Modular equipment using solid waste catalytic pyrolysis to prepare high-value fuel gas

Abstract

The invention discloses modular equipment using solid waste catalytic pyrolysis to prepare high-value fuel gas. The equipment comprises a control module, a preprocessing module, a pyrolysis module, a secondary catalyzing module, a condensation module, a purification and absorption module, a liquid collecting module and a gas collecting module. The equipment has the advantages that corresponding modules are started and selected to work according the properties of to-be-processed materials and processing requirements, the control module is used to control the whole system, reaction device temperature, gas pressure and flow speed, multistage cooling system temperature, absorption liquid flow speed and reflux ratio, and the like are regulated to the required temperature, pressure and flow speed range, uniform heat transfer and mass transfer are achieved, gas and liquid products are stored in corresponding storage modules, and the high-value fuel gas is prepared through solid waste catalytic pyrolysis; the equipment using touch-screen operation is capable of dynamically displaying parameters such as temperature, pressure, flow speed and time, high in automation and intelligent level, simple and convenient in man-machine communication, capable of modularly designing and combining production processes according to the properties and processing degree of raw materials and product quality requirements, and efficiency and economy of a solid waste treatment process are increased.

Description

technical field

[0001] The invention belongs to the field of biochemical industry, in particular to a modular equipment for preparing high-value gas by catalytic pyrolysis of solid waste. Background technique

[0002] In recent years, with the rapid development of the economy, organic waste such as domestic waste, kitchen waste and sludge has shown a linear growth trend. On the other hand, with the depletion of fossil energy and the increasing air pollution, including walnuts Nut shells such as shells, coconut shells, almond shells, corn stalks, wheat straws, barley straws, rice straws, corncobs, bagasse, switchgrass, miscanthus, branches, wood chips and weeds, rice husks and other agricultural and forestry wastes. , Resource utilization has received unprecedented attention. At present, these solid wastes are usually disposed of by landfill, incineration, and composting. However, in addition to direct landfilling, in addition to producing a large amount of odor, high-concen...

Examples

Embodiment 1

[0029] Modular solid waste catalytic pyrolysis equipment for processing 1kg of corn stalks.

[0030] as attached figure 1 , the solid-liquid ratio is 40% (m / v) The material is first placed in the pretreatment module 2, and the microwave pretreatment method is selected, the microwave power is 4KW, the reaction time is 10min, and then dehydrated and dried to control the water content to 95%, and then placed In the pyrolysis module 3, turn on the dual temperature control mode, the catalyst placed last time is 50g, the active component is nickel nitrate, the loading capacity is 5%, the carrier is alumina, the temperature is 700°C; the pyrolysis temperature of the lower layer is 500°C , the valve reflux ratio is 2:8, after the pyrolysis gas passes through the condensation module 5, it enters the purification module 6, and the purification is sprayed with 1% NaOH solution, the spray flow rate is 10ml / min, and the absorption liquid reflux ratio is 4:6 , the gas after the three-stage...

Embodiment 2

[0033] Modular solid waste catalytic pyrolysis equipment for processing 0.8kg of kitchen waste.

[0034] as attached figure 1, adjust the solid-liquid ratio to 20% (m / v) The material is first placed in the pretreatment module 2, adopts the hydrothermal pretreatment method, treats at 200°C for 100 minutes, and then dehydrates and dries to control the water content to 90%, and then places it in the hot water Decomposition module 3, open the single temperature control mode, the pyrolysis temperature is 600 ℃, the crude decomposition gas enters the secondary catalytic module 4 through the reflux ratio of 4:6, this module is divided into 3 levels, from bottom to top in order of porcelain stone primary Absorption, zeolite absorption, monolithic catalyst, the active component of the catalyst is spinel iron oxide, and the catalytic temperature is 700°C. After catalysis, the gas enters the purification module 6 through the condensation module 5, and the purification is sprayed with 1% ...

Embodiment 3

[0037] Modular solid waste catalytic pyrolysis equipment for processing 2kg of municipal sludge.

