer detection device as claimed in claim 7, wherein a plurality of first pressure sampling ports are formed in a furnace wall of the gasifier dense-phase zone, and each first pressure sampling port is correspondingly connected with one first pressure sampling pipe;
the first pressure taking ports are positioned on the horizontal plane of a distribution plate of the gasification furnace and are distributed at equal intervals along the circumferential direction of the distribution plate;
and/or a plurality of second pressure taking ports are formed in the furnace wall of the dilute phase zone of the gasification furnace, and each second pressure taking port is correspondingly connected with one second pressure taking pipe;
the second pressure taking ports are located on the same horizontal plane and distributed at equal intervals along the circumferential direction of the gasification furnace, and the second pressure taking ports are arranged at positions higher than the highest material level of the gasification furnace.
9. The gasifier bed detection device of claim 6, further comprising:
the number of the purging pipes is the same as the sum of the number of the first pressure sampling pipes and the number of the second pressure sampling pipes, the other end of each first pressure sampling pipe is connected with one purging pipe, and the other end of each second pressure sampling pipe is connected with one purging pipe;
and the purging equipment is respectively connected with the purging pipes, and the purging pressure of the purging equipment during working is greater than the maximum pressure of the gasification furnace during running.
10. The gasifier bed detection device as claimed in claim 9, wherein the inside diameter of each first pressure sampling pipe is the same; and/or the inner diameter of each second pressure sampling pipe is the same; and/or the inner diameter of each of the purge tubes is the same.
11. The gasifier layer detection apparatus as claimed in claim 10, wherein the distance from the purge device to the purge path of each of the first pressure gauges and the distance from the purge path of each of the second pressure gauges are the same.
12. A fluidized bed gasification furnace comprising the fluidized bed gasification furnace material layer detection device according to any one of claims 1 to 11.
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