A wood-based board production installation with (a) a formaldehyde absorption unit for dissolving gaseous formaldehyde so that formaldehyde solution is formed, (b) a wood particle production device for producing a wood particles, (c) wherein the wood particle production device comprises a wood particle dryer, (d) wherein the formaldehyde absorption unit features a heat exchanger for decoupling thermal energy, wherein decoupling refers to an extraction of thermal energy for subsequent use, and (e) the wood particle dryer is designed to dry wood particles by means of the decoupled thermal energy, (f) wherein the formaldehyde absorption unit comprises (i) an absorption vessel, (ii) an introduction line for introducing formaldehyde into the absorption vessel, and (iii) a first recirculation circuit which has - a first extraction point for extracting formaldehyde solution from the absorption vessel, - a first feed point for feeding formaldehyde solution into the absorption vessel, - a heat exchanger and - a first pump for conveying the formaldehyde solution from the first extraction point through the heat exchanger to the first feed point, and (iv) is designed to dissipate at least 50% of an absorption heat that is generated when the gaseous formaldehyde is dissolved, characterised in that (g) the formaldehyde absorption unit has (i) at least a second recirculation circuit, which has - a second extraction point for extracting formaldehyde solution from the absorption vessel, - a second feed point for feeding formaldehyde solution into the absorption vessel, and - a second pump for conveying the formaldehyde solution from the second extraction point through the heat exchanger to the second feed point, and (ii) is designed to dissipate at most 15% of the absorption heat and/or works at a second temperature level that is below a first temperature level of the first recirculation circuit. (a) a formaldehyde absorption unit for dissolving gaseous formaldehyde so that formaldehyde solution is formed, (b) a wood particle production device for producing a wood particles, (c) wherein the wood particle production device comprises a wood particle dryer, (d) wherein the formaldehyde absorption unit features a heat exchanger for decoupling thermal energy, wherein decoupling refers to an extraction of thermal energy for subsequent use, and (e) the wood particle dryer is designed to dry wood particles by means of the decoupled thermal energy, (f) wherein the formaldehyde absorption unit comprises (i) an absorption vessel, (ii) an introduction line for introducing formaldehyde into the absorption vessel, and (iii) a first recirculation circuit which has - a first extraction point for extracting formaldehyde solution from the absorption vessel, - a first feed point for feeding formaldehyde solution into the absorption vessel, - a heat exchanger and - a first pump for conveying the formaldehyde solution from the first extraction point through the heat exchanger to the first feed point, and (iv) is designed to dissipate at least 50% of an absorption heat that is generated when the gaseous formaldehyde is dissolved, characterised in that (i) an absorption vessel, (ii) an introduction line for introducing formaldehyde into the absorption vessel, and (iii) a first recirculation circuit which has - a first extraction point for extracting formaldehyde solution from the absorption vessel, - a first feed point for feeding formaldehyde solution into the absorption vessel, - a heat exchanger and - a first pump for conveying the formaldehyde solution from the first extraction point through the heat exchanger to the first feed point, and - a first extraction point for extracting formaldehyde solution from the absorption vessel, - a first feed point for feeding formaldehyde solution into the absorption vessel, - a heat exchanger and - a first pump for conveying the formaldehyde solution from the first extraction point through the heat exchanger to the first feed point, (iv) is designed to dissipate at least 50% of an absorption heat that is generated when the gaseous formaldehyde is dissolved, (g) the formaldehyde absorption unit has (i) at least a second recirculation circuit, which has - a second extraction point for extracting formaldehyde solution from the absorption vessel, - a second feed point for feeding formaldehyde solution into the absorption vessel, and - a second pump for conveying the formaldehyde solution from the second extraction point through the heat exchanger to the second feed point, and (ii) is designed to dissipate at most 15% of the absorption heat and/or works at a second temperature level that is below a first temperature level of the first recirculation circuit. (i) at least a second recirculation circuit, which has - a second extraction point for extracting formaldehyde solution from the absorption vessel, - a second feed point for feeding formaldehyde solution into the absorption vessel, and - a second pump for conveying the formaldehyde solution from the second extraction point through the heat exchanger to the second feed point, and - a second extraction point for extracting formaldehyde solution from the absorption vessel, - a second feed point for feeding formaldehyde solution into the absorption vessel, and - a second pump for conveying the formaldehyde solution from the second extraction point through the heat exchanger to the second feed point, and (ii) is designed to dissipate at most 15% of the absorption heat and/or works at a second temperature level that is below a first temperature level of the first recirculation circuit.