[0038] as attached figure 1 , adjust the solid-liquid ratio to 30% (m / v) The material is first placed in the pretreatment module 2, adopts the hydrothermal pretreatment method, treats at 220°C for 60 minutes, and then dehydrates and dries to control the water content to 90%, and then places it in the hot water Solution module 3, open the dual temperature control mode, the catalyst placed last time is 80g, the active component is nickel phosphotungstate, the loading capacity is 10%, the carrier is molecular sieve, the temperature is 800°C; the pyrolysis temperature of the lower layer is 600°C, the valve The reflux ratio is 3:7, and it enters the secondary catalytic module 4. This module is divided into 3 levels, from bottom to top, it is porcelain stone primary absorption, zeolite absorption, and monolithic catalyst. The active component of the catalyst is spinel iron oxide , the...

technical field

[0001] The invention belongs to the field of biochemical industry, in particular to a modular equipment for preparing high-value gas by catalytic pyrolysis of solid waste. Background technique

[0002] In recent years, with the rapid development of the economy, organic waste such as domestic waste, kitchen waste and sludge has shown a linear growth trend. On the other hand, with the depletion of fossil energy and the increasing air pollution, including walnuts Nut shells such as shells, coconut shells, almond shells, corn stalks, wheat straws, barley straws, rice straws, corncobs, bagasse, switchgrass, miscanthus, branches, wood chips and weeds, rice husks and other agricultural and forestry wastes. , Resource utilization has received unprecedented attention. At present, these solid wastes are usually disposed of by landfill, incineration, and composting. However, in addition to direct landfilling, in addition to producing a large amount of odor, high-concen...

Examples

Embodiment 1

[0029] Modular solid waste catalytic pyrolysis equipment for processing 1kg of corn stalks.

[0030] as attached figure 1 , the solid-liquid ratio is 40% (m / v) The material is first placed in the pretreatment module 2, and the microwave pretreatment method is selected, the microwave power is 4KW, the reaction time is 10min, and then dehydrated and dried to control the water content to 95%, and then placed In the pyrolysis module 3, turn on the dual temperature control mode, the catalyst placed last time is 50g, the active component is nickel nitrate, the loading capacity is 5%, the carrier is alumina, the temperature is 700°C; the pyrolysis temperature of the lower layer is 500°C , the valve reflux ratio is 2:8, after the pyrolysis gas passes through the condensation module 5, it enters the purification module 6, and the purification is sprayed with 1% NaOH solution, the spray flow rate is 10ml / min, and the absorption liquid reflux ratio is 4:6 , the gas after the three-stage...

Embodiment 2

[0033] Modular solid waste catalytic pyrolysis equipment for processing 0.8kg of kitchen waste.

[0034] as attached figure 1, adjust the solid-liquid ratio to 20% (m / v) The material is first placed in the pretreatment module 2, adopts the hydrothermal pretreatment method, treats at 200°C for 100 minutes, and then dehydrates and dries to control the water content to 90%, and then places it in the hot water Decomposition module 3, open the single temperature control mode, the pyrolysis temperature is 600 ℃, the crude decomposition gas enters the secondary catalytic module 4 through the reflux ratio of 4:6, this module is divided into 3 levels, from bottom to top in order of porcelain stone primary Absorption, zeolite absorption, monolithic catalyst, the active component of the catalyst is spinel iron oxide, and the catalytic temperature is 700°C. After catalysis, the gas enters the purification module 6 through the condensation module 5, and the purification is sprayed with 1% ...

Embodiment 3

[0037] Modular solid waste catalytic pyrolysis equipment for processing 2kg of municipal sludge.

[0038] as attached figure 1 , adjust the solid-liquid ratio to 30% (m / v) The material is first placed in the pretreatment module 2, adopts the hydrothermal pretreatment method, treats at 220°C for 60 minutes, and then dehydrates and dries to control the water content to 90%, and then places it in the hot water Solution module 3, open the dual temperature control mode, the catalyst placed last time is 80g, the active component is nickel phosphotungstate, the loading capacity is 10%, the carrier is molecular sieve, the temperature is 800°C; the pyrolysis temperature of the lower layer is 600°C, the valve The reflux ratio is 3:7, and it enters the secondary catalytic module 4. This module is divided into 3 levels, from bottom to top, it is porcelain stone primary absorption, zeolite absorption, and monolithic catalyst. The active component of the catalyst is spinel iron oxide , the...

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